I broke this cam/lifters in my high compression stock appearing engine and then sold the short block. This cam wasn't a good choice for the new owner (I talked him out of it, much different combination than what I had). The cam was ground by Steve Long, these are the KB lobes, he also ground cams for Poston. Cam has less than 20 miles. The lifters are Scorpion (Chevy, short travel), http://www.summitracing.com/parts/SCC-SRP4114ST/. These have a carbide face and can be used on multiple camshafts, they are noisy though. Preload is set to a minimum (0.015" max). Here is what Scorpion says about them, http://www.scorpion-performance.info/lifters/. You will need longer push rods with these (9.350" included). Flat Tappet, hydraulic Cam Specs are: 240/260 on a 114 LSA, overlap = 22* IO = 10* BTDC, IC = 50* ABDC EO = 68* BBDC, EC = 12* ATDC (10+12 = 22, overlap) I paid, $220 cam, $145 lifters, $85 pushrods or $450, $275 or best offer. Prefer to deliver to GS Nats but will ship.
1st up, Rob,....I'm still contemplating this cam. I hate to beat you up with questions again, but what is the power range on this cam...what intake CL did you use..how much lift was it.?? Was this the cam in the 494 motor that I heard run...and what would you suggest for compression with this cam.... min- max. Also, I would still be using my cast iron heads with this cam .. Sorry... scratching head on this one..::idea2: jerrold,,
I degreed the centerline to 110, I would think the power range is 3-6k approximately. I never had any runs on it and the person who bought my short block had his own cam. With a light car, 10:1 might be ok with it providing a good torque converter. I can't recall if you ever heard this one idle, I broke it in and then sold the shortblock.
Rob..with my car not being real light and comp. at 10.8 ....this cam would be a little risky for detonation.. thanks again..jerrold NEXT...
It's not detonation you're concerned about but the potential of lower cylinder pressure at lower engine speed compared to what you have. This cam has more overlap than what you currently run and would be less prone to detonation. But either way no problem.
Yea your right..I had that backwards,....so the shorter the overlap the more bleed off in dynamic comp....your cam has a little more duration at .050 than what I have now. Im pushing 210 in cyl. pressure now,...so cyl. pres. would probably drop off..right...
Still backwards...shorter overlap = less bleed in cyl pressure. The longer the intake and exhaust valves are open the more time there is to bleed off cyl pressure. My cam would have less cranking cyl pressure but potentially more in the upper rpm range...
OK ..thanks for clearing that up,...Must be getting old can;t remember anything... I knew this stuff at one time,...I'll just pass for now... Too many irons in the fire with my sons buick...sorry... thanks again.. NEXT...
