Post by professor on May 28, 2008 17:22:55 GMT -5
I was very curious how the blower would work out on the 283 he put in last fall. He took me for a ride last week ( it was very loud since he put the big 3" flowmaster and pipes on and I was leery of getting a ticket since I don't live in the same town, so Matt drove). I had calculated the boost level at 12# with the pulley that produced 7# on the 350. He used the same 305 heads that I had opened up to 64 cc. (mistake to do- did almost nothing to reduce detonation on cheaper gas) so I knew the compression on the 283 would be real low - around 7.5, it runs great, you would NEVER know it's a mini-mouse motor.
Now this car runs hi-way gears of 2.75 ratio so low gear shift- out at 5000rpm is 60 mph. You can feel a little bit less torque compared to the 350 at lower revs but it still has the same renlentless top-end pull the 350 had. Quite amazing to me. Boost we see is 10# so the motor is breathing good. Matt told me he is running 87 octane. I am sure the small bore helps to reduce detonation. He doesn't know where the timing is set to but it runs great and no ping.
By the way, a long time ago, before the 144 BM blower, I had a turbo on the car but the HEAT the turbo gave off into the motor area was atrocious. The blower gets hot but NOTHING like a turbo. I was worried about cooking my wiring.
Now this car runs hi-way gears of 2.75 ratio so low gear shift- out at 5000rpm is 60 mph. You can feel a little bit less torque compared to the 350 at lower revs but it still has the same renlentless top-end pull the 350 had. Quite amazing to me. Boost we see is 10# so the motor is breathing good. Matt told me he is running 87 octane. I am sure the small bore helps to reduce detonation. He doesn't know where the timing is set to but it runs great and no ping.
By the way, a long time ago, before the 144 BM blower, I had a turbo on the car but the HEAT the turbo gave off into the motor area was atrocious. The blower gets hot but NOTHING like a turbo. I was worried about cooking my wiring.
blowers arent cheap
