Cams choice, Low CR vs VE%
All 3 have the same short block, The Base HP/TQ on 1st one is just a 4bbl dual plane and headers on a stock 5.9l magnum there another dyno out there that have manifolds instead of headers and is like 10 hp less. The Mod is air gap eddy heads and comp 275 roller cam, and last one is 380hp crate engines 288 cam with single plane and headers.
None of these engines have ton of cr, the main one I'm comparing here is the 300 hp and 380 hp crate engines from 2500-4000 rpm there both have about the same power. For one we're comparing dual plane vs single plane and about 7 steps up in cam size, the 380 hp I know from have it, it drop off under 2000 rpm. Which is exaggerated by 2.96 gears I have. , and I have a stock 5.9l in my jeep and pulls strong under 2000 rpm. Can't see why a mild cam in the 300 hp crate wouldn't be all gain with maybe with slight loss just off idle depending on cam choice.
To me it seem like the added air flow allow by the cam can offset any or some of the loss in dynamic cr or even gain depend on cam etc..,
All 3 have the same short block, The Base HP/TQ on 1st one is just a 4bbl dual plane and headers on a stock 5.9l magnum there another dyno out there that have manifolds instead of headers and is like 10 hp less. The Mod is air gap eddy heads and comp 275 roller cam, and last one is 380hp crate engines 288 cam with single plane and headers.
None of these engines have ton of cr, the main one I'm comparing here is the 300 hp and 380 hp crate engines from 2500-4000 rpm there both have about the same power. For one we're comparing dual plane vs single plane and about 7 steps up in cam size, the 380 hp I know from have it, it drop off under 2000 rpm. Which is exaggerated by 2.96 gears I have. , and I have a stock 5.9l in my jeep and pulls strong under 2000 rpm. Can't see why a mild cam in the 300 hp crate wouldn't be all gain with maybe with slight loss just off idle depending on cam choice.
To me it seem like the added air flow allow by the cam can offset any or some of the loss in dynamic cr or even gain depend on cam etc..,
