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Camshaft by George
#1
Hey I was just wondering if anyone has tried the custom cam grind recommended by George Pence? I’m having my motor rebuilt and I want to try this and most of his mods to make the engine more reliable. Thanks!

run_horse Run Horse Run!
John 72 Q Code
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#2
So this is the camshaft I’m thinking about. George says he believes this is the best all around performance hydraulic flat tappet street cam.
Bullet Camshafts
Adv. duration 277/287
Duration @ .50 lift 228/235
Gross valve lift @1.73 rocker arm .580/.585
ICL 111*
LSA 114*
Seated overlap 54*

This cam is for my 72 Q code 351 .30 over w/4v 10:1 quench heads, flat top forged pistons, Blue Thunder intake, Quick Fuel 735 HS carb w/vacuum secondaries, stock manifolds, c6 trans & 3.50 trutrac rear gear. This car is driven for go and show. Not a daily driver so I want to be more on the performance side, but I do want it to have good street manners also. So in other words, I want it all! Lol
George penned this for a very similar build to mine, so it should be pretty close. He calls it the Bullet Cobra Jet Cam.
Any thoughts about it would be appreciated. I’m still learning about the Cleveland and open to suggestions.
I’m actually thinking about something close to this grind for a hydraulic roller cam.

run_horse Run Horse Run!
John 72 Q Code
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#3
Yes, that should be a good cam for what your intended use is. Should have decent low end, idle, and vacuum. It should work fine with your Q code compression ratio. Your rear-end will put it right in the highway cruise range for it.

The only thing, you'll probably want to get a torque converter with a stall in the 2,200 to 2,500 rpm range.



“If you can't explain it simply, you don't understand it well enough.”
--Albert Einstein
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#4
(11-30-2018, 06:53 PM)Don C Wrote: Yes, that should be a good cam for what your intended use is. Should have decent low end, idle, and vacuum. It should work fine with your Q code compression ratio. Your rear-end will put it right in the highway cruise range for it.

The only thing, you'll probably want to get a torque converter with a stall in the 2,200 to 2,500 rpm range.
Oh, that’s lower than the one I have. Pretty sure the Q codes were 2800-3000 stall?

run_horse Run Horse Run!
John 72 Q Code
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#5
(11-30-2018, 07:06 PM)jpaz Wrote:
(11-30-2018, 06:53 PM)Don C Wrote: Yes, that should be a good cam for what your intended use is. Should have decent low end, idle, and vacuum. It should work fine with your Q code compression ratio. Your rear-end will put it right in the highway cruise range for it.

The only thing, you'll probably want to get a torque converter with a stall in the 2,200 to 2,500 rpm range.
Oh, that’s lower than the one I have. Pretty sure the Q codes were 2800-3000 stall?

I was just going to say that as well... q code cars came with 3000 rpm stall converter

Alex
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#6
Hi John,

Here is the torque converter specs for a stock 73 Q code, doubt the 72 is much different.


[Image: trans-specs-torque-converter-73.jpg]

Jeff
1972 Q Code Convertible
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#7
(11-30-2018, 08:40 PM)jeff8877 Wrote: Hi John,

Here is the torque converter specs for a stock 73 Q code, doubt the 72 is much different.


[Image: trans-specs-torque-converter-73.jpg]
Thanks Jeff, but pretty sure 72’s are 2850. I’ll find out for sure.

run_horse Run Horse Run!
John 72 Q Code
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#8
Thanks for the clarification, Jeff. It's higher than I thought, I was thinking they were in the 1600 to 1800 range. 2200 to 2400 should be just right for him.



“If you can't explain it simply, you don't understand it well enough.”
--Albert Einstein
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#9
(11-30-2018, 09:02 PM)Don C Wrote: Thanks for the clarification, Jeff. It's higher than I thought, I was thinking they were in the 1600 to 1800 range. 2200 to 2400 should be just right for him.
I found a thread by seculf that says stock for 72 is 2850, but I don’t know how to post it from my iPad.

run_horse Run Horse Run!
John 72 Q Code
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#10
Higher is OK, just wouldn't want a lower stall speed. It's just desirable to have the stall speed at or a little less than the highway cruise RPM.



“If you can't explain it simply, you don't understand it well enough.”
--Albert Einstein
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