This is topic Stealth FI in forum Tech Talk at Northern California Ford Owners  .


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Posted by talaposa (Member # 2460) on :
 
I'm building a sleeper engine for my early falcon using my 427-W stroker. This time though I'd like to run the 302 upper plenum and 351 lower plenum .

Is this possible? Do they match?
 

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Posted by SilverLX351 (Member # 3207) on :
 
depends what intake you use. There is a GT40 lower for 351w and a cobra, GT40, or box upper will bolt on to it. Trickflow also makes a 351w intake. hope this help!
 

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Posted by talaposa (Member # 2460) on :
 
Thanks...that means to the average joe I can pretend it has a 302 and he can pretend he can pass me! Hmm maybe the new iron eagle with AFR's and some juice might help.
 

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Posted by FasterDamnit (Member # 442) on :
 
You want to put a long runner intake meant for a 302 on 427 cubic inches? Guess you don't want to make any horsepower- just tons of torque below 3k.
 

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Posted by talaposa (Member # 2460) on :
 
Its a trade off of course but I have to look at the use of the vehicle. Will rarely be used on the strip but on the freeway and in town.MPG is important. It's a 62 falcon (2900 lbs) and the engine has been in it for some time. The last model A with a 454 chevrolet I smoked nailed the engine as a 351 "probably stroked"

 

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Posted by FasterDamnit (Member # 442) on :
 
Trade off?? How about a serious choke on power? Why bother putting in a 427 if all you want is the power of built 302? That much displacement needs far more cfm than any 302 EFI upper can provide.
 

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Posted by talaposa (Member # 2460) on :
 
I already have a built 302 that pulls strong in a ranchero. As you know the narrow passages will limit upper rpm horsepower but increase lower RPM horsepower and torque. On the street lower rpm port velocity is king. How many people drive to reno over 4000 rpm?
 

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Posted by FasterDamnit (Member # 442) on :
 

quote:

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Originally posted by talaposa:
I already have a built 302 that pulls strong in a ranchero. As you know the narrow passages will limit upper rpm horsepower but increase lower RPM horsepower and torque. On the street lower rpm port velocity is king. How many people drive to reno over 4000 rpm?

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