Pushrod length with stock cam and ZO6 heads.
12-14-2005, 07:25 PM
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Pushrod length with stock cam and ZO6 heads. As the title states, I am going to install stock 2002 Z06 heads on my 2004 gto. I am not going to do the cam right away but was leaning towards something like the TR224 on a 114LSA. Anyway, I know that the Z06 sodium filled valves are .6mm longer than the stock ls1 valves to make up for the fact that ZO6 cam has a smaller base circle, in order to maintain proper valve preload. Could I make it for a few months with 7.40 pushrods, or should I get 7.35/7.375?? I was planning on replacing the stock pushrods when I swap the cam, I have not talked to Thunder racing, but I would assume that the TR224 would be closer in base circle to the ls6 cam than the ls1. By the way, I am doing the head install myself so, there is no labor cost associated, and am set on installing just heads and headers now. Any advice would be greatly appreciated. Thanks in advance. 
12-14-2005, 07:47 PM
#2
.6mm is .0236". Your stock lifters have enough pre-load play that you can get by with stock length pushrods will be OK, but if you were going to live with the stock cam forever, I'd probably recommend getting 7.375" chrome moly pushrods to keep the geometry just like stock.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
