when it comes to edelbrock carbs, thunder avs or performer? performer rpm manifold, trying to get around 400 horses...dart windsor jr heads, comp cams 274... also im trying to decide i can get it as a kit with an 800 cfm thunder or i could buy them individually and go with a 600 or 650 what do you guys think???
Throw the Edelbrock into the street, run over it on the way to the speed shop to buy a Holley 750 dp.
i was wondering about edelbrocks beause im completely new to tuning carburetors and all of that fun stuff and ive heard edelbrocks were more user friendly
If you are running a 302 with a 274 comp cam you won't get enough duration to get 400 HP. With that cam you will only allow the engine to breath well to about 6200 RPM. You might get 350 HP from a 302 at .030 over bore and 10:1 compression. Putting a bigger carb on it is not the answer.
Yeah...about as user friendly as a rabid doberman. I'd run either manifold. Not a huge difference between the two. And, for the money, the Weiand Stealth is a damn good intake also.
I don't know if that is enough manifold, or cam, to get 400 horses out of a 302. Now if your running a 347, or any 351 version, you're probably okay. Dump the idea of using a Federal Mogul carb and go with a Holley. I'd use a DP Holley. Probably a 700. I like that one for it's extra little perks over other DPs. That cam could do much better if it had an intake to match it. The RPM is just a compromise between high and low rpm power, not the best. If you want that kind of HP from small cubes, you do not have the luxury of compromise. If you still insist on limiting yourself to a dual plane intake, I like the Stealth better myself.
You haven't said what engine size you are working on... I ran a 306 through the engine model and came up with: 321 FWHP and 314# FWTQ 98% VE EDIT: The graph shows a pair of lines for a less powerful engine. Those are the graph of a STOCK 72 Maverick 302 engine.
I added a Vic Jr intake. NO OTHER CHANGES. It added: 20# TQ 25 HP 5% VE for a total of 103% Edit: GT40X heads (inexpensive aluminum) Added another: 40# TQ and 43 HP with 109% VE 389 FWHP at this point. Still playing Just for giggles, I installed AFR 185s. 417 FWHP and 114% VE! And that was still without changing any other stuff to match the heads. I believe I could keep the short block, cam, and heads the same and still add a bunch to that 417 by swapping intake, carb, headers, mufflers, etc... This thing is still running 6901 headers!
