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will my prc 227's do well on a 427 ls3?

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Old 11-13-2012, 10:44 PM
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Default will my prc 227's do well on a 427 ls3?

sup guys , i have the mods in my sig , i am saving for a na build and looking at the mast ls3 427, tsp 429 ls3 and the thompson ls3 427 , hke as well

i have the prc 227 heads on right now and wanted to use them in the build , do you guys think they will be enough to hit 550 rwhp ?

ps im also going to do another Pat G cam as well
Old 11-13-2012, 10:46 PM
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ps i know my headers are too small , any suggestions on new size? 17/8ths or 2inch?
Old 11-14-2012, 05:28 AM
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2" kooks and a set of TFS 245's you'll make 550 or better!
Port match that FAST too! Good luck bud, looks like a Sweeet build!
Oh and for a cam, just call Comp ask for Gabe and he'll spec you out a cam for free! After you decide on the heads though.
Old 11-14-2012, 11:51 AM
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Originally Posted by litle88
2" kooks and a set of TFS 245's you'll make 550 or better!
Port match that FAST too! Good luck bud, looks like a Sweeet build!
Oh and for a cam, just call Comp ask for Gabe and he'll spec you out a cam for free! After you decide on the heads though.
thanks man

thanks for the advice , what do you think of those tsp Ls7 small bore heads ?
Old 11-14-2012, 12:29 PM
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i vote keep what you got. seen plenty 225cc heads on 400+in strokers. i have a few friends who have 243 heads on 427s...they do 520-530.

plus cathedral heads will get you better bottom end numbers....

and if you already got a cathedral 102 fast...keep that setup...
Old 11-14-2012, 12:36 PM
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Originally Posted by zacht
i vote keep what you got. seen plenty 225cc heads on 400+in strokers. i have a few friends who have 243 heads on 427s...they do 520-530.

plus cathedral heads will get you better bottom end numbers....

and if you already got a cathedral 102 fast...keep that setup...
good to know , its killing me just to save up for the 427 and install much less another 2grand for heads , thanks bro
Old 11-15-2012, 02:15 PM
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You'll still make some decent numbers with that setup, but you could always sell your topend and put the $ towards a different setup if you wanted to. Good luck with your build...
Old 11-15-2012, 02:29 PM
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The 227 head will do fine on that application. keep in mind they still move awesome air compared to ALOT of major companies 235+cc runners. That being said if you upgrade the 247 PRC, or the all new PRC 260cc LS3 head that moves nearly 380cfm is a great option.

If you have someone wanting to buy your 227s then by all means upgrade, but without a doubt the 227 head will perform very well on that application.
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Old 11-15-2012, 07:13 PM
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Originally Posted by Jason 98 TA
The 227 head will do fine on that application. keep in mind they still move awesome air compared to ALOT of major companies 235+cc runners. That being said if you upgrade the 247 PRC, or the all new PRC 260cc LS3 head that moves nearly 380cfm is a great option.
DAMN. It takes a little longer than expected for the SB LS7s, then you build 250/255/260 LS3s. You guys are on a roll. I cain't wait ubtil those LS3 strokers w/ the new PRCs get built and dynode.
Old 11-15-2012, 11:41 PM
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Originally Posted by Jason 98 TA
The 227 head will do fine on that application. keep in mind they still move awesome air compared to ALOT of major companies 235+cc runners. That being said if you upgrade the 247 PRC, or the all new PRC 260cc LS3 head that moves nearly 380cfm is a great option.

If you have someone wanting to buy your 227s then by all means upgrade, but without a doubt the 227 head will perform very well on that application.
those sound awesome
Old 11-17-2012, 05:52 AM
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FWIW: I make 576/530 with a little 234-242 cam in my 427 with West Coast Cylinder Heads (proheads.com) Stage 3 L92 heads. The car is extremely mild and well behaved.

A "little" info on the build here:

https://ls1tech.com/forums/generatio...b-c-d-e-f.html
Old 11-17-2012, 11:08 AM
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Originally Posted by WKMCD
FWIW: I make 576/530 with a little 234-242 cam in my 427 with West Coast Cylinder Heads (proheads.com) Stage 3 L92 heads. The car is extremely mild and well behaved.

A "little" info on the build here:

https://ls1tech.com/forums/generatio...b-c-d-e-f.html
read the whole thread , what an awesome build , in all honesty i didnt quite understand all the tech but i learned some great info , thanks for sharing
Old 11-17-2012, 01:48 PM
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Originally Posted by Knight-Z06
read the whole thread , what an awesome build , in all honesty i didnt quite understand all the tech but i learned some great info , thanks for sharing
That was quite a commitment. LOL

Whatever you end up with keep the cam reasonable. The fun with a stroker 427 is having instant grunt available if done well. My car is a blast to drive. Tip in is insane and it makes 420 ft/lb of RWT at 2k RPM. Power peaks at 6,400 so you don't have to rev the **** out of it to go. On weekends I pull stumps.
Old 11-18-2012, 07:41 PM
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Justin Timberlake cams ftw....

Those heads will do just fine.
Old 11-20-2012, 08:17 AM
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Originally Posted by Martin@Tick
Justin Timberlake cams ftw....

Those heads will do just fine.
"Smaller than you think and unassuming but able to F*CK anything it wants to"
Old 11-20-2012, 12:48 PM
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Originally Posted by wkmcd
"smaller than you think and unassuming but able to f*ck anything it wants to"
lol!!
Old 11-20-2012, 04:27 PM
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Originally Posted by Martin@Tick
lol!!
Just a thumb in the eye of all these silly macho named cams...Marketing doesn't always equate to more HP or better ET's.
Old 11-20-2012, 05:41 PM
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Originally Posted by WKMCD
Just a thumb in the eye of all these silly macho named cams...Marketing doesn't always equate to more HP or better ET's.
could i please get the specs on that Justin Timberlake Cam???
Old 11-20-2012, 06:04 PM
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Originally Posted by Knight-Z06
could i please get the specs on that Justin Timberlake Cam???
It was a 230-240 but the lobes you won't find in any catalog. I tried hard.
Old 11-21-2012, 01:50 PM
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Cool thanx , killer name btw lol



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