Cam....I am having some trouble lol. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

78' Silverado · 06-28-2003, 03:24 PM

Ok..I just got a cam that is a Comp Cam with a .268 lift on it. I was talkni to a few people i kno, and they were saying it was kidna low. So i think i wanna a higher lift....with some real good low en d power for good launches...i need to improve my 60ft. ALOT haha. I kno a guy with a truck like mine and he has a .668 lift and said it was great, but since i am not a modded as he, i think i will go with somethig in the high 400s. By the way wat is my stock cam lift?wat is yalls take on this ?

**68 Stepside** · 06-28-2003, 03:57 PM

I think I helped you before?? I don't know if a .268 lift is possible. Are you sure 268 isn't the grind number? Maybe the duration? I'm willing to bet it is. I do know that a Comp Cams 268 grind should be in the mid-high .400's lift-wise.

78' Silverado · 06-28-2003, 06:01 PM

Ok...i may have read it wrong lol...i am typing in the specs sheet..and i'll let youexplain it to me haha.

Intake Exhaust
Valve Adjustment HYD HYD
Gross Valve Lift .454 .454
Duration at
.006 Tappet Lift 268 268
Valve Timing Open Close
At .006 INT 28 BTDC 60 ABDC
EXH 68 BBDC 20 ATDC
These Specs are for Cam Installed--
At 106 Intake Center Line
INTAKE EXHAUST
Duration at .050 218 218
Lobe Lift .3020 .3020
Lobe Separation 110.0

Grind Number CS 268H-10

Ok thats the specs sheet. Can any make any sense on it please for me

**68 Stepside** · 06-28-2003, 06:43 PM

The lift is .454, I can't explain cams in any way that makes sense, so I'll leave that to the pros

78' Silverado · 06-28-2003, 08:56 PM

Please someone do lol. Is a .454 lift good for a stock truck with a full exhasut system and headers? Oh and one more thing...can anyone recommand a good Intake manifold for the 350 as well. It maybe be a taboo for asking but i wnat to hear yalls opinions on brands and wat not u kno. But i will get an intake and put it on with the cam since its gotta come off anyawys lol. I really thx yall for the help.

Tyler

**swervin ervin** · 06-28-2003, 09:32 PM

That looks like the High Energy series. It's a single pattern cam, with 218 degrees of duration @.050" lift on both intake and exhaust. .454" of lift on both sides using 1.5 rockers.

Looks like a fairly decent cam for a mild 350. Comp says it's got a choppy idle. Single pattern cams will have a more choppy idle over dual patterns.

On the intake, a Edelbrock Performer is a decent intake for mild 350.

06-28-2003, 03:24 PM	#1
78' Silverado \/ My Loves \/ Join Date: Mar 2003 Location: Midland,Texas Posts: 462	Cam....I am having some trouble lol. Ok..I just got a cam that is a Comp Cam with a .268 lift on it. I was talkni to a few people i kno, and they were saying it was kidna low. So i think i wanna a higher lift....with some real good low en d power for good launches...i need to improve my 60ft. ALOT haha. I kno a guy with a truck like mine and he has a .668 lift and said it was great, but since i am not a modded as he, i think i will go with somethig in the high 400s. By the way wat is my stock cam lift?wat is yalls take on this ? __________________ 78' Silverado - Blue - (In a Coma) 04' Silverado -Red- 383 Stroker in progress for the 78'!!!

06-28-2003, 03:57 PM	#2
68 Stepside huh? Join Date: May 2000 Location: Washington, Illinois Posts: 5,690	I think I helped you before?? I don't know if a .268 lift is possible. Are you sure 268 isn't the grind number? Maybe the duration? I'm willing to bet it is. I do know that a Comp Cams 268 grind should be in the mid-high .400's lift-wise. __________________ Someday when I'm lonely, Wishing you weren't so far away, Then I will remember Things we said today. RIP El Jay

06-28-2003, 06:01 PM	#3
78' Silverado \/ My Loves \/ Join Date: Mar 2003 Location: Midland,Texas Posts: 462	Ok...i may have read it wrong lol...i am typing in the specs sheet..and i'll let youexplain it to me haha. Intake Exhaust Valve Adjustment HYD HYD Gross Valve Lift .454 .454 Duration at .006 Tappet Lift 268 268 Valve Timing Open Close At .006 INT 28 BTDC 60 ABDC EXH 68 BBDC 20 ATDC These Specs are for Cam Installed-- At 106 Intake Center Line INTAKE EXHAUST Duration at .050 218 218 Lobe Lift .3020 .3020 Lobe Separation 110.0 Grind Number CS 268H-10 Ok thats the specs sheet. Can any make any sense on it please for me __________________ 78' Silverado - Blue - (In a Coma) 04' Silverado -Red- 383 Stroker in progress for the 78'!!!

06-28-2003, 06:43 PM	#4
68 Stepside huh? Join Date: May 2000 Location: Washington, Illinois Posts: 5,690	The lift is .454, I can't explain cams in any way that makes sense, so I'll leave that to the pros __________________ Someday when I'm lonely, Wishing you weren't so far away, Then I will remember Things we said today. RIP El Jay

06-28-2003, 08:56 PM	#5
78' Silverado \/ My Loves \/ Join Date: Mar 2003 Location: Midland,Texas Posts: 462	Please someone do lol. Is a .454 lift good for a stock truck with a full exhasut system and headers? Oh and one more thing...can anyone recommand a good Intake manifold for the 350 as well. It maybe be a taboo for asking but i wnat to hear yalls opinions on brands and wat not u kno. But i will get an intake and put it on with the cam since its gotta come off anyawys lol. I really thx yall for the help. Tyler __________________ 78' Silverado - Blue - (In a Coma) 04' Silverado -Red- 383 Stroker in progress for the 78'!!!

06-28-2003, 09:32 PM	#6
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	That looks like the High Energy series. It's a single pattern cam, with 218 degrees of duration @.050" lift on both intake and exhaust. .454" of lift on both sides using 1.5 rockers. Looks like a fairly decent cam for a mild 350. Comp says it's got a choppy idle. Single pattern cams will have a more choppy idle over dual patterns. On the intake, a Edelbrock Performer is a decent intake for mild 350. __________________ Mike 1985 Chevy C-10



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