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Can I use my stock length push rods with this cam?

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Old Sep 26, 2006 | 10:43 PM
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Default Can I use my stock length push rods with this cam?

I have a Comp Cams 216-220 .525/.532 114 LSA
Can I use my stock length pushrods with my stock lifters and rockers?
I am putting in this cam and Z06 Springs, do I need anything else?
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Old Sep 26, 2006 | 11:16 PM
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you should be fine with stockers and that cam... just check the base circle of the lobes. I am almost positive that Comp uses a stock size circle on all their lobes. someone correct me if I'm wrong...
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Old Sep 27, 2006 | 12:10 AM
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Check for yourself but my understanding is comps base is .020 less than stock.comps 7.4 push rod will make you flush,stock is 7.380.like I said check comp reps
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Old Sep 27, 2006 | 12:33 AM
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I thought stock length was 7.4... or I missed something somewhere...
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Old Sep 27, 2006 | 02:52 PM
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stock length is just shy of 7.4. not sure on the exact number
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Old Sep 27, 2006 | 03:28 PM
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I was using the stock lenght push-rods on my 04 crew cab when I was running that cam. It was just fine, no problems whatsoevar.
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Old Sep 27, 2006 | 08:49 PM
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Originally Posted by gonzo 6.0
Check for yourself but my understanding is comps base is .020 less than stock.comps 7.4 push rod will make you flush,stock is 7.380.like I said check comp reps
This sounds about right...from what I've learned here, the stockers are 7.380 while the Comps are a true 7.4...and the base circle on that cam is smaller. The base circle on my baby cam is smaller than stock. You'll probably be fine, just as L33Z71 was, as the lifter should make up the difference, but personally, I'd recommend going with some hardened pushrods for some insurance anyway. The stockers weren't designed for performance, and will flex at higher RPM's.

You'll be fine with the stock rockers and lifters though
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Old Sep 28, 2006 | 09:08 AM
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Originally Posted by budhayes3
This sounds about right...from what I've learned here, the stockers are 7.380 while the Comps are a true 7.4...and the base circle on that cam is smaller. The base circle on my baby cam is smaller than stock. You'll probably be fine, just as L33Z71 was, as the lifter should make up the difference, but personally, I'd recommend going with some hardened pushrods for some insurance anyway. The stockers weren't designed for performance, and will flex at higher RPM's.

You'll be fine with the stock rockers and lifters though


Oh yeah, I was just using stock length pushrods. I did upgrade to hardened chromoly ones though.
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Old Sep 28, 2006 | 09:14 AM
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I got a wholesale deal yesterday on a set of 7.4 one piece moly rods. A big time push rod manufacturing company is in my town.They dont do retail but made contact with the right guy that took care of me.
He says they produce 2000 push rods a day.I have a cam in waiting that I may pull the trigger on this weekend.There goes my warrenty.
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Old Sep 28, 2006 | 09:29 AM
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I 100% plan on going to hardend push rods, I just didn't know the size to get. I was told I can use my stock length if I have not shaved my heads.
L33Z71 how did you like the cam, did it give you a great deal of power?
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