cam/pushrod/head questions

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Nov 23, 2013 | 12:49 AM

lilaaron233333

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From: West Covina CA

cam/pushrod/head questions

So I got my stock ls2 wit ls3 heads. Question is are ls3 heads the same dimension wise as ls2s. I know the intake ports are square an the rockers are off set n all. But this is why I ask.

When I had stock cam with the stock block and ls3 heads I was using 7.4 pushrods. Now the base circle on a stock ls2 cam is 1.552 and the new cam the base circle is 1.052 So if the ls2 and ls3 in stock form use the same size push rod "7.4" then. could I take 1.552-1.052= 0.500 then thats 50 thousandths right??? so im thinking I would need a 7.450 pushrod correct????

Last edited by lilaaron233333; Nov 23, 2013 at 02:38 AM.

Nov 26, 2013 | 09:48 AM

filmjay

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From: Tennessee

I can't speak for the LS2, but my stock deck/stock headed LS3 DID use 7.450 pushrods when I swapped cams/springs.

I'm doing CNC LS3 heads (milled .020, 67cc), so I have to run shorter 7.4's now...my TSP 7.450 hardened pushrods are for sale if you want them...$80/shipped...also a set of fresh PRC .675 EHT duals springs...

Nov 27, 2013 | 11:48 AM

lilaaron233333

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From: West Covina CA

Quote:

Originally Posted by filmjay

I got a pushrod checker an foind out I needed 7.425s an there here an went in ready. I already have springs but thanks. Butni do see you need 7.4s the one thay came out of my motor woth just around 1k are fir sale 95 shipped and arw in GREAT shape.

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