Cam Recommendations Anyone?
Thread Starter
Burning Brakes
Joined: Jul 2006
Posts: 1,047
Likes: 12
From: SoCal
Cam Recommendations Anyone?
Here's my setup:
383 stroker
Edelbrock aluminum 64cc Performer RPM heads
Edelbrock Air Gap dual quad manifold
Two Edelbrock Thunder Series 500 cfm carbs
1.5:1 roller rockers
Comp Cams roller lifters
Approx. compression ratio 10.5:1
M20 4-speed tranny
Standard/stock rear-end ratio (3.36:1 ???)
No air conditioning
No power brakes
The speed shop sold me a Comp XR276HR, which is way too wimpy (and getting lots of pinging/detonation). Before I rebuilt the 350 into a 383 (it's a ZZ3 4-bolt block), I was running a Chet Herbert hydraulic roller cam (243/243 @ 0.050, 558/558 lift, 110 lobe sep) which worked well (although I won't be using it anymore due to reports of premature cam failure).
Do you guys think that a Comp XR288HR (236/242 @ 0.050, 520/540 lift, 110 lobe sep) would be a good match for my setup?
Any other recommendations?
Thanks much!!!
383 stroker
Edelbrock aluminum 64cc Performer RPM heads
Edelbrock Air Gap dual quad manifold
Two Edelbrock Thunder Series 500 cfm carbs
1.5:1 roller rockers
Comp Cams roller lifters
Approx. compression ratio 10.5:1
M20 4-speed tranny
Standard/stock rear-end ratio (3.36:1 ???)
No air conditioning
No power brakes
The speed shop sold me a Comp XR276HR, which is way too wimpy (and getting lots of pinging/detonation). Before I rebuilt the 350 into a 383 (it's a ZZ3 4-bolt block), I was running a Chet Herbert hydraulic roller cam (243/243 @ 0.050, 558/558 lift, 110 lobe sep) which worked well (although I won't be using it anymore due to reports of premature cam failure).
Do you guys think that a Comp XR288HR (236/242 @ 0.050, 520/540 lift, 110 lobe sep) would be a good match for my setup?
Any other recommendations?
Thanks much!!!
Last edited by VCuomo; Aug 24, 2006 at 11:18 PM.
Le Mans Master
Joined: Apr 2006
Posts: 5,403
Likes: 95
I would look for a cam with more lift, the 520 lift on the
comp cams intake is a little on the wimpy side.
Crower Cams high lift series
hydraulic roller part # 00471
.050 int. dur.236
.050 ex. dur. 240
adv. int. dur. 286
adv. ex. dur. 292
LSA 110
lift int. 555
lift ex. 559
power range for 383-400, 2400-5900
Crower cams phone # 619-661-6477 Fax # 619-661-6466
comp cams intake is a little on the wimpy side.
Crower Cams high lift series
hydraulic roller part # 00471
.050 int. dur.236
.050 ex. dur. 240
adv. int. dur. 286
adv. ex. dur. 292
LSA 110
lift int. 555
lift ex. 559
power range for 383-400, 2400-5900
Crower cams phone # 619-661-6477 Fax # 619-661-6466
Last edited by Little Mouse; Aug 25, 2006 at 02:33 AM.
Thread Starter
Burning Brakes
Joined: Jul 2006
Posts: 1,047
Likes: 12
From: SoCal
What the heck, I decided to call Comp and see what they suggest.
They said I should use their Magnum line instead of the Xtreme Energy line (XE's apparently have fast open/close ramp times which they said are worse for detonation than the Magnums). They suggested their Magnum 286HR (duration @ 0.050 is 230/230, lift is 560/560, 110 LSA, power range is 2500-6000).
Sounds pretty close to what you've suggested, Little Mouse!
They said I should use their Magnum line instead of the Xtreme Energy line (XE's apparently have fast open/close ramp times which they said are worse for detonation than the Magnums). They suggested their Magnum 286HR (duration @ 0.050 is 230/230, lift is 560/560, 110 LSA, power range is 2500-6000).
