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Author
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Topic: head swap
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badazlx
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Member # 4899
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posted
 
 
ok im gonna be tearing off my heads on my car next weekend, taking off my gt40 y303 aluminum heads to go with a better head. what head should i run? there is a set of ported twisted wedge heads or a set of ported edelbrock performer heads. im running the following mods
stock short block 140k
b-cam w/1.7
gt40 y303 heads
tfs street heat "swapping to track heat soon"
70mm tb/spacer
headman 1 3/4 equal leangth headers/off road h
24# injectors and cobra maf
pullies/elctric fan
3.55 gears
and a 175 shot upon completion of swap.
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03 mach bolt ons/125 shot
Posts: 911 | From: roseville | Registered: Sep 2004
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uncle bill
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Member # 3953
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posted
afr 185s out of the box
Posts: 415 | From: antioch | Registered: Dec 2003
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1SLOWLX
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Member # 558
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posted
I would go with the tfs and move up to 30lb injectors also
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Built Tuff with your stuff ;)
Posts: 5231 | From: bay area | Registered: Nov 2001
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BlowN67
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Member # 4229
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posted
but he is only running a stock block302.
i think an performer head or performer rpm head would do fine. or afr165's.. but if moving up to more cubes i would go wth the 185's an not gain alot being a bigger head. Sal has a few good heads up for sale right now. hit him up, he should set u in the right direction.
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AIM gonein67 JOHN
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Posts: 9809 | From: Home of LARD | Registered: Mar 2004
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badazlx
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Member # 4899
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posted
ya thats who has the ported tfs heads i think i want to get
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03 mach bolt ons/125 shot
Posts: 911 | From: roseville | Registered: Sep 2004
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BlowN67
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Member # 4229
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posted
ya talk it up with him he'll help u in the right direction. cant go wrong with high ports too.
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AIM gonein67 JOHN
* californiafords.com
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Posts: 9809 | From: Home of LARD | Registered: Mar 2004
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TOPnotch
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Member # 1340
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posted
I run performer RPM heads with E cam and stock short block. Makes good power, more than most believe! Trick flow heads are pretty good also watch for the p/v clearance. B cam + 1.7rr 2.02 valves in trick flow heads + stock short block will be on the tight side.
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The bitterness of poor quality remains long after the sweetness of low price is forgoten!!!
1QWKCHP
1QWKDRP
Posts: 2255 | From: Hayward | Registered: May 2002
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TOPnotch
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Member # 1340
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posted
Oh yeah good point john don't over head that little 302. Stick with something on the smaller side for now. ![[patriot]](graemlins/patriot.gif)
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The bitterness of poor quality remains long after the sweetness of low price is forgoten!!!
1QWKCHP
1QWKDRP
Posts: 2255 | From: Hayward | Registered: May 2002
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badazlx
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Member # 4899
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posted
well how much of a gain will i see by swapping my gt40 heads for a set of performers?
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03 mach bolt ons/125 shot
Posts: 911 | From: roseville | Registered: Sep 2004
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TOPnotch
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Member # 1340
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posted
Quite a bit. The gt-40 heads have 194/150 valves and the performer rpm's have 202/160 Not to mention the runners and port layout. I have never had good luck with the gt40 ford aluminum heads. I have never seen these heads make any real good numbers.
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The bitterness of poor quality remains long after the sweetness of low price is forgoten!!!
1QWKCHP
1QWKDRP
Posts: 2255 | From: Hayward | Registered: May 2002
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badazlx
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Member # 4899
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posted
what about the 1.9 performers?
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03 mach bolt ons/125 shot
Posts: 911 | From: roseville | Registered: Sep 2004
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StreakMatt
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Member # 6257
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posted
quote:
Originally posted by TOPnotch:
Quite a bit. The gt-40 heads have 194/150 valves and the performer rpm's have 202/160 Not to mention the runners and port layout. I have never had good luck with the gt40 ford aluminum heads. I have never seen these heads make any real good numbers.
I ported my Bro's GT40Y's and he runs 12.1's @111-112 with a stock 302, E-cam and Systemax intake. They can make power but you have to put work into them, also they have 1.54 EX. valves not 1.50
If you are going to upgrade I would do the Twisted Wedges over the Performers if both heads are untouched. The performer RPM's are not smog legal either, make sure they are just performers.
