Are 227 cc intake runners too big?
#1
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Are 227 cc intake runners too big?
Are 227cc intake runners too big for a stock cube LS1? I'm really leaning towards patriot for my 243 heads based on cost..... and other information you guys can give me would be great. I also plan to run a ported 92mm intake manifold
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That is what stock LS6 heads are (approx) Usually if you reduce the intake runner size its in an effort t build more TQ as the velocity is kept high. I love my patriots, they make good power
#6
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Forget what you think you know about big heads on small engines when you read this:
https://ls1tech.com/forums/dynamomet...p-446rwtq.html
https://ls1tech.com/forums/dynamomet...p-446rwtq.html
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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.
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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.
#7
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Forget what you think you know about big heads on small engines when you read this:
https://ls1tech.com/forums/dynamomet...p-446rwtq.html
https://ls1tech.com/forums/dynamomet...p-446rwtq.html
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#9
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Search the dyno section very careful what brand you choose. You might check the Precision Race Components LS6 heads out also. A quick search & I think you'll find for the money they're the best cylinder head available.
http://www.texas-speed.com/shop/item...d=134&catid=20
or
http://www.texas-speed.com/shop/item...d=134&catid=20
Both cylinder heads are available custom milled free of charge & PRC heads have a flow guarantee, if your not 100% happy with the flow you can return them for a absolute refund.
http://www.texas-speed.com/shop/item...d=134&catid=20
or
http://www.texas-speed.com/shop/item...d=134&catid=20
Both cylinder heads are available custom milled free of charge & PRC heads have a flow guarantee, if your not 100% happy with the flow you can return them for a absolute refund.
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2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
Jason
Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
#10
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IMO apply the 92/92 $$ towards really good heads. Granted it will be a bit more coin, but heads are the core of any successful build.
Take it one step at a time and buy the best heads your money can get.
Take it one step at a time and buy the best heads your money can get.
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Where does the PTV issue occur? When the combustion chambers are milled (I'm looking @ 59 cc). Also, how does the effect cam selection? This is the cam I'm looking into (215/230 .629/.592 117) and I'm not ASE certified so I'm really not sure it the lift it high....
#14
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To add to that, measure from about 10 before and after TDC....not just 10 before and 10 after. Those in-between spots are important.
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Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!