Sxynerd

I was chasing numbers when I should have been concentrating on chasing Miles on the road. :0/ Lessoned learned.

Jay-rod427

Uber typing makes me

Any size blower will work on a stock motor, just not necessarily efficiently... An F1R on a stock 302 was probably consuming more power than it was adding to the total RWHP. Doesn't mean you don't end up making more power than baseline though.

Like Uber said these 275 drag radial guys have hundreds of passes and thousands of hours tuning in those cars to make them run in the 4's. and compared to a street car they are tuning everything not just power, gear ratios, weight, spring rates, shock settings limiting straps, weight distribution, 10 passes on a brand new set of tires and get rid of them, boost controllers, air pressures to the 1/4 lb. So many ridiculous factors have to be just right, including the track surface and weather. Tuning power to where even at the 1/8th mile finish line they are still adding enough power to be on the edge of spinning, carrying the front end a foot off the ground for the first 400 feet!!!

UPRSharad

Pullied it WAY down... IIRC, it was about half of the max impeller speed on the stock 302 and now it's pulleyed to redline on the 427. The car went from 103 mph trap speed with the stock 302 to 122 mph on 12 pounds of boost.


The F1-R was not ideal for the stock 302, but it certainly made plenty of power. (roughly doubled the stock motor's output) I only ordered the F1-R because we had already started building the 427. Regardless, I put the F1-R on the 302 just because I thought it was funny. I fully expected to run over the crankshaft on the dragstrip. Surprisingly, not only did the 302 live just fine under F1-R, but I pulled it out when we built the 427 and I ran the 302 in my '93 LX for over a year afterward. I even went 106mph in my '93 coupe. That motor was crazy!

Anyway, the 427 should let that F1-R stretch its legs.