Sounds pretty close to what you've suggested, Little Mouse!
Last edited by VCuomo; Aug 25, 2006 at 03:51 PM.
Le Mans Master
Joined: Apr 2006
Posts: 5,403
Likes: 95
Originally Posted by VCuomo
What the heck, I decided to call Comp and see what they suggest.
They said I should use their Magnum line instead of the Xtreme Energy line (XE's apparently have fast open/close ramp times which they said are worse for detonation than the Magnums). They suggested their Magnum 286HR (duration @ 0.050 is 230/230, lift is 560/560, 110 LSA, power range is 2500-6000).
Sounds pretty close to what you've suggested, Little Mouse!
They said I should use their Magnum line instead of the Xtreme Energy line (XE's apparently have fast open/close ramp times which they said are worse for detonation than the Magnums). They suggested their Magnum 286HR (duration @ 0.050 is 230/230, lift is 560/560, 110 LSA, power range is 2500-6000).
Sounds pretty close to what you've suggested, Little Mouse!
Le Mans Master
Joined: Apr 2006
Posts: 5,403
Likes: 95
Originally Posted by VCuomo
Here's my setup:
383 stroker
Edelbrock aluminum 64cc Performer RPM heads
Edelbrock Air Gap dual quad manifold
Two Edelbrock Thunder Series 500 cfm carbs
1.5:1 roller rockers
Comp Cams roller lifters
Approx. compression ratio 10.5:1
M20 4-speed tranny
Standard/stock rear-end ratio (3.36:1 ???)
No air conditioning
No power brakes
The speed shop sold me a Comp XR276HR, which is way too wimpy (and getting lots of pinging/detonation). Before I rebuilt the 350 into a 383 (it's a ZZ3 4-bolt block), I was running a Chet Herbert hydraulic roller cam (243/243 @ 0.050, 558/558 lift, 110 lobe sep) which worked well (although I won't be using it anymore due to reports of premature cam failure).
Do you guys think that a Comp XR288HR (236/242 @ 0.050, 520/540 lift, 110 lobe sep) would be a good match for my setup?
Any other recommendations?
Thanks much!!!
383 stroker
Edelbrock aluminum 64cc Performer RPM heads
Edelbrock Air Gap dual quad manifold
Two Edelbrock Thunder Series 500 cfm carbs
1.5:1 roller rockers
Comp Cams roller lifters
Approx. compression ratio 10.5:1
M20 4-speed tranny
Standard/stock rear-end ratio (3.36:1 ???)
No air conditioning
No power brakes
The speed shop sold me a Comp XR276HR, which is way too wimpy (and getting lots of pinging/detonation). Before I rebuilt the 350 into a 383 (it's a ZZ3 4-bolt block), I was running a Chet Herbert hydraulic roller cam (243/243 @ 0.050, 558/558 lift, 110 lobe sep) which worked well (although I won't be using it anymore due to reports of premature cam failure).
Do you guys think that a Comp XR288HR (236/242 @ 0.050, 520/540 lift, 110 lobe sep) would be a good match for my setup?
Any other recommendations?
Thanks much!!!
.050 duration figures closer to the crower cam then the comp
magnum. You may want to look at that as a plus for the crower
if you liked the power range on the chet herbert. If its between
the two comp cams the lift of the magnum would get my vote.
The power monger that I'am would pick the crower for the xtra
duration even if I had to change gearing when I could afford it.
Thread Starter
Burning Brakes
Joined: Jul 2006
Posts: 1,047
Likes: 12
From: SoCal
I noticed that the Crower Cams catalog says "Small base circle cams available for 383 and 406."
Do I have to use a "small base circle cam" for a 383, or is it optional?
Thanks!
Do I have to use a "small base circle cam" for a 383, or is it optional?
Thanks!
Last edited by VCuomo; Aug 25, 2006 at 10:40 PM.
