GTP stage II heads

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Oct 20, 2006 | 11:46 PM

eLTwerker

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From: Metairie, LA

GTP stage II heads

Anybody out there know the specs on these heads. Valve sizes, combustion chamber, intake and exhaust runners, flow #s? I've searched, but can't find anything. Please help!

Oct 21, 2006 | 12:01 AM

Eric Bazan

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From: Albuquerque, NM

Here is some info for you. Google is your friend.

LINK

Eric

Oct 21, 2006 | 09:30 AM

eLTwerker

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link doesn't work. Anyone else?

Oct 21, 2006 | 10:39 AM

FURY

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Sorry if I'm thread-jacking, but does anyone know what the combustion chamber cc's are on the GTP Stage II head? Do they use a stock GM casting, or is it a larger chamber??

Oct 21, 2006 | 10:52 AM

Jditlfm

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From: Brockport NY

Lift Intake Exhaust

0.100 70.0 51.0

0.200 122.0 115.0

0.300 186.0 145.0

0.400 222.0 176.0

0.500 254.0 204.0

0.600 266.0 217.0

Oct 21, 2006 | 12:13 PM

Ray@Nitrous Outlet

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GTP uses a stock casting
Link posted above gives the following #'s
GTP STG2 LT1 Casting
Lift .100 /.200 /.300 /.400 /.500 /.600
CFM Intake 70.0/ 122.0 / 186.0/ 222.0/ 254.0/ 266.0
CFM Exhaust 51.0/ 115.0 / 145.0/ 176.0/ 204.0/ 217.0

GTP STG2 LT4 Casting
Lift .100 /.200 /.300 /.400 /.500 /.600
CFM Intake 64.5/ 135.6 / 192.3/ 239.5/ 269.4/ 283.9
CFM Exhaust 54.5/ 111.4 / 147/ 183.5/ 202.1/ 222.1

My GTP STG2 LT1 Castings (flowed by Brodix)
Lift .200/.300 /.400 /.500 /.600 /.650 /.700
CFM Intake 134.6/ 183.9 / 227.9/ 258.4/ 266.8/ 266.0/ 263.0
CFM Exhaust 106.2/ 140.1 / 164.2/ 181.9/ 191.6/ 193.2/ 194.8
48cc combustion chamber (mine are milled)
188cc intake runner
2.0 intake valve
1.56 exhaust valve

Last edited by Ray@Nitrous Outlet; Oct 21, 2006 at 12:25 PM.