which heads should i use on my 427 ls1 motor
09-07-2005, 04:06 PM
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which heads should i use on my 427 ls1 motor hey guys i am going to biuld a 427 ls1 this winter for my 02 ws6 and was wondering which heads i should use? how are the patriot heads? i was looking at there pricing and there prices are very reasonable for complete heads with nice rockers and everything, but im not too familiar with which company makes the best heads and that stage i should go with and all that. when i look at the stage i get confused sometimes as to which to go with. i would really appreciate any help. thanks again
Jon
Jon
09-07-2005, 04:22 PM
#2
If you have the money AFR 225's are your best bet with a 427 ls1. They are top notch. Not saying patriot heads are not nice, they are top quality as well. I hang out with a bunch of ls1 guys and both my buddy with a 402 and my buddy with a 408 both went with the AFR's after a long debate over whether to go with patriot, prc, or afr heads. The biggest numbers have come with the afrs so i would check them out first. All in how much you want to spend though but i figure with a 427 ls1 you will want the best. Good luck with whatever you choose though!
09-07-2005, 05:18 PM
#4
are you keeping the same bore? or did you bore to a 427? if bored to a 427 (sleeved) you could consider teh LS7 heads and intake... each head will be about 550-600 depending on retailer. the LS7 intake should run about 250ish just food for thought.
09-07-2005, 05:28 PM
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thanks for all the info guys, yes i will be resleeving my ls1 block. i will have to check out the afr heads i have heard alot about them and i for sure will want everything the best so i will look at them tonight. thanks guys, im sure i will be abck with more questions soon.
Jon
Jon
09-07-2005, 05:50 PM
#7
That's an easy one to answer. The new high port LS7 heads with matching intake are available now at www.gmpartsdirect.com
Head part #12578450 $515.35
Intake part #12569011 $251.48
The new rockers and valves will soon be available also. Look in the LS2/LS7 section for part numbers.
Head part #12578450 $515.35
Intake part #12569011 $251.48
The new rockers and valves will soon be available also. Look in the LS2/LS7 section for part numbers.
Last edited by gollum; 09-07-2005 at 05:58 PM.
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09-07-2005, 06:52 PM
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so you guys think that the new ls7 heads would be better than the patriot heads or afr heads? i havent looked at the ls7 heads yet so i dont know much about them. ill have to check them out. thanks guys.
Jon
Jon
09-08-2005, 03:35 AM
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Originally Posted by 98transguy
if u have the money go to the sponsor et performance and i am sure they can hook u up with one of there big flowing heads
Craig @ ETPerformance
E-mail Address(es):
craig@etheads.com
09-08-2005, 04:19 AM
#17
Originally Posted by gollum
That's an easy one to answer. The new high port LS7 heads with matching intake are available now at www.gmpartsdirect.com
Head part #12578450 $515.35
Intake part #12569011 $251.48
The new rockers and valves will soon be available also. Look in the LS2/LS7 section for part numbers.
Head part #12578450 $515.35
Intake part #12569011 $251.48
The new rockers and valves will soon be available also. Look in the LS2/LS7 section for part numbers.
someone explain it to me....I take it they are bare castings and you need all the associated valvetrain pieces including the LS7 specific rockers.
Also quick question, how did you get the flow information on the ported FAST and the LS7 intakes? I seriously doubt that the LS7 is even close to the FAST.
09-08-2005, 07:36 AM
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hey guys, thanks for all the different head choices. i will look into them all before i decide which ones to go with, one other question, what did u mean by i would need a big bore inorder to use the ls7 heads? i will probably be using the lunati 427 rotating assembly. would that give me abig enough bore for the ls7 heads? thanks guys
Jon
Jon
09-08-2005, 08:47 AM
#20
Originally Posted by Spinmonster
My vote would be for the LQ9 TEA stage 3's vs. the AFR's anyday. About the same $$$ but vastly different flow numbers across the board.
__________________
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.