Le Mans Master
Joined: Apr 2006
Posts: 5,403
Likes: 95
The chet herbert cam had high lift was it a small base circle cam??
are the rod bolt heads ground down, do you have the rods that are
called stroker rods?? Crower says just add an S on the end of the
part # for a small base circle cam. You can play it safe and get the
small base circle.
are the rod bolt heads ground down, do you have the rods that are
called stroker rods?? Crower says just add an S on the end of the
part # for a small base circle cam. You can play it safe and get the
small base circle.
Last edited by Little Mouse; Aug 26, 2006 at 02:29 AM.
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Thread Starter
Burning Brakes
Joined: Jul 2006
Posts: 1,047
Likes: 12
From: SoCal
Don't know about the Herbert cam (I doubt it was a small base circle cam, and I think Herbert is no longer in business).
Don't know about the rod bolts or if the rods are "stroker rods" - I can ask the speed shop on Monday.
Don't know about the rod bolts or if the rods are "stroker rods" - I can ask the speed shop on Monday.
Safety Car
Joined: Oct 2004
Posts: 3,920
Likes: 731
From: Youngstown Ohio
Originally Posted by VCuomo
What the heck, I decided to call Comp and see what they suggest.
They said I should use their Magnum line instead of the Xtreme Energy line (XE's apparently have fast open/close ramp times which they said are worse for detonation than the Magnums). They suggested their Magnum 286HR (duration @ 0.050 is 230/230, lift is 560/560, 110 LSA, power range is 2500-6000).
Sounds pretty close to what you've suggested, Little Mouse!
They said I should use their Magnum line instead of the Xtreme Energy line (XE's apparently have fast open/close ramp times which they said are worse for detonation than the Magnums). They suggested their Magnum 286HR (duration @ 0.050 is 230/230, lift is 560/560, 110 LSA, power range is 2500-6000).
Sounds pretty close to what you've suggested, Little Mouse!
Race Director
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
Originally Posted by VCuomo
Here's my setup:
383 stroker
Edelbrock aluminum 64cc Performer RPM heads
Edelbrock Air Gap dual quad manifold
Two Edelbrock Thunder Series 500 cfm carbs
1.5:1 roller rockers
Comp Cams roller lifters
Approx. compression ratio 10.5:1
M20 4-speed tranny
Standard/stock rear-end ratio (3.36:1 ???)
No air conditioning
No power brakes
The speed shop sold me a Comp XR276HR, which is way too wimpy (and getting lots of pinging/detonation). Before I rebuilt the 350 into a 383 (it's a ZZ3 4-bolt block), I was running a Chet Herbert hydraulic roller cam (243/243 @ 0.050, 558/558 lift, 110 lobe sep) which worked well (although I won't be using it anymore due to reports of premature cam failure).
Do you guys think that a Comp XR288HR (236/242 @ 0.050, 520/540 lift, 110 lobe sep) would be a good match for my setup?
Any other recommendations?
Thanks much!!!
383 stroker
Edelbrock aluminum 64cc Performer RPM heads
Edelbrock Air Gap dual quad manifold
Two Edelbrock Thunder Series 500 cfm carbs
1.5:1 roller rockers
Comp Cams roller lifters
Approx. compression ratio 10.5:1
M20 4-speed tranny
Standard/stock rear-end ratio (3.36:1 ???)
No air conditioning
No power brakes
The speed shop sold me a Comp XR276HR, which is way too wimpy (and getting lots of pinging/detonation). Before I rebuilt the 350 into a 383 (it's a ZZ3 4-bolt block), I was running a Chet Herbert hydraulic roller cam (243/243 @ 0.050, 558/558 lift, 110 lobe sep) which worked well (although I won't be using it anymore due to reports of premature cam failure).
Do you guys think that a Comp XR288HR (236/242 @ 0.050, 520/540 lift, 110 lobe sep) would be a good match for my setup?
Any other recommendations?
Thanks much!!!
Last edited by 63mako; Aug 27, 2006 at 11:42 AM.
