Most definately the cams were THE reason this engine tolerated 91 with the 2.4" blower pulley. On CA 91 we find the STOCK blower pulley makes more power by 20-30 over a 2.4" on pump gas. The cams moved peak cylinder pressure UP in RPM allowing us to pulley down on pump and still have proper ignition timing.Very nice, looks it pulls clean up top.
Do you think the cams helped it safely tolerate the 91 octane?
How much left in the stock injectors?
How much boost?
-J
Most definately the cams were THE reason this engine tolerated 91 with the 2.4" blower pulley. On CA 91 we find the STOCK blower pulley makes more power by 20-30 over a 2.4" on pump gas. The cams moved peak cylinder pressure UP in RPM allowing us to pulley down on pump and still have proper ignition timing.
Peak boost was 16psi, dropping to 14-15 up top.
100% stock7,500 rpm on stock rods or is it a built short?
Car left with multiple tunes, the 802RW tune and one with 3 degrees less that put down 778 SAE.Curious if it left the shop on that tune or did you back off some on the timing to account for the vagaries of fuel?
What cams did you guys go with and what did you charge?Good numbers Sean, we did cams on a Trinity car a couple months ago, and got high 700s with it.
It's not high rpms that kill these motors. Everyone seems to think this for some reason. It's peak torque. If the motor is going to go it's going to go around 4k7,500 rpm on stock rods or is it a built short?
E85 is the easiest / safest IMOVery nice Shawn.
What are your go to mods on the 13-14 cars for efficient and safe power/tune (around700rwp) ?
While I agree with you that peak cylinder pressure and then peak detonation potential occurs at peak torque, I'll let you know high RPM took out my oil pump gears, so don't dismiss RPM limits.It's not high rpms that kill these motors. Everyone seems to think this for some reason. It's peak torque. If the motor is going to go it's going to go around 4k
Car made the power at 6950 not 75007,500 rpm on stock rods or is it a built short?
E85 is the easiest / safest IMO