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Custom Blue '88 GT: Garage Built= MM&FF January 2012 Cover and Feature. Tuned by Bob Kurgan
Black '03 Cobra: 2.9 Whipple Tuned by Bob Kurgan
Posts: 1198 | From: Sacramento | Registered: Nov 2005
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badazlx
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Member # 4899
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posted
so should i just pull the heads off and go get them ported? also if i do this i think i might have the heads milled too to gain a bit of compression the heads are 64cc
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03 mach bolt ons/125 shot
Posts: 911 | From: roseville | Registered: Sep 2004
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badazlx
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Member # 4899
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posted
ive just heard bad things about the heads after i had bought them
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03 mach bolt ons/125 shot
Posts: 911 | From: roseville | Registered: Sep 2004
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30Tunes
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Member # 8105
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posted
i agree with them when they said theres no need to upgrade the injectors.....you aint got nothing to significant to be running that much fuel. if you dont have it already get a 190lph fuel pump, and a adjustable fuel pressure regulator for them 24#s. i personally dont know too much about the heads but i would say that the gt40s are cool. they have multiple styles of heads....y's,p's, etc. aluminum is always lighter but some dont like it and would rather cast iron. like i said i dont know too much in that area but i think ur fine. you sound like you got a cool setup.....
[ March 16, 2008, 12:28 PM: Message edited by: 302oons ]
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SUCCESS ONLY COMES BEFORE WORK IN THE DICTIONARY
1991 Calypso Green Notch
1993 Cobra Clone - SOLD
Posts: 829 | From: Bay Area | Registered: Dec 2007
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TOPnotch
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Member # 1340
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posted
Its not that they are bad, there is just better stuff out there now that will make you more power. Those heads were designed over 15 years ago. There is better heads available now. Yeah the RPM heads are not smog legal. If thats a problem for you. I would stick with the trick flows, or performers. AFR 165 are a great head for your combo also! I guess it just depends on how much money you want to spend?
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The bitterness of poor quality remains long after the sweetness of low price is forgoten!!!
1QWKCHP
1QWKDRP
Posts: 2255 | From: Hayward | Registered: May 2002
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badazlx
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Member # 4899
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posted
well i was gonna try to sell my heads and some out of pocket a couple hundred to get some or i could just spend the money on getting them ported? what should i do?
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03 mach bolt ons/125 shot
Posts: 911 | From: roseville | Registered: Sep 2004
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StreakMatt
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Member # 6257
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posted
quote:
Originally posted by badazlx:
well i was gonna try to sell my heads and some out of pocket a couple hundred to get some or i could just spend the money on getting them ported? what should i do?
I.M.O It would be more simple for you to just sell yours and pick up some Twisted Wedges. You wouldn't have to worry about finding someone to do the port work.
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Custom Blue '88 GT: Garage Built= MM&FF January 2012 Cover and Feature. Tuned by Bob Kurgan
Black '03 Cobra: 2.9 Whipple Tuned by Bob Kurgan
Posts: 1198 | From: Sacramento | Registered: Nov 2005
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badazlx
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Member # 4899
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posted
the twisted wedge's are fully ported, is that going to be to much for my car?
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03 mach bolt ons/125 shot
Posts: 911 | From: roseville | Registered: Sep 2004
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TOPnotch
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Member # 1340
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posted
Don't port your heads. Sell them and buy some out of the box edelbrocks, trick flows or afr. Run them for now. They you could have them ported later if you step up your combo. Don't sink any money into the GT-40 heads you have. You won't gain much.
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The bitterness of poor quality remains long after the sweetness of low price is forgoten!!!
1QWKCHP
1QWKDRP
Posts: 2255 | From: Hayward | Registered: May 2002
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badazlx
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Member # 4899
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posted
ok so im gonna go with the non ported twisted wedge heads. what power gains should i expect? a noticable difference i hope?
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03 mach bolt ons/125 shot
Posts: 911 | From: roseville | Registered: Sep 2004
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TOPnotch
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Member # 1340
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posted
Hey wait a second. I just cleared out my pm's and noticed you used to be Ranger guy. Remember the $150 you owe me for the spindles and wheel trade we did? Never heard back from you.
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The bitterness of poor quality remains long after the sweetness of low price is forgoten!!!
1QWKCHP
1QWKDRP
Posts: 2255 | From: Hayward | Registered: May 2002
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badazlx
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Member # 4899
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posted
pm me your number im coming down that way maybe this weekend
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03 mach bolt ons/125 shot
Posts: 911 | From: roseville | Registered: Sep 2004
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