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jvcobra 09-17-2012 02:34 PM

GM Pushrod Length ?
 
I'm looking for some standard push rods for my Gen VI 502. Merc part numbers and lengths are as follows:

Intake (part # 852003) 7.67"
Exhaust (part # 852004) 8.63"

I measured my old push rods and the lengths above are correct. When I was looking for the gm performance parts equivalent I found this part number:

12368081 which is the kit for all 454 and 502 crate engines but the lengths listed are not the same:

Intake 7.575"
Exhaust 8.525"

I know there are different ways of measuring the push rods which may explain the difference but are these the correct push rods or do I have to order directly from merc?

Thanks!

Advantage 575 09-17-2012 07:07 PM


Originally Posted by jvcobra (Post 3778475)
I'm looking for some standard push rods for my Gen VI 502. Merc part numbers and lengths are as follows:

Intake (part # 852003) 7.67"
Exhaust (part # 852004) 8.63"

I measured my old push rods and the lengths above are correct. When I was looking for the gm performance parts equivalent I found this part number:

12368081 which is the kit for all 454 and 502 crate engines but the lengths listed are not the same:

Intake 7.575"
Exhaust 8.525"

I know there are different ways of measuring the push rods which may explain the difference but are these the correct push rods or do I have to order directly from merc?

Thanks!

Roller Cam?

1BIGJIM 09-17-2012 07:30 PM

Let me look tomorrow, I had two sets of brand new take outs.
I know I have one cam, with springs and retainers left if you need a cam.

FIXX 09-17-2012 07:37 PM

fixx
 

Originally Posted by jvcobra (Post 3778475)
I'm looking for some standard push rods for my Gen VI 502. Merc part numbers and lengths are as follows:

Intake (part # 852003) 7.67"
Exhaust (part # 852004) 8.63"

I measured my old push rods and the lengths above are correct. When I was looking for the gm performance parts equivalent I found this part number:

12368081 which is the kit for all 454 and 502 crate engines but the lengths listed are not the same:

Intake 7.575"
Exhaust 8.525"

I know there are different ways of measuring the push rods which may explain the difference but are these the correct push rods or do I have to order directly from merc?

Thanks!

after rebuild?? and are the engines stock? did you mill the heads?

jvcobra 09-18-2012 07:27 AM

Yes, Gen VI roller cam. Engine is currently being rebuilt, heads haven't been milled.

jvcobra 09-26-2012 10:45 AM

Yes, the GM Performance pushrod number listed above are the correct length. Got them yesterday and measured them up. Hope this helps someone else.

articfriends 09-26-2012 01:24 PM

Your almost new intake went out UPS yesterday so you should be seeing it by thurs/fri, Smitty


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