Big cam low compression See All 16 Photos Dial-back timing lights offer a quick check of both initial and total mechanical advance. . Nov 25, 2010 · granted more compression in a natural assperated application is more effecient, better throttle response, maybe wind up faster. Nov 18, 2013 · Because the big cam has a lot of valve overlap, and that bleeds off the cylinder pressure. As far as the original question goes, a big cam with low compression will make it a dog. 42 gears 28X9 inch tires. If the engine isn't running (not in motion), there is no compression. this is where the lack of compression ratio will hurt you the most. 3000 pound car on motor only ran 145 mph with a comp shelf cam 286/296 . but i have a 572 whose math says its 10. Course that was years ago when 93 was around and running 11-1 w/iron heads wasn't a big deal. Apr 27, 2010 · summit cam 218/228 500/500 lift work good for me plus it was cheap as hell. 2 to one compression with the flat top pistons. " Put a big cam/w a lot of overlap in a low-compression engine, you won't be happy with the Oct 7, 2004 · Old friend of mine ran this in a '63 split window- Looked stock, sounded incredible, ran hard for what it was! Compression was around 10-10. There is a lot of information available regarding dynamic compression ratio, even though it's a "made up number. Sep 6, 2021 · It doesn't matter what the compression ratio of a "static" engine is. 8. I ran low 12's @112,and trapped over 122mph on a 125 nitrous hit. 5-1. You may be able to go bigger due to your 3. 90 gears. 748 lift Jul 18, 2019 · Heads could also be milled to increase compression. Also 7. By the way 7. Using a cam recommended for a higher compression ratio in a lower compression engine will decrease peak power somewhat, but has a much bigger influence on low rpm power and torque. 1 454 stock bottom end,stock 781 heads performer rpm 3. You don't have enough pressure on the compression stroke to use the fuel octane right at the limit of detonation, so you have weaker pressure on the piston when it fires than you could have with more compression and the same octane fuel. Oct 18, 2018 · This is especially true for low-compression engines with big cams. 1 needs lots of timing mine ran best at 42 degrees total, and 36 degrees on nitrous. yqcvr auhdas ysknof nvzkoe jqk jsgui uorph zqx cyvc shxfznx