I am just learning and getting into the whole engine building thing, so I always have a LOT of questions, and I really appreciate the way that you guy (and gals) offer advice. THANKS!! Now, I have just about gathered all of the parts that I will use in my engine rebuild/swap, and was just curious if someone could give me a ball park figure of the power that I can expect from my build. My list includes: '83 302 Fresh rebuild- all new gaskets piston rings main bearings cam(266 duration Crane) and lifters headers dual exhaust (straights-no mufflers or cats.) 4 bbl. intake, and 650 carb. I also am wanting to install a B&M Megashifter, but that will probably come a little later(so the headers might have to wait till then ) By the way, the trans is my '72 C-4, and the rear-end ratio is still 3.00(I know, I know! ) I'm just kinda curious how this setup sounds to ya'll. Any advice or suggestions are VERY welcome, and like I said, could someone maybe give me a power figure. Thanks everybody, Preston
sounds good. althogh i wouldn't run straight pipes, apart from the fact that it would be rather loud, but you also loose alot of low to mid power. also as far as exhausts go i would have it siamesed some place, i have been told that it makes for better power than an H pipe (someone confirm this please). all of the rest sounds really good. good luck on your project
Ball Park Figure Your engine build sounds good, I ran some figures that came close to what info you gave, into desk top dyno program. It came up with a figure of 230hp @ 4000rpm and torque of 300ft lbs. At 5000 the hp dropped to 200 and torque to 200. This is a approx. readout and can vary one way or the other. There are some build tricks that can be done to help with some power increases such as advancing the cam timing and other add ons that would help, but in your case with stock heads and converter stick with the basics as you mention. Is this going to be a race only or a street/strip car? Either case, when you start the build make sure the block is prepped, clean and within specs. If you scimp here it will come back to haunt you later. Without getting into too much tech stuff here I will offer one piece of advice that works for me, work in a clean and dust free area if you can. Keep hands and parts as if you were a surgeon, dirt will cause premature failures and cost mucho dinero. The engines seem to run better too for some reason? Work within a budget thats comfortable for you and take your time, that is very important. Good luck and keep us informed.
I'm REEEEEEELY smiling now! Thanks Mr. Dave. Maybe to some folks, that might not seem like too much, but to me it sounds good. The car will be a street/strip car, and while I am in college, hopefully I will be able to add on a little more. Thanks a lot for the figures, ya'll are great! Preston
Desktop Dyno Used to be distributed by Mr. Gasket, found them at most parts stores that handled performance stuff. Check the catalogs such as Jeg's or Summit, seems I saw them there too.
Re: . Ahum.....Kazza.com will allow you to download the Desktop Dyno and the cam profile plug-in that goes with it for about - $0.00 (but you didn't hear it from me). - give or take a few annoying computer locks and pop-ups. (I know, one shouldn't pirate software....but...but...you know!)
Have you thought about going with an 85+ roller motor??? those engines are putting out 225 horse bone stock. Save the cash and pick up a used roller motor with low miles, then build upon that, just my .02
