That Car Craft article that AFR posts on their website about the 400 hp 302 with a stock cam has been debated for years. Some very good dyno operators have tried to duplicate the test, none reached 400hp. Belief among the professionals is that the dyno was "tweaked" to make Car Craft's advertising customer (AFR) look good for the article.
Desktop Dyno Does anyone here have a dyno program that could put the specs of the 400hp AFR engine in to see what they get?
I matched the 455 HP numbers in from this link with my DeskTop Dyno with semi-close. I got 444 HP at 6,000 RPM and 388 TQ at 5500 RPM. On the 421 HP sample, I got 425 HP at 6,000 RPM and 378 TQ at 5,500 RPM. DeskTop Dyno says it can be 7% off. These numbers are the DeskTop Dyno numbers reduced by 7%.
I believe you. While is is certainly "possible" to make 400hp with a 302, it is not easy. The Boss 302 was pretty radical (for the street), and it put out about 375 (even though it was rated at 290, that was just to keep the insurance companies off people's backs)...
We built my cousin's 289, AFR 165, 1.7 RR, Comp 270H, bored .20 if memory serves, 3.8 rear. By Engine Analyzer 3.0 its just a touch over 400hp at the flywheel. 3300 lb with driver ran an 8.09 in the eighth, no wheelspin.
Edelbrock has an RPM kit, for 1700 bucks.. comes with heads, intake, cam, lifters, etc.. the whole top wnd of the engine.. good for 367HP fit that with some nice forged pistons, and a decent crank you will be over 400. 347 stroker will def do it... If you buy one complete.. for around $5000 it will be over 400 HP NO PROB..
swing pedal clutch Hi, everyone, somebody knows how i can install a swing hydraulic clutch in a maverick 4 speed.
400 hp? Yeah, maybe at 10,000 rpm. Mild cam in a little motor, rpm is the only way it will pump enough air to make big hp. I'm not surprised there's no wheel spin.
With street tires it'll spin severely. Do the math on the weight vs time in the eighth. It shifts at 6700. Peak is about 6500. I helped with this engine, I knew what the program said before we built it and didn't expect to come close. Once we got it together, it suprised me. It will just about lift the driver's tire at launch.
Doesn't anyone remember the guy who built a 500hp 302 71 Comet using a junkyard Explorer engine for a 3 part magazine article? (backed by a Toploader and 4.57 gears)...he built the engine for 500hp on a dyno, then ran low 10 second 1/4s (10.17 minus a hood and a passenger seat )...and it was street driven (fuel injected using the factory coil packs/electronics) I never found/read the 3rd article...he was saving his nitrous for AFTER he made a 9 second pass N/A
something isn't adding up in your combo, because I've seen plenty of 300 hp cars run 7 (and a few) 6 second 1/8th mile passes...
