LS1/T56 installed! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

FirstGen · 07-09-2004, 05:16 PM

Ladies and gentlemen, it is finally in. I still have some motor mount issues with the vette headers to work out but it is VERY CLOSE. I can feel it now.

Next up is a custom shifter for the 6 speed, having my LS1 driveshaft lengthened and working in the hydraulic clutch linkage.

Almost, almost...

FirstGen · 07-09-2004, 05:18 PM

looks like it was meant to be there

**'70_402** · 07-09-2004, 05:32 PM

Sweeeeeet!!!!!! Was That A One Man Job??

toddtheodd · 07-09-2004, 05:35 PM

What does it take to get one of those transmissions hooked up behind a pre-86 350sbc? I want the 6 speed, but I don't want to have to deal with all the new "fang dangled" computer stuff on multi-port injected engines.
Todd

72bigblock4wd · 07-09-2004, 08:58 PM

That is cool. I haven't seen anyone else with an LS1 and a 6-speed yet. I'm going old school with a 454/th400 combo in my 67, but I'm sure yours will do a burnout just as well as mine!!!!

Blue85 · 07-09-2004, 09:02 PM

How well does the shifter line up?

FirstGen · 07-09-2004, 09:22 PM

Quote:

Originally Posted by 70'_402

Sweeeeeet!!!!!! Was That A One Man Job??

Yes Sir. I didn't want to give any of my buddies the test drive /helper award

haha

FirstGen · 07-09-2004, 09:25 PM

Quote:

Originally Posted by toddtheodd

What does it take to get one of those transmissions hooked up behind a pre-86 350sbc? I want the 6 speed, but I don't want to have to deal with all the new "fang dangled" computer stuff on multi-port injected engines.
Todd

The fuel injection stuff is the beauty of the monster IMHO. However you can hook up a T56 6 speed easily with a LT1 six speed tranny (93-97) F-Body if you are using an older block setup.

FirstGen · 07-09-2004, 09:28 PM

Quote:

Originally Posted by 72bigblock4wd

That is cool. I haven't seen anyone else with an LS1 and a 6-speed yet. I'm going old school with a 454/th400 combo in my 67, but I'm sure yours will do a burnout just as well as mine!!!!

I think it will. This motor makes 345 hp and 390 ft pds stock. Then I did a cam/springs and milled the heads alittle. Should around 400 horse and 500 torque...

FirstGen · 07-09-2004, 09:29 PM

Quote:

Originally Posted by Blue85

How well does the shifter line up?

Still working on that, will get pics up after I figure it all out.

Blue85 · 07-09-2004, 09:36 PM

koo

frost89434 · 07-09-2004, 11:15 PM

Looks like it's coming together

68LSS1 · 07-10-2004, 04:07 AM

About time someone else went with the 6 speed behind the LS1 swap. Looking good.

toddtheodd · 07-10-2004, 09:17 AM

I especially like the .49 final gear of the 6 speed (or is that only the six speed in the corvette?). With a final drive of .49 you can get away with 4.10's easily.

Curbstone Mech · 07-10-2004, 09:55 AM

I think there are a lot of us that would like to have this set up- myself included. There's nothing like rowing thru the gears with a nice sounding set of pipes, especially if you're a former "double clutchin fool from the motor pool" Keep us posted on the progress. luv those headers!

72C203503ONTHETREE · 07-10-2004, 10:02 AM

For all you guys(me included) who want a carb instead of messing with computers and wiring, there are now intakes available for LS1's that are for a four barrel carb. I think Chevy makes them now, I just saw it in a magazine somewhere. The LS1 makes a lot of power, I have had a 98 Z28 1LE and a 2000 Z28 and they were a blast, but they wont have the torque that a nicely built big block would have, but they will rev a lot quicker and higher.

67shortie · 07-10-2004, 11:13 AM

I love it, wish I had the money to pick up one of those combos and stick it in the truck.

Keep us updated on the progress please

**lock** · 07-10-2004, 11:13 AM

Firstgen, What did you end up doing for a gas tank/fuel pump?

