I've heard good things about Jasper motors, and am considering one for next year. I think the Paxton blower is probably not the best way to go.... well... maybe later on ;)
Has anyone bought one of these? Do you know if the advertised HP and TQ are accurate? I always heard that a rule of thumb was you had to spin a
302 to 6000 or so to get 300hp out of it. Their Stage II 302 is advertised at 300 @ 5500 rpm and 321 lbs./ft. @ 3700, "SAE standards". I don't know if this is the same as SAE Net. (??)
This is a desirable option for me cost-wise because I wouldn't have to replace the carb, manifold or any accessories, and wouldn't risk blowing the 8" Currie I run. And if the power numbers are accurate, I would likely get the mid 13s I want with my Tremec and 3.80s (assuming good traction) and retain drivability.
The far less costly option is to do a cam and head swap on my parts-store ATK motor, but I think the increased frictional losses would prevent me from making the power I want to (300-325). Plus I don't want to spin the hell out of a mediocre-quality engine, or supercharge it, then blow it. I'm not any sort of expert with building engines (obviously) so I don't know if my assessments are accurate or not.
Any suggestions, comments or other ideas would be sincerely appreciated.
Thanks,