WebAug 8, 2013 · The LS1 cam would certainly offer additional performance if you kept the revs above 4,000 rpm, but know that below that point there was a torque loss. ... Cranking compression: 188 psi: 182 psi ... WebJan 13, 2024 · Cranking compression 185 psi Peak power 376 at 5,900 rpm Peak torque 389 at 4,500 rpm Average HP 296 Average TQ 362 HP/TQ Gains (Over LM7 cam) 2,500 -8 lb-ft 3,500 0 4,500 0 5,500 +23 lb-ft (24...
Running Dynamic Compression Test - How To Do It And Why
WebJul 29, 2024 · The answer is yes, but it has to factor in engine speed, displacement, cylinder seal (leakage past the rings and valve seats) and rate of change of engine speed as … WebJan 6, 2024 · To answer your question of whether the cranking psi can tell you what the compression ratio is: No, with some caveats. If the engine is running and it idles smooth and pulls plenty of vacuum (say 15" or more) but the cranking psi is down below 150 then you can pretty much assume it's a low compression engine (say 9:1 or less). nph on mri
2015 Pro-S 800 Compression Test Hardcore Sledder
WebMar 3, 2024 · Running dynamic Compression Test At Idle Speed: Should be 50 to 75 (PSI) (about half of cranking compression). Snap Throttle Compression: Should be (about … WebApr 14, 2024 · I have a 408 bbc with 9.67 to one compression and a cc 270 magnum hydraulic cam timed in at 104*. Intake closes at 59*. My cranking compression is … WebFeb 20, 2005 · So while cranking compression is more directly related to effective CR than to static CR, the latter is still quite useful info when performing a compression … nigeria ethnic map and states