oldrelics

Okay, I'm just about done with the 394/slim jim. Time to start preparing for the inevitable, the SBC 350/TH350 insert. Anybody else done it? Tips n tricks?

No, I'm not spending a nickel more on trying to keep the heap going. Its my families more-door, so purists back away.

Also looking forward to the front end losing 300 lbs.

Summerof84

Using the factory driveshaft, a longtail th400 just barely makes it back to the firewall. If a th350 is even 1" shorter, it's going to make a difference. Otherwise a custom driveshaft has to be added to the tally.

billmerbach

Where you located I can set you up with just about everything you need to build a fresh 350

oldrelics

Nobodies done a swap?

J-(Chicago)

I've done it on a 64 88. Just used a big piece of C channel iron for a crossmember and drilled new holes in the frame. I remember the slimjim yoke fitting the th400, but don't remember what we did for a driveshaft. We had a pile of 20 of them out back, and probably just used conversion u joints on something "close enough". It was probably 7 years ago, so i'm a little fuzzy on it. I also remember making custom engine mounts for the frame with the welder. The th350 is going to be really short. I believe we used a th400 with a 9" tailshaft.

oldrelics

Do you remember what manifolds/headers were used?

J-(Chicago)

I believe they were from an olds 403. The type that the crossover pipe drops down in front of the starter solenoid with the crossover pipe under the pan.

J-(Chicago)

not the 60's full sized manifolds with the center dump. The crossover pipe was too short, so we ran dual exhaust from each manifold, and made a block off plate for the crossover hole on the passenger side.

kjr442

I didn't do the work on mine, but it has a 455 in it. I assume it has the long trans. if you need me to take any pictures of mounting, or whatever let me know.

oldrelics

I am talking SBC 350, not an olds 350, sorry guys.

billmerbach

70cutty

You are probably gonna need something like sanderson cast iron headers or shorty header for a camaro.

hookem horns

How bad off is the 394? Might end up cheaper/easier to freshen it up and get an adapter to the transmisson of your choice.

http://transmissionadapters.com/Olds_install.htm

oldrelics

The 394 seems fine, 125 psi cold/dry compression test. Has a slight tick, tickier on first start up.

I love SBC, on stand in garage, beggin for a chance to make the olds rock.

Adapter? $1000! no way.

J-(Chicago)