Another way to skin the cat; the High Torque 292 LS swap

[dayj1]

Originally Posted by ls1nova71

So just curious, but what ever happened to the gold '68?

I need to start a build thread on it. But, at this point, I've successfully disassembled and scattered a perfectly good running truck.

This is what it looked like after I mocked up the suspension and just before I tore it down to the frame.



And this is the current state of the new LQ4 in it now.

[ls1nova71]

Haha, I always second guess myself when I take a perfectly good running vehicle apart too! Looks killer though, the stance is right on!

[darkhorse970]

Originally Posted by smbrouss70

Every time this thread pops up, it makes me want to rip the 5.3/4l60e out of my old '99 that is just sitting there and drop it in the Blazer looking similar to this. Unfortunately, I have too much money wrapped up in a new SBC to abandon that course. I just love the look and functionality of this, maybe on the next one.

I agree, this thread REALLY makes me want to go this route with my '63!

[Jkmyers84]

I'm curious about keeping everything with the stock tank need pics reloaded!

[dayj1]

Originally Posted by Jkmyers84

I'm curious about keeping everything with the stock tank need pics reloaded!

I'm too lazy to go back through this thread and fix all the links after the photobucket boondogle, but here are the tank related pics.

[dayj1]

and more...

[smbrouss70]

Ummm, Yeah, we definitely need a lot more info on that sweet little 68!

[ERASER5]

And a few more of engine mods, like that sweet oil fill tube!

[Red Foreman]

I just stumbled across this build, awesome work on the LS!
The throttle body/air cleaner has given me ideas on my next future build.
Keep up the great work!

[65 c10 project]

I'm very impressed with the truck, great job.
I have a few questions though.
How is the throttle set up? Throttle by wire or cable?
I am wanting the same swap but with a manual trans in my '65, since I'm going with a manual trans I won't need any speed sensors Etcettera so I'm thinking of going with a standalone ECU. Is that something you would recommend?
I think a standalone ECU would make it a lot easier to wire.

[dayj1]

Originally Posted by Red Foreman

I just stumbled across this build, awesome work on the LS!
The throttle body/air cleaner has given me ideas on my next future build.
Keep up the great work!

Thanks!

Originally Posted by 65 c10 project

I'm very impressed with the truck, great job.
I have a few questions though.
How is the throttle set up? Throttle by wire or cable?
I am wanting the same swap but with a manual trans in my '65, since I'm going with a manual trans I won't need any speed sensors Etcettera so I'm thinking of going with a standalone ECU. Is that something you would recommend?
I think a standalone ECU would make it a lot easier to wire.

The throttle is DBW. On the ECU, I've never dealt with an aftermarket unit. Due to the sheer number of them out there, factory truck computers/harnesses are fairly cheap and they're very reliable. For those reasons, I've always used OEM parts.

[65 c10 project]

Originally Posted by dayj1

Thanks!



The throttle is DBW. On the ECU, I've never dealt with an aftermarket unit. Due to the sheer number of them out there, factory truck computers/harnesses are fairly cheap and they're very reliable. For those reasons, I've always used OEM parts.

Ok, thank you for the info.

[Low Elco]

That gold one is gonna be niiiiiice when you get it put together.

[dayj1]

Originally Posted by Low Elco

That gold one is gonna be niiiiiice when you get it put together.

Thanks! I sure hope so. As we all know, it's a lot of work.

[dec010974]

Dayj1, my hero, the smartest guy I know, I have a few questions. This pic looks shorter than your first set up. i want the sbc look. can you explain the reason why? I'm in the middle of this swap, on a 1980 gmc c15. i have a 4.8/4l60e, stock harness, and i have two options, the 4150 throttle body, or the thingy, figamabob, you created. my figamabob is an 1 inch thick, to compensate, for the tall fuel injectors. help me out and explain the madness. thanks in advance, Clark.

[dayj1]

Originally Posted by dec010974

Dayj1, my hero, the smartest guy I know, I have a few questions. This pic looks shorter than your first set up. i want the sbc look. can you explain the reason why? I'm in the middle of this swap, on a 1980 gmc c15. i have a 4.8/4l60e, stock harness, and i have two options, the 4150 throttle body, or the thingy, figamabob, you created. my figamabob is an 1 inch thick, to compensate, for the tall fuel injectors. help me out and explain the madness. thanks in advance, Clark.

The difference in the setup on the blue '72 and the gold '68 is mostly in the air cleaner base. The base on the '72 started life as a stock '86 C10 air cleaner and is what I'll call a "flat" base because the bottom of the air cleaner element is vertically at the same height as the air cleaner flange on the throttle body. The '68 has a "drop base" air cleaner which is 1.5" below the flange. It doesn't sound like much, but it makes a big visual difference.

