Is This Cam Too Large
Thread Starter
2nd Gear
Joined: Jan 2006
Posts: 2
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Is This Cam Too Large
i haver a 72 vette.stock 350, i took the 76 cc heads off and replaced them with stock 64cc 041 heads#3847041..close ratio 4 spd.3.08 rear,,weind stealth manifold hooker headers and side pipes,,edelbrock 600cfm..i chose a comp cams extreme energy 268..will this kill the low end..i also have a de265 whitch i thought mite be good on low end but run out of a hard pull at 4500,,any help would be greatly apreciated,,i drive it on the st in the uk...and is there any chance some one can please do a destop dyno on these cams in my engine..ty very mutch ..mark from australia but unfortuanlty living in the uk..i love the states.. 
Last edited by mark72vetteroadster; Jan 18, 2006 at 12:09 PM.
Team Owner
Joined: Feb 2005
Posts: 32,519
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From: central America
St. Jude Donor '08-'09
I'm running the XE268H cam in my 72, only have the 76cc heads with larger valves, and pop up pistons...should be fairly close to what you have compression wise (see my background for more info). It doesn't kill your bottom end torque, but it really likes the midsection of the rev range (3000 rpm to 5000 rpm). In fact I'm pretty happy with this cam up to 6000, so far it hasn't run out of breath. In fact with your close ratio tranny, you should be able to keep this cam in its power area much easier then me.
trw
trw
Thread Starter
2nd Gear
Joined: Jan 2006
Posts: 2
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Originally Posted by 72 stingray owner
I'm running the XE268H cam in my 72, only have the 76cc heads with larger valves, and pop up pistons...should be fairly close to what you have compression wise (see my background for more info). It doesn't kill your bottom end torque, but it really likes the midsection of the rev range (3000 rpm to 5000 rpm). In fact I'm pretty happy with this cam up to 6000, so far it hasn't run out of breath. In fact with your close ratio tranny, you should be able to keep this cam in its power area much easier then me.
trw
trw
Last edited by mark72vetteroadster; Jan 18, 2006 at 01:44 PM.
Tech Contributor
Joined: Aug 1999
Posts: 14,377
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From: At my Bar drinking and wrenching in Lafayette Colorado
I work on a lot of Vettes with the XE268 during the Tunng for Beer Tours - it's a very common cam. The idle is pretty smooth with a slight lope, and power comes on strong at anything over 1500 rpm. It will keep pulling through redline, and it has tons of low and mid range torque. It's not at all a "big" cam. The 3.08 rear gear will kill your low end no matter what cam you have in it... 
Le Mans Master
Joined: Jul 2005
Posts: 5,752
Likes: 4
From: Austin Texas
Originally Posted by 69autoXr
Seems like the cam would be a good choice, but if you're concerned about low-end then you should ditch the 3.08 gear.