FirstGen · 07-10-2004, 01:20 PM

It really wasn't that expensive of a swap. I paid $800 for the motor (ok I know it was a steal) and $1000 for the complete 6 speed and driveshaft, shifter, clutch etc. There is definatly ALOT of misc crap you have to do before it runs but it's under $1500. All in all I think it is just as cheap as any other build up. Figure that you will spend AT LEAST $2500 for a healthy SBC carbed and another $1000 for a good tranny and stall...

FirstGen · 07-10-2004, 01:30 PM

Quote:

Originally Posted by 72C203503ONTHETREE

For all you guys(me included) who want a carb instead of messing with computers and wiring, there are now intakes available for LS1's that are for a four barrel carb. I think Chevy makes them now, I just saw it in a magazine somewhere. The LS1 makes a lot of power, I have had a 98 Z28 1LE and a 2000 Z28 and they were a blast, but they wont have the torque that a nicely built big block would have, but they will rev a lot quicker and higher.

Keep in mind that there is no dizzy on the LS1 and no way to add one so you will have some fun with that. I have heard of carbed LT1's since they have a sort of mounted weird crank trigger/dizzy idea called optispark or (optipuke

).

For $350 several compaines on the net will modify and simplify the hook up of these wiring harnesses for you so that you can retain everything, fuel injection, self learning and calibrating mass air flow (no more swapping jets), 8 seperate coil packs (one for every cyclinder). These motors also have knock sensors right underneith the intake and automatically retard timing anytime detonation is sensed. That is only the begenning. Most of these motors were underrated from GM. The silverado SS guys have taken the trucks to the dyno with only a LS6 cam and put down 380 RWHP!!! This is with the front driveshaft removed of course. They are still slow because they weigh in the 7,000 pound range.

I just think it's cool

67shortie · 07-10-2004, 03:48 PM

Quote:

Originally Posted by FirstGen

I just think it's cool

I fully agree, when the truck gets running I will see what kind of shape the engine and trans are in and when I am ready a LS1 will be in the menu as an option. This year, the new LS2 comes out in the Vette' and offers 405 hp stock! The new Z-06 rumors to have 500. Damn.

shuttermutt · 07-10-2004, 03:57 PM

Quote:

Originally Posted by FirstGen

It really wasn't that expensive of a swap. I paid $800 for the motor (ok I know it was a steal) and $1000 for the complete 6 speed and driveshaft, shifter, clutch etc. There is definatly ALOT of misc crap you have to do before it runs but it's under $1500. All in all I think it is just as cheap as any other build up. Figure that you will spend AT LEAST $2500 for a healthy SBC carbed and another $1000 for a good tranny and stall...

That's a pretty good deal. Hell, I paid $900 for the fuel injected 454 that's going into the Chevelle. Now if I could just figure out how to put that 6-speed the old man has into the Chevelle without screwing up the console, I'd have it made!

72C203503ONTHETREE · 07-10-2004, 04:02 PM

You can get aftermarket ignition system that will work with the coil on plug ignition the LS1 has. Also, step up the power with a LS6 conversion kit to get over 400 hp. Its expensive, like $2,300, but you get the complete heads, intake, cam, rockers , gaskets, etc. to do the whole thing. Make sure you get a 00 up LS1. I know for sure that the 98 blocks can not be bored over but the later ones can. If you scuff a liner in the newer blocks it can be bored out and reused, the 98 blocks can't(this is in the F bodies, not sure about the 97-98 Vette blocks). The Chevy SS is a joke compared to the Lightning and even more compared to the SRT Ram, 500 hp 500 ft/pounds tprque with a real transmission, a manual six speed. Plus the Chevy is ugly in my opinion. The Lightning is supposedly going to be offered with more power and a manual trans also within a couple years from what I have heard. Wish Chevy would actually build something that would compete with those other two trucks.

72C203503ONTHETREE · 07-10-2004, 04:06 PM

I just looked at the pictures closer, that looks like a cast iron block with some rust starting. If thats a cast iron block its not the true LS1, its a LS1 design but with either 4.8, 5.3, or 6.0 liter displacement. The LS1 in the Vette and F bodies are all aluminum from top to bottom. It displaced 5.6 liters or 346 cubic inches. If you got the 6.0 you got a good engine though, you can put a stroker kit in them and make them huge and the cast iron block is stronger for the abuse a truck would give them.

