383 rebuild - kinda whimpy on the dyno?
Here's an example on a chassis dyno.
This engine didn't like richer than 12.5 on the dyno, and it also started to lose hp when above 13:1.
Had to show it in mph as the rpm wasn't fully captured.
Numbers next to the AFR are primary main jets, secondary main jets. vac secondary with plain spring.
Best drag strip run (previous to dyno) was jetted 74, 78 so prob 12.7 AFR
Although its not important for the discussion 060 over 340 with Comp cams "High energy 280" SD intake, 340 manifolds.
Car would run 14.0 typically with a best of 13.77, 99 mph. 3.23 gears on 24" tires, 3000 rpm stall.
Here's an example on a chassis dyno.
This engine didn't like richer than 12.5 on the dyno, and it also started to lose hp when above 13:1.
Had to show it in mph as the rpm wasn't fully captured.
Numbers next to the AFR are primary main jets, secondary main jets. vac secondary with plain spring.
Best drag strip run (previous to dyno) was jetted 74, 78 so prob 12.7 AFR
Although its not important for the discussion 060 over 340 with Comp cams "High energy 280" SD intake, 340 manifolds.
Car would run 14.0 typically with a best of 13.77, 99 mph. 3.23 gears on 24" tires, 3000 rpm stall.