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09-25-2008, 04:43 PM
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#1
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Mr Fantastic
Join Date: Aug 2004
Location: West Milford NJ
Posts: 7,917
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mmmmmm "new" heads
picked up a set of GT40 heads off a 95 cobra for $350 shipped...normally they go for $400ish without shipping, and i got a set of 1.7 rockers too that i can sell and make back almost half my money 
differences are...
bigger valves. 1.78int/1.46exh on the stock heads, 1.84/1.54 on the GT40s.
bigger intake ports.
slightly bigger exhaust ports.
along with some improved runners. what this equates to, stock for stock...well heres the flow numbers.
Stock heads
Intake @ .xxx lift
.100 55.4
.200 101.3
.300 140.9
.400 150.8
.500 164.6
Exhaust
.100 42
.200 78.9
.300 102.4
.400 110.8
.500 114.2
GT40 heads
Intake
.100 54
.200 107
.300 157
.400 183
.500 192
Exhaust
.100 47
.200 94
.300 119
.400 128
.500 128
im gonna do a little work on the GT40s with some help from an online how-to and get a little more out of them, but they should be good for a few HP, especially with the blower on there.
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Matt
B18B1 FTW
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09-25-2008, 04:48 PM
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#2
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,941
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Strip em and get em cleaned up!
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Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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09-25-2008, 04:53 PM
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#3
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Mr Fantastic
Join Date: Aug 2004
Location: West Milford NJ
Posts: 7,917
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Quote:
Originally Posted by Shownomercy
Strip em and get em cleaned up!
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stupid rockers have a torx bolt in them so i have to get a socket from work tomorrow
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Matt
B18B1 FTW
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09-25-2008, 04:55 PM
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#4
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,941
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Poly Locks FTW. And are you massaging them yourself or sending em out?
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Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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09-25-2008, 04:59 PM
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#5
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Mr Fantastic
Join Date: Aug 2004
Location: West Milford NJ
Posts: 7,917
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im gonna do these myself but im sending out the lower intake
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Matt
B18B1 FTW
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09-25-2008, 05:04 PM
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#6
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Admin.
Join Date: Aug 2005
Location: Hamilton, NJ
Posts: 20,170
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So much for your impure thoughts
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Vent Windows Forever!
The looser the waistband, the deeper the quicksand. Or so I have read.
Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.
Hey everybody, it's good to have you on the Baba-too-da-ba-too-ba-ba-buh-doo-ga-ga-bop-a-dop
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09-25-2008, 05:05 PM
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#7
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Mr Fantastic
Join Date: Aug 2004
Location: West Milford NJ
Posts: 7,917
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Quote:
Originally Posted by Shownomercy
Poly Locks FTW. And are you massaging them yourself or sending em out?
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negative ont he poly locks btw...these are pedestal mount rockers. torque them down and hit torque with a certain amount of lifter preload, kinda annoying.
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Matt
B18B1 FTW
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09-25-2008, 05:09 PM
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#8
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Resident Camera Guy
Join Date: Aug 2004
Location: North Jersey
Posts: 10,971
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Man those are pretty massive compared to the stock. The car should fly as soon as you get a chance to do all the work!
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09-25-2008, 05:33 PM
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#9
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11 second club / Moderator
Join Date: Aug 2004
Location: West Berlin, NJ
Posts: 7,148
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didn't i see this before with your blue one?
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2001 Trans Am WS6 •SLP Loudmouth II •UMI Suspension •12.857 @ 109.57
1996 Trans Am WS6 •Pacesetter Longtubes •Strange 12 Bolt •Spohn Suspension •11.152 @ 123.85
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09-25-2008, 05:34 PM
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#10
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Mr Fantastic
Join Date: Aug 2004
Location: West Milford NJ
Posts: 7,917
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Quote:
Originally Posted by deadtrend1
didn't i see this before with your blue one?
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those were ported stock heads
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Matt
B18B1 FTW
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09-25-2008, 05:42 PM
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#11
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11 second club / Moderator
Join Date: Aug 2004
Location: West Berlin, NJ
Posts: 7,148
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did ian have the gt40 heads then? someone got exploder5.0 heads .. i remember that much .. lol
__________________
2001 Trans Am WS6 •SLP Loudmouth II •UMI Suspension •12.857 @ 109.57
1996 Trans Am WS6 •Pacesetter Longtubes •Strange 12 Bolt •Spohn Suspension •11.152 @ 123.85
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09-25-2008, 05:43 PM
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#12
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Join Date: Dec 2005
Location: Boston/North
Posts: 9,214
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Put the blower on already 
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Quote:
Originally Posted by BonzoHansen
dumbass.
