Caddy Swap update! (finally) - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Longhorn Man · 10-29-2002, 01:05 AM

Hmmm, lets see here....
EARL, Chevy bellhousings will not bolt up...any other style GM will though...also known as the B.O.P. bellhousing. (Buick, Olds, Pontiac) I don't know manual trannys very well, but if you go for a row your own tranny behind a caddy big block....better make sure it is a strong tranny. These monsters well turn it into shrapnal if it isn't up to the task.
As for the tranny I am going to use, I was lucky enough to be able to bolt the caddy engine to the Pontiac TH350 that was in there when I got the truck. (It had a Pontiac 350/TH350 in it already) I do have a Caddy TH400 that will get rebuilt and installed, and it is a long sunuva b!tch. I don't know the length off the top of my head, and all my books are at my place. (I'm at mom & dad's right now)
Bowed, I honestly can't say...there were 2 kinds of big block mounts, the kind pictured up there that I am using...which is a 72 only, or the one I attached on this reply, which is a 68 - 71 deal.
I have never messed with inline engine towers, so I can not say.

crazy longhorn · 10-29-2002, 02:01 AM

Bowed, the 6/250 towers will work for a sb swap,& the eng mounts are the same for the 6 & the sb. I havent tryed the bb on the 6 towers, but dont think that will work due to ex manifold/header clearance issues. You would also have placement issues......the sb fits pretty tight to the firewall on 6 stands,& the bb is wider yet. crazy AL

70c10 · 10-29-2002, 01:53 PM

Nice work Andy,
Keep us posted. I wish I had a Big Block!

6772king · 10-29-2002, 05:33 PM

EARLJUNIOR longhorn mail is right these thing do have monsterus low end torque but if you do CMD has flywheels for cads whith standerd transmisions their price about 300$ p m me if you want their number they have alot of fast cad stuff

Earl Junior · 10-29-2002, 05:54 PM

I'm currently running a Lakewood Bellhousing , a Centerforce clutch with an 11 inch friction plate feeding into a Super T-10. (I bought the tranny second hand, but I got the receipt from Summit which shows the gearing.)

I'm hoping this set-up will handle the torque.

If you think I'm being a bit overly enthusiastic please say so and I'll stick with the TH400 that came with the motor. (If I can find a tail housing that is)

6772king · 10-29-2002, 06:26 PM

HELL NO i think it would be bad as hell with a 4 gear let me know how it goes my next 500 conversion is going to be a standerd with a 540ci stroker kit from cmd

Longhorn Man · 10-29-2002, 11:01 PM

Well, i think I would try it...heck, I'm putting a TH350 behind my caddy pig block.
Just don't get rid of the TH400.

Longhorn Man · 10-30-2002, 12:39 AM

Ok, I couldn't find my cheat sheet, so i went to the basement and measured my Caddy TH400.... jusst over 3 feet at 38 inches.

10-29-2002, 01:05 AM	#26
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Hmmm, lets see here.... EARL, Chevy bellhousings will not bolt up...any other style GM will though...also known as the B.O.P. bellhousing. (Buick, Olds, Pontiac) I don't know manual trannys very well, but if you go for a row your own tranny behind a caddy big block....better make sure it is a strong tranny. These monsters well turn it into shrapnal if it isn't up to the task. As for the tranny I am going to use, I was lucky enough to be able to bolt the caddy engine to the Pontiac TH350 that was in there when I got the truck. (It had a Pontiac 350/TH350 in it already) I do have a Caddy TH400 that will get rebuilt and installed, and it is a long sunuva b!tch. I don't know the length off the top of my head, and all my books are at my place. (I'm at mom & dad's right now) Bowed, I honestly can't say...there were 2 kinds of big block mounts, the kind pictured up there that I am using...which is a 72 only, or the one I attached on this reply, which is a 68 - 71 deal. I have never messed with inline engine towers, so I can not say. Attached Images

