GT40 Heads

fastford3388 · March 10th, 2007, 12:24 PM

I was gonna start looking into new heads for my '89 GT and I started looking into the gt40s. I noticed that there is a gt40X gt40Y and gt40P. I was wondering what the major difference in all of them is and which would be the best? Also, What could I get these heads off of? I heard they were on some explorers but I'm not sure what the different styles of heads were off of. Is it recomend to put a new cam if I replaced the heads? Which cam from ford racing would work the best with each head?

JBIGBOOTSY · March 10th, 2007, 12:38 PM

X and Ys are aluninum

Racinjason81 · March 10th, 2007, 03:05 PM

when you buy gt40crate engines from ford they come with either a b or an e cam . you would be better off with the e cam or you could get one from anderson ford motorsport which you are probably better off doing

fastford3388 · September 29th, 2008, 10:56 PM

are the gt40x worth the extra money? does anyone have experience with them? any problems or things i should know about the x heads? is there problems with aluminum heads on an iron block?

Sleeper_Stang_89 · September 29th, 2008, 11:01 PM

I ad a set of the gt40x heads... they are a decent uprgrade from stock, but if you plan to make good NA numbers have them ported or just put that money into some TW heads.

Tony_90fox · September 29th, 2008, 11:04 PM

if you are going to spend money on the aluminum gt40s, just save a little bit more and buy some trick flows or something similar...

The iron gt40 or gt40p heads are decent for a budget.

GoodOleBoyzRacin · September 29th, 2008, 11:44 PM

if you get em get some from the pull a part. if you get aluminums get some better heads

March 10th, 2007, 12:24 PM	#1
fastford3388 Regular 1991 Mustang GT Join Date: Feb 2007 Location: Lisle, IL Posts: 367 iTrader: 0 reviews	GT40 Heads I was gonna start looking into new heads for my '89 GT and I started looking into the gt40s. I noticed that there is a gt40X gt40Y and gt40P. I was wondering what the major difference in all of them is and which would be the best? Also, What could I get these heads off of? I heard they were on some explorers but I'm not sure what the different styles of heads were off of. Is it recomend to put a new cam if I replaced the heads? Which cam from ford racing would work the best with each head? __________________ - '90 Mustang LX-Sold "Debbie" - '89 Mustang GT- Deceased "Lucy" - '91 Mustang GT-70,000 mi "The Unicorn"

March 10th, 2007, 12:38 PM	#2
JBIGBOOTSY MM Fanatic 1990 LX hatch Join Date: Aug 2006 Location: Hobart Indiana Posts: 4,392 iTrader: 0 reviews	X and Ys are aluninum __________________ Bolt-on Abraham Lincoln Log motor. With extra wiring.

March 10th, 2007, 03:05 PM	#3
Racinjason81 Hardcore Enthusiast Join Date: Feb 2007 Location: New jersey Posts: 1,559 iTrader: 0 reviews	when you buy gt40crate engines from ford they come with either a b or an e cam . you would be better off with the e cam or you could get one from anderson ford motorsport which you are probably better off doing __________________ Heres a real funny video youtube.com/watch?v=ojB7KkaR03I VTEC stands for Very Torqueless Economy Car Honda stands for Hold On Not Done Accelerating 1991 LX 5.0 H/B(T-70 turbo coming soon)

September 29th, 2008, 10:56 PM	#4
fastford3388 Regular 1991 Mustang GT Join Date: Feb 2007 Location: Lisle, IL Posts: 367 iTrader: 0 reviews	are the gt40x worth the extra money? does anyone have experience with them? any problems or things i should know about the x heads? is there problems with aluminum heads on an iron block? __________________ - '90 Mustang LX-Sold "Debbie" - '89 Mustang GT- Deceased "Lucy" - '91 Mustang GT-70,000 mi "The Unicorn"

September 29th, 2008, 11:04 PM	#6
Tony_90fox Banned Join Date: Jun 2006 Location: Bowling Green, KY Posts: 3,831 iTrader: 0 reviews	if you are going to spend money on the aluminum gt40s, just save a little bit more and buy some trick flows or something similar... The iron gt40 or gt40p heads are decent for a budget. __________________ [SIGPIC][/SIGPIC] [B][U]MM Sapper Squad[/U][/B] [QUOTE=Regency 2007;1676187]MSO's stupidity has never stopped amazing me since the day he joined this forum.[/QUOTE]

September 29th, 2008, 11:44 PM	#7
GoodOleBoyzRacin Regular 1990 Mustang GT 13.64 @ 101 MPH Join Date: Jul 2008 Location: Memphis, TN Posts: 324 iTrader: 0 reviews	if you get em get some from the pull a part. if you get aluminums get some better heads __________________ 90 Ford Mustang 5.0 T5- BROKE 1.9 60' on street tires13.64 @ 101 MPH 89 Ford Mustang coupe- http://www.youtube.com/watch?v=1nIrzcQz3_8

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