Knight88

what would need to be done to the car to make this mod happen? i was wondering b4 i got in over my head.... i was lookin at buying a built 350 and turbo trans to replace my worn out 350tpi and 700r4 but i dont know what exactly it would take to do this. what parts would i need to replace and would it be worth it or should i just buy another 350tpi and 700r4 tranny? thanks guys

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godreject

if by turbo trans you mean th350 tranny don't do it, you will get horrible gas mileage, bad driveability andwill hate yourself for not keeping your 700r4. As for going carb its all about personal choice and your intentions with the car,

Knight88

well i put a harwood 4in cowl hood on it and i want to put something with a good bit more hp under the hood. plus my engine has over 200k on it and i think its bout time to replace. but im just not sure of the process i would have to go thru to put it in

nitemare70

Sorry for the long post, but I hope it helps. I had a 1977 350 resting in my shop when I bought an 83z that knocked. Swap motors, simple I thought. Found out it would fit but the dipstick was on the drivers side. This puts it in the way of the manifold. If U run headers, no problem. Smog headers were to $$$$ and others were inspection failures. That was the biggest problem I had with "early" 350's. As for the trans, I have a T-5. Other than buying or building a mount for the torque arm and driveshaft lengths, I do not know what a th350 would be like.

nitemare70

Forgot to mention the fuel pump pressure. Mallory makes a regulator that will allow the electric pump in the tank to work with a carb. U will not have to pull the tank to remove the pump or reroute the fuel lines to the passenger side of the car.

Knight88

thanks i appreciate it. so i would be able to use old motor mounts and etc? do u think it would be less of a headache to just get the same engine?

nitemare70

There will always be little things that pop up with any project. A 350 is a great improvement for these cars to me. There would probably be more work in changing to carb than changing to a 350. I believe there is a sticky on changing to carb already. Read it and consider that first.

Knight88

thanks guys

five7kid

A couple of details using an older engine in a "newer" car:

Dipstick: Changed from driver side to passenger side in 1980. The tube from a '79-earlier engine gets in the way of 3rd gen f-body exhaust manifold. Headers solves the problem.

Flexplate: '86-newer is one-piece rear main seal crank, '85-older is two-piece. The crank mount changed between the two types. 70's flexplates were typically 168-tooth, which is fine as long as you don't have headers - the starter fits farther out from the block with 168-tooth, and some headers run into it. If you use stock f-body manifolds, shouldn't be a problem. If you get an '85-earlier 2-piece RMS 153-tooth flexplate, the block may not be drilled & tapped for the starter. Just another thing to verify as you put parts together.