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Author Topic: gt40p heads on early 1969 302 block  (Read 1204 times)
BCOWANWHEELS
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« on: February 26, 2018, 08:43:54 pm »

can somebody tell me what all needs to be done to get the gt40p heads to work on early 302 block. I,am gonna install hard exhaust valve seats along with 7/16 screw in studs, pushrod guide plates 4 sure.
thanks
bob
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I BELIEVE IN JOHN 3:16
juiced coupe
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Big Block
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« Reply #1 on: February 26, 2018, 09:06:38 pm »

Drill the correct steam holes in the block and get headers that will clear.
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Doing more with less, or something like that.
http://sbftech.com/index.php/topic,20009.0.html

Quote from: Monte Smith
Bottom line, if it was the hot ticket, the fast guys would do it.............they don't

You might need some Titanium rods and a flow bench!  LMAO on floor

I honestly don't get it.

I'm sweating, my heart is racing, my clutch foot is twichin', and my right arm punched the computer screen doing an involentary 2-3 shift while reading all that. 
scienceguy
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« Reply #2 on: February 27, 2018, 08:23:48 am »

I believe the 'P' heads have a different spark plug location, and won't work with standard headers.
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1966 Mustang, Toploader 4-speed
Pump Gas, Flat Tappet 306
9.88 @ 135.67
BCOWANWHEELS
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« Reply #3 on: February 27, 2018, 11:17:13 am »

DO I REALLY HAVE TO MODIFY MY BLOCK
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I BELIEVE IN JOHN 3:16
juiced coupe
Six figures worth of don't give a f*ck
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Big Block
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Location: Pascagoula, MS
The land mass between New Orleans and Mobile


« Reply #4 on: February 27, 2018, 03:54:41 pm »

DO I REALLY HAVE TO MODIFY MY BLOCK

I'm not saying that you are guaranteed to overheat, but the likelihood is greatly increased.


Its really not that bad. With the engine on the stand, maybe 20-30 minutes. A little longer in the car.
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Doing more with less, or something like that.
http://sbftech.com/index.php/topic,20009.0.html

Quote from: Monte Smith
Bottom line, if it was the hot ticket, the fast guys would do it.............they don't

You might need some Titanium rods and a flow bench!  LMAO on floor

I honestly don't get it.

I'm sweating, my heart is racing, my clutch foot is twichin', and my right arm punched the computer screen doing an involentary 2-3 shift while reading all that. 
BCOWANWHEELS
6 Banger
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Posts: 83

Location: KINGSPORT, TN.

« Reply #5 on: February 27, 2018, 04:05:47 pm »

I noticed the early and late 302,s all use the same felpro head gasket number. but anyway I just bought a 5.0 explorer short block roller engine so that's the engine I,ll use then gt40p heads on. many years ago my dad bought me the 1969 302 and it has tremendous sentimental value , still std bore and I,ve got some maxed out 289 k heads so I,ll just use them on this refresh.
thanks so much  fellas
regards
bob

p/s
old hot rodders are still out there  but now they call us OLD SCHOOL  LOL
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I BELIEVE IN JOHN 3:16
juiced coupe
Six figures worth of don't give a f*ck
Global Moderator
Big Block
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Posts: 8394


Location: Pascagoula, MS
The land mass between New Orleans and Mobile


« Reply #6 on: February 27, 2018, 05:08:57 pm »

I noticed the early and late 302,s all use the same felpro head gasket number.

The head gaskets have both sets of steam holes, and is also what you would use as a drilling pattern.
Logged

Doing more with less, or something like that.
http://sbftech.com/index.php/topic,20009.0.html

Quote from: Monte Smith
Bottom line, if it was the hot ticket, the fast guys would do it.............they don't

You might need some Titanium rods and a flow bench!  LMAO on floor

I honestly don't get it.

I'm sweating, my heart is racing, my clutch foot is twichin', and my right arm punched the computer screen doing an involentary 2-3 shift while reading all that. 
BCOWANWHEELS
6 Banger
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Posts: 83

Location: KINGSPORT, TN.

« Reply #7 on: February 28, 2018, 04:43:28 pm »

thanks, I,ve got a 97 5.0 coming in about a week and I,ll compare the old vs newer blocks.
bob
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I BELIEVE IN JOHN 3:16
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