I'll probably end up using a taller element in the air cleaner (4" instead of 3") to provide enough room to squeeze a MAF in there like the setup on the '72. However, I do like the look of the shorter air cleaner and might just ditch the MAF and go with a speed density tune.

Also, the adapter that goes from the 4150 flange on the intake to the 3 bolt factory 5.3 TB is 1/2" tall in my case. That allows the plug on the TB to just barely clear the fuel rail with factory truck injectors (standard injectors and not taller flex fuel injectors). This would be a non issue if had the foresight to make the adapter in such a way that the TB was turned 90 degrees and the electrical connector pointed toward the rear of the engine. Hindsight is always 20/20

The TB that you pictured is by far the easiest way to do this if you can absorb the cost. A cheaper way would be to buy one of the readily available adapters for a GM TBI throttle body to 4150 flange and use a TBI unit with the injector pod removed. It won't flow as much air as the Holley unit, but that shouldn't be an issue with a stock 4.8/5.3/6.0.

I hope that helps to answer your questions.

[solidaxel]

Just make sure you secure the bolt on the inside of the tank "in case the other guy removes both nuts" to tighten the wire lug on the post!
I am open to suggestions on what to use in a wet fuel environment

[dayj1]

Originally Posted by findog78

That fuel set up is sweet! I've been reading through this forum for weeks reading up on on how to do the fuel return issue for EFI. That's the cleanest one I've seen to keep my tank. Where do I buy all those pieces?

Originally Posted by findog78

Well I found the Tanks, Inc link in your thread. Where would I get the electrical lead pieces for the bulkhead? Thanks.

Tanks, Inc (as you found) for the mounting ring parts. They sell the parts for far less than I value my time

I buy the tubing at NAPA because they're the only local supplier that sells tubing that isn't coated and I think the zinc plated steel and/or Nickel-Copper line looks more period correct on an old car/truck.

I buy almost all of my fittings at http://fittingsandadapters.com That's where all the tube nuts and JIC (AN) fittings came from.

I made the electrical bulkhead and replacement fuel sender plate on my lathe because the price for fuel bulkheads from any supplier that I've found is ridiculous for what they are. It's made of nylon which isn't affected by gasoline.

Originally Posted by aggie91

I think he made his own

Correct

Originally Posted by solidaxel

Just make sure you secure the bolt on the inside of the tank "in case the other guy removes both nuts" to tighten the wire lug on the post!
I am open to suggestions on what to use in a wet fuel environment

The bulkhead is threaded such that the stainless stud is screwed into/through the nylon. I get what you're saying, but someone would really have to try to screw it up even if they removed the locking nut. That said, nothing is fool-proof when you have a sufficiently talented fool.

[SCOTI]

Originally Posted by dayj1

.....The bulkhead is threaded such that the stainless stud is screwed into/through the nylon. I get what you're saying, but someone would really have to try to screw it up even if they removed the locking nut. That said, nothing is fool-proof when you have a sufficiently talented fool.

This is soooooo true. It sucks too. We have to create SOP's @ the manufacturing plant where I work for equipment operation, cleaning, & adjustments.

The 'sufficiently talented' group you speak of constantly create (force?) revisions w/these SOP's.

[buddylee]

Why can't I see the pictures

[mongocanfly]

he used photosucker for his pics...there's something you can do with your computer that allows you to see them but I'm no computer guru and I don't understand it...put (photobucket) in the search...we have a thread on it how to fix it...

[sprint_9]

I wanted to add that the radiator hose information was spot on. I crossed those numbers to a Gates hose and it worked great on my truck. Saved me a bunch of searching.

[dayj1]

Originally Posted by buddylee

Why can't I see the pictures

PhotoBucket quit supporting third party hosting a while back and created broken links across the interweb, I've attached an overall shot of the motor below.

Originally Posted by gringoloco

Best swap ever...

LOL. Thank you for the kind words!

Originally Posted by sprint_9

I wanted to add that the radiator hose information was spot on. I crossed those numbers to a Gates hose and it worked great on my truck. Saved me a bunch of searching.

I'm glad it helped.

[garmar]

Awesome build!

As to the great Photobucket debacle, there's an extension you can add if you are using Chrome Browser called Photobucket embedded image fix. It works great and I've had zero issues with it for over a year now.

[jjzepplin]

Just read through this and it gave me goose bumps. (is that ok?) That is one beautiful setup! So you could run a carb with a MAF sensor adapted on top of it? I have a 99 TA 5.7 and T56 I want to put in my 72 Blazer. I am probably going to use the stock harness. Man those wires are intimidating! I redid both harnesses on my trucks using stock stuff and that scared my neighbors (HAHA)!