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LS7 valves/springs/pushrod length??

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Old 10-11-2005, 08:32 PM
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Default LS7 valves/springs/pushrod length??

Has anyone got any idea's yet on stainless valves, and 'good' springs that will allow me to run a big cam? I believe the installed height is 1.980 vs 1.800 in the ls1/6 heads. The valves are 2.20 x 1.610 I believe, but are also longer.

Also, any guesses as to pushrod length?
Old 10-12-2005, 09:08 AM
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call Cary or Craig at ET Performance
Old 10-12-2005, 09:39 AM
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Let us know what you find out! Thanks Greg.
Old 10-12-2005, 04:05 PM
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I Work At A Chevy Dealership And Called An Enginer At Detroit And Was Told That The Push Rod Length Is The Same As An Ls1
Old 10-12-2005, 04:26 PM
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Hmmm, I was told different. The installed height is different. The valves are longer. The intakes are offset. Dunno, I'd be surprised.
Old 10-12-2005, 07:49 PM
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I was talking to him today and i was told they are the same length. The offset is done in the rocker so the push rod and lifter are in the same position as any Gen 3- Gen 4.
He is calling me back tommorow and i will double check. Also the reason he is calling me back is to hopefully give me some flow #s on the heads.
Old 10-13-2005, 02:02 PM
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Cool, well let us know on the flow numbers.

I will have to mill .048 probably to get CR where I want it...so the p-rods may be 7.350 then.
Old 10-31-2005, 02:20 PM
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Part number for the LS7 pushrod 12593344

Longer than ls1/6
Old 10-31-2005, 03:44 PM
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Whats the length on the LS7 pushrods? Might be worthwhile to buy some aftermarket hardened rods.
Old 10-31-2005, 10:27 PM
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Ill measure a pushrod tomorrow guys They are different.
Old 11-03-2005, 04:30 PM
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they are about 7.7x in length

I cant find my 12" dial caliper. Its hiding from me
Old 11-03-2005, 05:34 PM
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Originally Posted by Badls6SS
I was talking to him today and i was told they are the same length. The offset is done in the rocker so the push rod and lifter are in the same position as any Gen 3- Gen 4.
He is calling me back tommorow and i will double check. Also the reason he is calling me back is to hopefully give me some flow #s on the heads.
See if you can get the weight of the titanium valves from him as well.
Old 11-03-2005, 08:14 PM
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According to More Performance new 3/8 OD Pushrod is 7.820 Long



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