FirstGen · 07-10-2004, 05:35 PM

yeah it's a gen iii LS1 motor. If you read the thread I said 6.0l LS1. Whatever LS6 kit you are looking at is a waste of money. They heads are almost identical to the basic LS1 but they do have .5 higher CR. For way less than that you can make over 400 horse (cam/springs and long tubes). The 4.8, 5.3, 5.7, 6.0 use almost identical heads (at least in design) the main difference is the CC, valve size, bore. The intakes swap over on all motors. so do the majority of the internals minus the pistons obviously. Even the cam specs in my 6.0 motor are the same as the 2001-2002 LS1. The valve train is identical. Not sure where you get 5.6 liter? It is actually 5669.9 CC which is rounds to 5.7.

So how does the aftermarket ignition get the trigger signal? I'm sure there is a aftermarket one available however the point being that it would be way more expensive than wiring the EFI up.

Check out Keiser engineering for a modified 6 speed tranny that will let you move the shifter location forward and use the stock consoul on your Chevelle. They sell the whole tranny package or you can have your modified for 699. ouch.

I'd have to agree that the SS is the slower of the bunch. However this is factored to the weight and AWD. The SRT 10 is a $h!tty truck for the money. They run 13.9's at the track with 500 horse??? The Lightnings run alot better and the SS being HALF the money runs slightly behind the SRT 10.

Sorry for the long post, I'm "at work" and being paid for typin on this BS forum.

Good luck,
Taylor

07-09-2004, 05:16 PM	#1
FirstGen Just Don't Stop! Join Date: Feb 2004 Location: Dallas Posts: 1,239	LS1/T56 installed! Ladies and gentlemen, it is finally in. I still have some motor mount issues with the vette headers to work out but it is VERY CLOSE. I can feel it now. Next up is a custom shifter for the 6 speed, having my LS1 driveshaft lengthened and working in the hydraulic clutch linkage. Almost, almost... Attached Images __________________ 1968 C10 build in process TT LSA/6L90e/9"

07-09-2004, 05:18 PM	#2
FirstGen Just Don't Stop! Join Date: Feb 2004 Location: Dallas Posts: 1,239	looks like it was meant to be there Attached Images __________________ 1968 C10 build in process TT LSA/6L90e/9"

07-09-2004, 05:32 PM	#3
'70_402 Senior Member Join Date: Dec 2003 Location: Pampa, Texas Posts: 1,554	Sweeeeeet!!!!!! Was That A One Man Job?? __________________ https://www.ebay.com/itm/295742064443

07-09-2004, 09:02 PM	#6
Blue85 Oilfield Trash Join Date: Sep 2003 Location: Raymore, Sk, Canada, Earth Posts: 3,171	How well does the shifter line up? __________________ 14 Dodge 3500 Mega Cab 08 Dodge 3500 Mega Cab 87 Chev 3+3 4x4 80 GMC K10 High Sierra bone stock 70 Chevelle 350SS long term project 68 GMC 3ton Grain Truck/Garbage wagon 50 Pontiac 2 Door Coupe Project "I've got a shotgun rifle and a 4 wheel drive and a country boy can survive" Hank Jr.

07-09-2004, 09:36 PM	#11
Blue85 Oilfield Trash Join Date: Sep 2003 Location: Raymore, Sk, Canada, Earth Posts: 3,171	koo __________________ 14 Dodge 3500 Mega Cab 08 Dodge 3500 Mega Cab 87 Chev 3+3 4x4 80 GMC K10 High Sierra bone stock 70 Chevelle 350SS long term project 68 GMC 3ton Grain Truck/Garbage wagon 50 Pontiac 2 Door Coupe Project "I've got a shotgun rifle and a 4 wheel drive and a country boy can survive" Hank Jr.

