WebNov 25, 2004 · Car will be used for cruise-ins and test and tune at the local drags. I am planning on using a hydrolic roller cam. I have talked to comp cams tech people about 2 … WebGen VI 454—NA vs Comp XR276HR Cam Having run the 454 with the stock cam and nitrous, we decided it was time to replace the wimpy stock cam and try something a little more powerful. The mild (near-stock) combination and limited piston-to-valve clearance all but dictated a mild cam profile, but we nonetheless wanted something that offered some ...
350 Vortec Page 2 Hot Rod Forum
WebAug 25, 2010 · With my combo, the XR276HR produces a few more horsepower according to my old Desktop Dyno, but the XR270HR torque curve is a lot flatter compared to a … WebJan 12, 2013 · I have the XM276HR cam, which is the same as the XR276HR but on a wider LSA (for better idle quality and tunability. w/ a carb that's not so important). A 600 will be fine on the street, would a 750 dyno more hp up top? Maybe. A recurved stock HEI will be totally fine on that. I'd run 15-20 initial timing, 34-36 total. It is a great running engine grossology programs
67 Camaro comp cams xr276hr - YouTube
WebNov 6, 2024 · C3 Tech/Performance - Which cam for my 383 - Lunati Voodoo 270/278 or Comp cams XR270HR? - I have a stock 1980 L48, recently rebuilt 350, long tube headers. The engine will be rebuilt to 383 with, there will be new heads (195cc, 64 or 70cc, 10 - 10.5 SCR), new intake manifold, hydraulic roller cam, 1.6 rockers. I... WebNov 15, 2002 · Edelbrock 170cc heads, Comp XE274, RPM manifold and a Demon 750. The tests showed good midrange torque, about 365 ft# at the rear wheels at 3500, but the horsepower peak was less than 300 at 4800 rpm, and the engine was done by 5500. Compared this to a 56 Vette 383 we did yesterday, AFR 190's, Comp XR276HR and DFI. WebNov 22, 2007 · Extreme Energy Retro-fit XR276HR Adv. Dur. 276in./282ex. @.050” 224in./230ex. Lift .510in./.510ex. ... Expecially the dyno #'s. 540Rat would the 280HR still give me some decent gas mileage on the hwy or will it be down in the gutter? ... Same 290 heads with the same valve combo, used on a 402.030 motor, 9.5/1 CR. I ran a Comp … filing a report with osha