10-29-2002, 01:53 PM	#28
70c10 67-72 Addict! Join Date: Feb 2002 Location: The TAX State! Posts: 7,857	Nice work Andy, Keep us posted. I wish I had a Big Block! __________________ Jim 1970 C/10 Fleetside w/Ghost Flames Lowered 4.5" front and 4" rear (Raked) 355/350 Turbo w/shift kit 10" Redneck Performance Verter w/2500 stall Hooker Super Comps part#2808-1 Performer RPM Air-Gap 12 Bolt w/3:73 gears- Eaton Posi Comp Cams XE262 with 1.6 Crane Energizers, Road Demon 625 and Brodix IK 180 heads

10-29-2002, 05:33 PM	#29
6772king Registered User Join Date: Feb 2002 Location: grove city pa usa Posts: 628	EARLJUNIOR longhorn mail is right these thing do have monsterus low end torque but if you do CMD has flywheels for cads whith standerd transmisions their price about 300$ p m me if you want their number they have alot of fast cad stuff __________________ 67 chevy short step 2wd 427 71 chevy short fleet 4x4 396 72 gmc jimmy 2wd 377 71 chevy blazer 4x4 454 69 chevy longhorn 5.9l cummins 72 chevy 400 2wd custom camper 67 chevy lwb 4x4 454-in pieces 67 chevy panel soon 4x4-400 67 gmc dump 4x4 1 ton-305 WTF!! 72 chevy 3/4 ton 4x4 burb 350 70 chevy panel 2wd 302 5 speed tko "THERE IS NO REPLACMENT FOR DISPLACMENT"!!!!!!!

10-29-2002, 05:54 PM	#30
Earl Junior Cadillac power Join Date: Oct 2002 Location: North Idaho Posts: 296	I'm currently running a Lakewood Bellhousing , a Centerforce clutch with an 11 inch friction plate feeding into a Super T-10. (I bought the tranny second hand, but I got the receipt from Summit which shows the gearing.) I'm hoping this set-up will handle the torque. If you think I'm being a bit overly enthusiastic please say so and I'll stick with the TH400 that came with the motor. (If I can find a tail housing that is) __________________ Just for the record, if I'm down to my last potato, I'm not sharing it with a guy who wants to kill me so he can get a better supply of virgins in paradise. That lesson is a little thing I call Economics 101, infidel style. --Scott Adams author of Dilbert

10-29-2002, 06:26 PM	#31
6772king Registered User Join Date: Feb 2002 Location: grove city pa usa Posts: 628	HELL NO i think it would be bad as hell with a 4 gear let me know how it goes my next 500 conversion is going to be a standerd with a 540ci stroker kit from cmd __________________ 67 chevy short step 2wd 427 71 chevy short fleet 4x4 396 72 gmc jimmy 2wd 377 71 chevy blazer 4x4 454 69 chevy longhorn 5.9l cummins 72 chevy 400 2wd custom camper 67 chevy lwb 4x4 454-in pieces 67 chevy panel soon 4x4-400 67 gmc dump 4x4 1 ton-305 WTF!! 72 chevy 3/4 ton 4x4 burb 350 70 chevy panel 2wd 302 5 speed tko "THERE IS NO REPLACMENT FOR DISPLACMENT"!!!!!!!

10-29-2002, 02:01 AM	#27
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,403	Bowed, the 6/250 towers will work for a sb swap,& the eng mounts are the same for the 6 & the sb. I havent tryed the bb on the 6 towers, but dont think that will work due to ex manifold/header clearance issues. You would also have placement issues......the sb fits pretty tight to the firewall on 6 stands,& the bb is wider yet. crazy AL

10-29-2002, 11:01 PM	#32
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Well, i think I would try it...heck, I'm putting a TH350 behind my caddy pig block. Just don't get rid of the TH400.

10-30-2002, 12:39 AM	#33
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Ok, I couldn't find my cheat sheet, so i went to the basement and measured my Caddy TH400.... jusst over 3 feet at 38 inches.



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