Are LS1 and LS6 pushrods the same part?

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Mar 18, 2009 | 09:38 AM

Cobra4B

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Are LS1 and LS6 pushrods the same part?

Reason I ask is because the LS6 cam has a slightly smaller base circle from what I've read. I'm going back to stock and collecting parts. Just want to check if LS1 pushrods are the same as the LS6.

Thanks,
Brian

Mar 18, 2009 | 11:00 AM

voda1

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From: Cedar Rapids IA

Same pushrod. GM compensated by using longer valves.

Mar 18, 2009 | 11:36 AM

Cobra4B

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Quote:

Originally Posted by voda1

Same pushrod. GM compensated by using longer valves.

So... if I'm putting a '02-'04 Z06 camshaft in a 2001 Z06 will I have pre-load issues? Does the '01 have the longer valves like the '02-'04 car?

Last edited by Cobra4B; Mar 18, 2009 at 11:43 AM.

Mar 20, 2009 | 10:52 AM

voda1

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01 does not have the longer valves. Some over on LS1Tech run 02 cam with stock length pushrods and have no problems. Don't know if GM decided it needed more preload or a better rocker wipe pattern. Instead of pushrods you could buy some thin 040 Cometic head gaskets to increase the preload as well as the compression ratio.

Mar 20, 2009 | 11:27 AM

Cobra4B

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10-4... I don't want to pull the heads. I'll put it in and see what happens. If I don't have sufficient pre-load I can throw the 7.4s in that I have in there now w/ my G5-X2 cam.

Mar 20, 2009 | 06:34 PM

SteveDoten

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funny, nobody ever mentions this when buying used 243 heads; don't have the spec in front of me for the valve delta

hyd. lifters are cool

Mar 20, 2009 | 07:25 PM

Cobra4B

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Quote:

Originally Posted by Steve Doten

hyd. lifters are cool

Steve... you saying they'll make up for the slight difference?

Mar 22, 2009 | 05:12 PM

SteveDoten

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Quote:

Originally Posted by Cobra4B

Steve... you saying they'll make up for the slight difference?

I'm not a pro motor builder, but it's been done a lot

99% of the time 7.4's work in any Z06

I haven't done 100's of cam swaps like others though............