chevy motor

[huntingfool10]

i might be buying an 88 chevy cheyenne but it only has a 305 in it. i have a 350 motor jus sitting in the shed but how much work and money would it be to take that 305 out and put the 350 in

[grimesjm1]

Originally Posted by huntingfool10

i might be buying an 88 chevy cheyenne but it only has a 305 in it. i have a 350 motor jus sitting in the shed but how much work and money would it be to take that 305 out and put the 350 in

If it is the same year, there should be a minimal amount of labor and money involved.....
The one thing i'm not sure of, you may have to change the computer. I don't think you will though, they are basically the same block, only thing different is the bore.

Other then that, it's a pretty simple swap. The only money that you will need to spend will be in exhuast manifold gaskets. There are a few things you may want to replace though on the 3250 before you drop it in, just so you can say you did it. I would recommend replacing the rear main seal and the oil pan gasket any time you replace an engine, you may also want to consider the timing chain and front main seal.

Labor wise, for the first timer at pulling and replacing an engine, you are probably looking at a couple hours to pull it and a couple to put it back in....once you do a few of them you can have the engine out in about 45 minutes and back in in about 2-3 hours, plus the time in putting in any seals, gaskets, etc. you choose to replace. Good luck!

[snatchmasterflex]

It should be very easy to change, if the 350 is complete then you just need to plop it in and hook up your computer to your TBI and your brakes etc. If the 350 is not complete then you would need to pull parts from your 305 to place on it. (if you want a motor with high compression try popping your 305 heads on a 350 [but not suggested]) In a case if it were a complete motor out of a newer truck then the Injection System will be different but easily fixed by removing the Intake and TBI from your original engine and placing it on. I agree with what was said before and change your rear main and timing chain etc. ITs alot easier to do when you have the engine pulled and on a stand.