Are 227 cc intake runners too big?
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
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
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
__________________
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
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
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
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
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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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.
__________________
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
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
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
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.
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....
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.
__________________
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
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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!
