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Discussion Starter · #1 ·
I intend to buy a Ford crate engine to go into my GT40 kit.

Ford page shows many choices for 5.0L/302 and Stroker Small Block Engines anging from 340to 450HPs.

http://www.fordracingparts.com/crateengine/302smallblock.asp

has anyone here and experience with the low end / mid torque of the 390 and 450 HP versions ?

Also I'd like to know if the blocks are stamped with any ##s, or if the ##s of old block can be used.


txs
C.
 

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Are you limited to a 302/5.0? If you are already going to a stroker 302, why not go with a 351w stroked to 427? Then you can tell everyone that you have a 427 in your nice new GT40. Its a little bigger, but you wont have to be worried about low end torque!

A couple of things we should know, whats the gearing like for the tranaxle? First gear and final drive ratios?

Without knowing that info, considering that the biggest difference between the 390 and 450 is the stroke of the crank, I would go for the 390. Its down on power and torque a bit, but the 302 will rev higher than the 347. And with most of the GT40s out there being so light, you wont miss that extra stroke very much.

Can you post pics of your progress! I've always wanted to build a GT40!

<font size=-1>[ This Message was edited by: ChicoB on 4/2/06 1:05am ]</font>
 

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I've looked into some of the Kit GT40s. What I learned is you may be somewhat limited in the amount of power you can put into it depending on the transaxle you use. Basically you can go 302 and build up a rever, or go bigger block and watch it spit the gears out the case, or spend a lot of $$$$ for a manly gearbox. I was thinking about a 5.0 with a supercharger........ Good luck.
 

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Discussion Starter · #6 ·
It is a street car, rarely taken to "official" races.

I "should be limited" to a 289, not even a 302, as the Kit which was built several years ago has a 1968 registration saying "289 Ford". It being rebuilt / restored currently.
So the 351is not a choice ( unfortunately ). So the 302 would be perfect

I'll check gear & rear end ratio and transaxle type, no documentation available, so this might take some days.

Thanks

C.

<font size=-1>[ This Message was edited by: Carlos on 4/3/06 1:01am ]</font>
 

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I have the 345 horse gt 40 302. it makes 300 rwhp and does very well in my 67 mustang coupe. the car has a t5 5 speed and 3.80 rear gears, and it is a serious street contender. Not the fastest car around but plenty for a street car. With some slicks bolted on I expect the car to run mid to high 12's in the quarter. PM me with any specific questions.
 

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Discussion Starter · #9 ·
this will not be smog checked, would be tough with 48IDA Webbers
)

The info I got on the transaxle:
It is a ZF/Audi modified to handle upt to 700HP, so far away from my expected hps
Even if it can do a little less HP only, the light car plus wheelspin won't put too much load on it.

@ujt389 I'll pm you later on, txs.
 
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