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09-25-2008, 05:59 PM
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#13
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Mr Fantastic
Join Date: Aug 2004
Location: West Milford NJ
Posts: 7,917
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Quote:
Originally Posted by deadtrend1
did ian have the gt40 heads then? someone got exploder5.0 heads .. i remember that much .. lol
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i had an exploder intake...i also have another in my garage which is going on the car when the heads go on
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Matt
B18B1 FTW
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09-25-2008, 08:15 PM
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#14
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Join Date: Mar 2008
Location: Shreveport Louisianna Barksdale AFB
Posts: 1,415
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sweet deal bro now sell the heads and the car and buy that ls1 in the classifieds...impure thoughts ftw...either way w.e you do DO IT ALREADY I wanna see you (or at least hear of you) driving a fast whip.
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USAF Jet Propulsion Specialist
 1985 383 Camaro-nothing special I promise 
2000 NBM z28-also nothing special
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09-25-2008, 08:16 PM
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#15
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Mr Fantastic
Join Date: Aug 2004
Location: West Milford NJ
Posts: 7,917
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patience my son patience
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Matt
B18B1 FTW
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09-25-2008, 09:32 PM
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#16
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11 Second Club / I <3 LT1s
Join Date: May 2008
Location: Troy, Mi
Posts: 2,642
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woohoo, your on your way to 240HP. Haha just messin with ya. My dad had a 91GT vert and those are fun little cars and sound so sweet.
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Vinnie -
00 SS A4- LQ9/LS3/Stalled/3.42s 1.48/11.10/121 mph<-6spd swap in progress.
13 Silverado Z71- Sold 11/16
99 Z28 M6- -H/C/9in - sold 1/13
99 Silverado Z71- The DD - Sold 7/13
03 CBR 600RR - Sold 8/13
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09-25-2008, 09:36 PM
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#17
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Join Date: Apr 2006
Location: Point Pleasant
Posts: 1,809
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My boss has a capri with a gt40 crate 302. yeah 700hp is alot....
Those heads will do ya good.
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-Vinnie
94 2wd SBSC Gmt400. 330CI LSX, Fast 102, Trickflow 205s, close ratio nv3500, 4.30/trutrac.
Last edited by r0nin89; 09-25-2008 at 09:36 PM.
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09-25-2008, 10:07 PM
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#18
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,370
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nice man good luck with that. you are getting a tune after all of this, right?
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09-25-2008, 10:37 PM
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#19
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BadMod
Join Date: Aug 2004
Location: hamilton, nj
Posts: 8,889
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yeah he said in the other thread that its going to a shop for the blower install and tune
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So much stupid, so little time.
Quote:
Originally Posted by 79CamaroDiva
It started before I drove your car. I just have to look at it the wrong way and your car poops parts.
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Mercerville MotorSports, LLC
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09-25-2008, 11:46 PM
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#20
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Join Date: Jan 2008
Location: West Milford/Villanova
Posts: 1,044
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Its still a mustang. And its not 5.0 L, its actually 4.9 L.
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1992 Camaro RS 305 TBI,- Off the road, awaiting rebuild
2004 GMC Sierra- Current Daily Driver.
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09-25-2008, 11:48 PM
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#21
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Join Date: Sep 2004
Location: Haledon, NJ
Posts: 5,162
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looks good..get movin'
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1989 IROC-Z 355 LT1 T56 Swapped
2016 Chevy Colorado LT 3.6 v6
2008 Jeep Grand Cherokee Laredo 4.7L RIP 12/29/2016
1998 Honda CBR 600F3
2003 Yamaha FX140
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09-26-2008, 06:27 AM
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#22
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Mr Fantastic
Join Date: Aug 2004
Location: West Milford NJ
Posts: 7,917
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Quote:
Originally Posted by cdacda13
Its still a mustang. And its not 5.0 L, its actually 4.9 L.
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still better than a 305
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Matt
B18B1 FTW
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09-26-2008, 09:19 AM
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#23
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Join Date: Jan 2008
Location: West Milford/Villanova
Posts: 1,044
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Quote:
Originally Posted by GP99GT
still better than a 305
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That is true. Then again, so are most engines.
One day, if I ever finish my car, we'll run them at island.
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1992 Camaro RS 305 TBI,- Off the road, awaiting rebuild
2004 GMC Sierra- Current Daily Driver.
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09-26-2008, 11:44 AM
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#24
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Join Date: Feb 2005
Location: PA
Posts: 491
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Quote:
Originally Posted by deadtrend1
did ian have the gt40 heads then? someone got exploder5.0 heads .. i remember that much .. lol
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Got those on my 99 Xploder...believe they're the GT-40P iron heads....
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09-27-2008, 02:39 AM
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#25
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11 Second Club
Join Date: Feb 2008
Location: Edison, NJ
Posts: 4,620
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thought gt-40's were aluminum... guess i was wrong.
__________________
1999 Z28 Convertible. 6 speed swap, wide cowl hood, full hockey stripes, and a whining 10 bolt.
2008 Sierra Vortec Max. 6.2 swapped, headers, Magnaflow catback, GMPP CAI, NHT optioned tow package.
2006 GTO, 11.48 @ 118.3
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