GT-40 heads

J

Justin111

Member

Nov 28, 2011

31

0

7

Dec 8, 2011

#1

• Dec 8, 2011

• #1

Hi,

I pulling my engine out of a 88gt. It has mild bolt ons ie. full exhaust, 65mm throttle body, 70mm mass air, electric fan.

Are gt-40 heads worth messing with? I could get a set out of a explorer at the local junkyard for $120.00 and my shop works with a local machine shop that could clean them up cheap.

What do I need for them? as far as valves springs and such. I plan on going pretty much stock. I have a explorer intake and injectors. Also the person I bought the car from said there was a aftermarket cam in it but I not positive.

Thanks,

Justin

 

S

screamin5oh

Member

Jul 13, 2011

170

5

19

centerville oh

Dec 8, 2011

#2

• Dec 8, 2011

• #2

yes they are deff worth using, i would get the trick flow spring upgrade kit, use your stock injectors on the explorer intake

 

srtthis

the guy doing it does every local racers rear end

15 Year Member

Jul 3, 2009

5,129

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Maryland

Dec 9, 2011

#3

• Dec 9, 2011

• #3

id pick up a set of 24's and a MAF also...

 

VibrantRedGT

"STANGNET'S PENGUIN SMACKER"

15 Year Member

Nov 29, 1999

14,679

424

154

Boca Raton, Florida

Dec 9, 2011

#4

• Dec 9, 2011

• #4

Maybe your local machine shop can help them flow a bit more as well. I'd look into that too. They are decent heads, with some machine work they can be much more.

 

srtthis

the guy doing it does every local racers rear end

15 Year Member

Jul 3, 2009

5,129

1,666

204

Maryland

Dec 9, 2011

#5

• Dec 9, 2011

• #5

VibrantRedGT said:

Maybe your local machine shop can help them flow a bit more as well. I'd look into that too. They are decent heads, with some machine work they can be much more.

Click to expand...

yup... deck them around .020" to get the compression up and open them up a bit

 

Reactions: VibrantRedGT

rbonella

Member

Dec 15, 2008

409

6

19

@ home

Dec 9, 2011

#6

• Dec 9, 2011

• #6

I agree with above...you can make those heads move some air with a little work. But old TW heads or RPM heads are pretty easy to come by and they will always be a little ahead of GT40's when it comes to flow....I'd grab to GT40's, but be on the look out for other heads for sale