07-09-2004, 05:35 PM	#4
toddtheodd The oddest Todd around Join Date: May 2004 Location: Miami, Florida Posts: 1,418	What does it take to get one of those transmissions hooked up behind a pre-86 350sbc? I want the 6 speed, but I don't want to have to deal with all the new "fang dangled" computer stuff on multi-port injected engines. Todd

07-09-2004, 08:58 PM	#5
72bigblock4wd Registered User Join Date: Feb 2004 Location: Grand Rapids, Michigan Posts: 194	That is cool. I haven't seen anyone else with an LS1 and a 6-speed yet. I'm going old school with a 454/th400 combo in my 67, but I'm sure yours will do a burnout just as well as mine!!!!

07-09-2004, 11:15 PM	#12
frost89434 Registered User Join Date: Nov 2001 Location: sparks, NV Posts: 1,141	Looks like it's coming together __________________ 68 short fleet with 71 front clip 2wd jaguar blue 99 chevy ext cab shrtbed z71 loaded 99 chevy swb fleetside(daily driver) Sparks, Nevada

07-10-2004, 04:07 AM	#13
68LSS1 Registered User Join Date: Dec 2002 Location: Tampa Posts: 1,191	About time someone else went with the 6 speed behind the LS1 swap. Looking good. __________________ '68 Short Step LS1/T56, Hydratech, Fatman Fabrications Stage III, Baer, Hot Rods to Hell, US Body, S&W, etc

07-10-2004, 09:17 AM	#14
toddtheodd The oddest Todd around Join Date: May 2004 Location: Miami, Florida Posts: 1,418	I especially like the .49 final gear of the 6 speed (or is that only the six speed in the corvette?). With a final drive of .49 you can get away with 4.10's easily.

07-10-2004, 09:55 AM	#15
Curbstone Mech Active Member Join Date: Feb 2000 Location: Carroll County Maryland Posts: 300	I think there are a lot of us that would like to have this set up- myself included. There's nothing like rowing thru the gears with a nice sounding set of pipes, especially if you're a former "double clutchin fool from the motor pool" Keep us posted on the progress. luv those headers! __________________ 68 short fleet 383 stroker, 700r4 373:1 posi 72 GMC 3/4 ton- weekly driver 700r4 351;1 posi

07-10-2004, 10:02 AM	#16
72C203503ONTHETREE Registered User Join Date: Apr 2004 Location: Grant, Alabama Posts: 504	For all you guys(me included) who want a carb instead of messing with computers and wiring, there are now intakes available for LS1's that are for a four barrel carb. I think Chevy makes them now, I just saw it in a magazine somewhere. The LS1 makes a lot of power, I have had a 98 Z28 1LE and a 2000 Z28 and they were a blast, but they wont have the torque that a nicely built big block would have, but they will rev a lot quicker and higher. __________________ 72 Chevy C20, SOLD (Dang it.) 09 Challanger RT six speed in all black. 74 Datsun 710 wagon, all 1.8 liters of screaming Datsun power. 73 C10 long bed, 350/350 combo, nice shape.

07-10-2004, 11:13 AM	#17
67shortie Green club Join Date: May 2002 Location: Central CA Posts: 1,059	I love it, wish I had the money to pick up one of those combos and stick it in the truck. Keep us updated on the progress please __________________ 71 short/fleet ECE 4/6 drop, LQ4/700r4/3.42 gears 70 SS396 Chevelle 427/200-4R/3.73posi 61 Lincoln Continental, black on black Son you are going to drive me to drinkin if you don't stop drivin that hot rod lincoln

07-10-2004, 11:13 AM	#18
lock Insert funny comment. Join Date: Dec 1999 Location: Concord NC Posts: 621	Firstgen, What did you end up doing for a gas tank/fuel pump? __________________ ------------ - Mark -My Build Thread... -68 C10, LT1 - Undergoing Frame off resto -86 IROC-Z T72 turbo 355, M6 -70 Camaro http://www.iroc-ss.com Last edited by lock; 07-10-2004 at 02:09 PM.

