What Valve Springs for 7200 RPM shifts
04-27-2007, 10:48 AM
#1
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What Valve Springs for 7200 RPM shifts I am running a pretty Big Cam on my new Setup. I am wanting to set my shifts on the 1-2 shift at 7200 RPMs & my 2-3 Shift to 7500 RPMs
Do they make a Valve spring that can handle these High RPM Shifts. I have Comp R Lifters & Aftermarket Pushrods..
I heard the Extreme Patriot Gold Valve Springs are good up to 660Lift..... Will these handle the High RPM Shifts & if not what do you suggest.
Thanks Guys
Seb
Do they make a Valve spring that can handle these High RPM Shifts. I have Comp R Lifters & Aftermarket Pushrods..
I heard the Extreme Patriot Gold Valve Springs are good up to 660Lift..... Will these handle the High RPM Shifts & if not what do you suggest.
Thanks Guys
Seb
04-27-2007, 11:37 AM
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Originally Posted by radkon
Are you sure your new cam will still be making power at that RPM? No sense in spining it that high if the power falls aff at 6700.
The cam should pull to 7200 RPMs pretty easy from what I hear. It is going in to a Forged Piston & Rod & ARP Bolt Motor Built 347, With TEA 1.5 Heads & FAST Intake. The cam Spec are simular to 248-252 & 650+ Lift on 112 Lobe Sep....
04-27-2007, 11:51 AM
#4
The Patriot extreme springs will handle that rpm provided you shim them to within .050" of coil bind. Some head porters recommending shimming them as tight as .030", but .050" is certainly acceptable. This will eliminate spring surge and extend spring life (not to mention increase rpm potential). Make sure you're also running Ti retainers. Above 7,000 rpm, light weight is critical.
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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.
04-27-2007, 07:13 PM
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Manley Nextek You might want to look at Manley Nextek dual springs. They also make Ti retainers.
When I had my heads done, I saw lots of Manley products being used.
Bob K.
When I had my heads done, I saw lots of Manley products being used.
Bob K.
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04-27-2007, 08:35 PM
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Originally Posted by RGKSR
You might want to look at Manley Nextek dual springs. They also make Ti retainers.
When I had my heads done, I saw lots of Manley products being used.
Bob K.
When I had my heads done, I saw lots of Manley products being used.
Bob K.
I'm running Manley duals myself....
