need help on pushrods length

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Aug 25, 2010 | 04:49 PM

kj217

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Joined: Aug 2010

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From: Jeddah

need help on pushrods length

i am going to install Patriot Stage II heads along with EG Whiplash cam,,
anyone knows what pushrods length required?

Aug 25, 2010 | 05:30 PM

vettenuts

Team Owner

Joined: Mar 1999

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From: At the beach in little Rhody

You need to buy an adjustable pushrod and measure.

Aug 25, 2010 | 05:34 PM

0Jon@Texas-Speed

Former Vendor

Joined: Jun 2006

Posts: 300

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From: Lubbock Texas

There's a lot of variance in there depending on what lifter, cam base circle, and how the heads are setup. Your best bet is to spend $20 on the pushrod length checker and measure to ensure you put the right pushrod in the motor.

Jon

Aug 25, 2010 | 11:05 PM

kj217

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From: Jeddah

what do you guys think of Patriot Stage II heads,, are they worth it?

Aug 26, 2010 | 08:18 AM

willyfastz

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From: Vanceboro NC

Measure, that's the only way to be sure you have the right pushrods for your engine.

Aug 26, 2010 | 10:29 AM

BLOWNBLUEZ06

Tech Contributor

Joined: Apr 2007

Posts: 10,924

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From: Forney Texas

Quote:

Originally Posted by kj217

what do you guys think of Patriot Stage II heads,, are they worth it?

Good head. Great customer service. $$ per gained horsepower, they're a very good value.

Aug 26, 2010 | 11:32 AM

legman

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Joined: Mar 2007

Posts: 507

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From: Macungie Pa

Quote:

Originally Posted by vettenuts

You need to buy an adjustable pushrod and measure.

My build,

EG Whiplash 1
PRC stg 1 LS6 243's, 64cc
GM mls head gaskets
LS7 lifters
Manley hardened 7.4 pr's
Yella Terra 1.7 rr's

Since I went with after-market rockers, I set valve wipe 1st.

Then, on to pr length. I used the adj checker from Comp. I measured while using the old head gasket, it mic'd out at .050 and I snugged down just the cylinder I was checking. After several checks and re-checks on the intake and exhaust valves, I measured 7.331. I used new lifters and used test springs also so not to collapse lifter. Big meat hooks I have for fingers prevented me from using the length checker as intended. So I did it the long way, remove rockers and set length, re-install and check for free-play at valve. Then I'd remove and check overall length with a set of vernier calipers. It was alot more tedious but there was no way I was getting my fingers in the area to adjust the checker while it was buttoned down. 7.331 and my 7.4 prods measured 7.411 with same caliper, giving me an exact .080 lifter pre-load.

You're gonna love that cam.....