07-10-2004, 01:20 PM	#19
FirstGen Just Don't Stop! Join Date: Feb 2004 Location: Dallas Posts: 1,239	It really wasn't that expensive of a swap. I paid $800 for the motor (ok I know it was a steal) and $1000 for the complete 6 speed and driveshaft, shifter, clutch etc. There is definatly ALOT of misc crap you have to do before it runs but it's under $1500. All in all I think it is just as cheap as any other build up. Figure that you will spend AT LEAST $2500 for a healthy SBC carbed and another $1000 for a good tranny and stall... __________________ 1968 C10 build in process TT LSA/6L90e/9"



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07-10-2004, 04:02 PM	#23
72C203503ONTHETREE Registered User Join Date: Apr 2004 Location: Grant, Alabama Posts: 504	You can get aftermarket ignition system that will work with the coil on plug ignition the LS1 has. Also, step up the power with a LS6 conversion kit to get over 400 hp. Its expensive, like $2,300, but you get the complete heads, intake, cam, rockers , gaskets, etc. to do the whole thing. Make sure you get a 00 up LS1. I know for sure that the 98 blocks can not be bored over but the later ones can. If you scuff a liner in the newer blocks it can be bored out and reused, the 98 blocks can't(this is in the F bodies, not sure about the 97-98 Vette blocks). The Chevy SS is a joke compared to the Lightning and even more compared to the SRT Ram, 500 hp 500 ft/pounds tprque with a real transmission, a manual six speed. Plus the Chevy is ugly in my opinion. The Lightning is supposedly going to be offered with more power and a manual trans also within a couple years from what I have heard. Wish Chevy would actually build something that would compete with those other two trucks. __________________ 72 Chevy C20, SOLD (Dang it.) 09 Challanger RT six speed in all black. 74 Datsun 710 wagon, all 1.8 liters of screaming Datsun power. 73 C10 long bed, 350/350 combo, nice shape.

07-10-2004, 04:06 PM	#24
72C203503ONTHETREE Registered User Join Date: Apr 2004 Location: Grant, Alabama Posts: 504	I just looked at the pictures closer, that looks like a cast iron block with some rust starting. If thats a cast iron block its not the true LS1, its a LS1 design but with either 4.8, 5.3, or 6.0 liter displacement. The LS1 in the Vette and F bodies are all aluminum from top to bottom. It displaced 5.6 liters or 346 cubic inches. If you got the 6.0 you got a good engine though, you can put a stroker kit in them and make them huge and the cast iron block is stronger for the abuse a truck would give them. __________________ 72 Chevy C20, SOLD (Dang it.) 09 Challanger RT six speed in all black. 74 Datsun 710 wagon, all 1.8 liters of screaming Datsun power. 73 C10 long bed, 350/350 combo, nice shape.

07-10-2004, 05:35 PM	#25
FirstGen Just Don't Stop! Join Date: Feb 2004 Location: Dallas Posts: 1,239	yeah it's a gen iii LS1 motor. If you read the thread I said 6.0l LS1. Whatever LS6 kit you are looking at is a waste of money. They heads are almost identical to the basic LS1 but they do have .5 higher CR. For way less than that you can make over 400 horse (cam/springs and long tubes). The 4.8, 5.3, 5.7, 6.0 use almost identical heads (at least in design) the main difference is the CC, valve size, bore. The intakes swap over on all motors. so do the majority of the internals minus the pistons obviously. Even the cam specs in my 6.0 motor are the same as the 2001-2002 LS1. The valve train is identical. Not sure where you get 5.6 liter? It is actually 5669.9 CC which is rounds to 5.7. So how does the aftermarket ignition get the trigger signal? I'm sure there is a aftermarket one available however the point being that it would be way more expensive than wiring the EFI up. Check out Keiser engineering for a modified 6 speed tranny that will let you move the shifter location forward and use the stock consoul on your Chevelle. They sell the whole tranny package or you can have your modified for 699. ouch. I'd have to agree that the SS is the slower of the bunch. However this is factored to the weight and AWD. The SRT 10 is a $h!tty truck for the money. They run 13.9's at the track with 500 horse??? The Lightnings run alot better and the SS being HALF the money runs slightly behind the SRT 10. Sorry for the long post, I'm "at work" and being paid for typin on this BS forum. Good luck, Taylor __________________ 1968 C10 build in process TT LSA/6L90e/9" Last edited by FirstGen; 07-11-2004 at 03:25 AM.

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