Hi all! I am going to put a 383 stroker with a turbo 400 tranny in my 65 GMC. Can anyone give me suggestions on anything that would be helpful? I would also like to get input on what size cam I should use! I want power from takeoff through about 6500 rpm. What size? I also need to find the plastic front turnsignal lamp piece. On the GMC it is different than the Chevy. I had to break them off and now I can't find any anywhere! Or could I use Chevy bezels and all? Any input would be great! Thanks!
I am also using a 383 stroker, but if you're wanting power from take off to about 6500, you'll want to go with a cam that specifies 1500 rpm to 6500 rpm. And one that will have a high lift, especially for the intake valve.
first off,you have to be a little more specific about your combo. what compression ratio are you running?are your pistons flat-tops or "pop-ups"<domed>.has the block been decked?what is the installed height of the piston in relation to the deck surface?also,you did'nt say what heads you have.chamber size<cc's>port flow,and spring rates will also dictate your optimum camshaft choice.the real question is,how much are you willing to invest into your valvetrain.and,what is the trucks true intended purpose for existence<reality here dude,no pipe dreams.remember,you'll be the who has to live with the truck on adaily basis>you have the choice of hydraulic flat tappet,solid flat tappet<you'll have to do periodic valve lash adjustments>or, solid or hydraulic roller cams as well.e-mail some detailed specs on your combo,and we'll see about getting your stroker cammed to suit your needs.
If your looking for that type of high range rpm you are going in the wrong direction. Most race cars don't use 383s for speed, that is a power motor. You need to go with a 400 block, and turn it into a 355. you dont need a stroker. You need a destroked engine. Use a 400 block and 350 crank and rods. The 383 is externally balanced, so you have to use the 400 harmonic balancer and the flywheel from the 400. The 400 heads need to be used because of the water jackets. My suggestion is this. I would go with the 400 block, 350 crank and rods, and an economizer cam. the 350 crank is internally balanced so use a 350 flywheel and harmonic balancer. 383s are 1/4 mile runners and excellent for towing and pulling. If you want an engine for speed then the 355 is for you. Ask anyone who races and knows about speed, they will tell you the same thing I did. Well any who just tossin in my two cents. Happy motoring -Russ-
