Questions about 402 build?
Thread Starter
Former Vendor
Joined: Mar 2003
Posts: 18,666
Likes: 395
From: Tampa FL
St. Jude Donor '07-'08-'09-'10-'11-'12'-'13-'14-'15
Questions about 402 build?
I am about to begin my build. Will begin with a forged 402 with Eagle, Diamond, Total Seal, Fed Mogul. Pistons are -2cc. I will be NA. No plans for FI or Nitrous.
I have two head options (because I have both in my garage).
First a set of Stage III Patriot LQ9 heads.
The other option is AFR 205, milled to 59cc.
My cam is a Comp XER 244/248 612/615 114+4.
Kooks 1 3/4 with 3" DMH cutouts and ZO6 Ti exhaust
Mizeire EWP
TPIS ported LS6 with Billet TPIS 85mm oval TB
I think that is all that matters for power production?
Any suggestions on milling the Patriot heads for NA application? Any issues with PTVC for the AFR @ 59cc? Head gasket size for max efficiency?
Thanks
I have two head options (because I have both in my garage).
First a set of Stage III Patriot LQ9 heads.
The other option is AFR 205, milled to 59cc.
My cam is a Comp XER 244/248 612/615 114+4.
Kooks 1 3/4 with 3" DMH cutouts and ZO6 Ti exhaust
Mizeire EWP
TPIS ported LS6 with Billet TPIS 85mm oval TB
I think that is all that matters for power production?
Any suggestions on milling the Patriot heads for NA application? Any issues with PTVC for the AFR @ 59cc? Head gasket size for max efficiency?
Thanks
Burning Brakes
Joined: May 2007
Posts: 841
Likes: 0
From: Gettysburg PA
The AFR's will undoubtably produce more power than a "budget" head, and with a thicker deck will be much more rigid (although mostly important for FI applications) - If you have the cash to swing the AFR's I would without a doubt to it.
Also, with a big cube motor like your building, I would go with 1 7/8 headers, and a FAST 92/92 setup.
Also, with a big cube motor like your building, I would go with 1 7/8 headers, and a FAST 92/92 setup.
Burning Brakes
Joined: May 2007
Posts: 841
Likes: 0
From: Gettysburg PA
Also it's impossible to judge the PTVC with the information given, or the correct head gasket thickness.
Will the block be decked?
If so, what will the height be set at?
Valve sizes?
What CR are you aiming for?
Will the block be decked?
If so, what will the height be set at?
Valve sizes?
What CR are you aiming for?
Thread Starter
Former Vendor
Joined: Mar 2003
Posts: 18,666
Likes: 395
From: Tampa FL
St. Jude Donor '07-'08-'09-'10-'11-'12'-'13-'14-'15
Race Director
Joined: Dec 2004
Posts: 13,760
Likes: 75
From: Haymarket VA
Do the math on those 205's for the CR with 2cc pistons.. That would be my choice but you're CR is going to be through the roof (over 13:1) unless you get the chambers opened up and run a stock gasket.
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Advanced
Joined: Dec 2006
Posts: 99
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From: Austin TX
Sell the AFRs and the intake. Use the extra money to:
1. Get the stage IIIs milled to 66cc (use stock gaskets.. .052)
2. Buy a ported Fast 92mm intake and 95mm TB
3. ARP bolts (if you don't already have them)
CR = 11.6
DCR = 8.4
1. Get the stage IIIs milled to 66cc (use stock gaskets.. .052)
2. Buy a ported Fast 92mm intake and 95mm TB
3. ARP bolts (if you don't already have them)
CR = 11.6
DCR = 8.4
Thread Starter
Former Vendor
Joined: Mar 2003
Posts: 18,666
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From: Tampa FL
St. Jude Donor '07-'08-'09-'10-'11-'12'-'13-'14-'15
http://www.gmhightechperformance.com...ads/index.html
I would definitely take a set of AFR 225 but dont know if that is in my budget.
Cajun
Former Vendor
Joined: Feb 2007
Posts: 17,337
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From: Birmingham, AL www.hinsonsupercars.com 205-909-9402
Thanks bro. I got rid of the PP heads and am selling the AFR. I plan to get TFS 215 or 225. I can change the intake out easily at any time so that will come later. Plus I want to see what the gains are. Based on this article I found the TFS cant be touched although the AFR was a 205 and the TFS is only a 205 so that probably accounts for the difference.
http://www.gmhightechperformance.com...ads/index.html
I would definitely take a set of AFR 225 but dont know if that is in my budget.
Cajun
http://www.gmhightechperformance.com...ads/index.html
I would definitely take a set of AFR 225 but dont know if that is in my budget.
Cajun
$2379 - Trickflow CNC Ported 225cc
Seth
Thread Starter
Former Vendor
Joined: Mar 2003
Posts: 18,666
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From: Tampa FL
St. Jude Donor '07-'08-'09-'10-'11-'12'-'13-'14-'15
The Trickflow's are really nice and always make big power. I would do the 225cc for your 402ci.
$2379 - Trickflow CNC Ported 225cc
Seth
$2379 - Trickflow CNC Ported 225cc
Seth
Cajun
Former Vendor
Joined: Feb 2007
Posts: 17,337
Likes: 39
From: Birmingham, AL www.hinsonsupercars.com 205-909-9402
Thread Starter
Former Vendor
Joined: Mar 2003
Posts: 18,666
Likes: 395
From: Tampa FL
St. Jude Donor '07-'08-'09-'10-'11-'12'-'13-'14-'15
Former Vendor
Joined: Feb 2007
Posts: 17,337
Likes: 39
From: Birmingham, AL www.hinsonsupercars.com 205-909-9402
Melting Slicks
Joined: Oct 2007
Posts: 2,464
Likes: 2
From: Cedarburg, WI
