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Old 11-13-2007, 06:12 PM   #11
Deviousfred
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Default RE: official build up 289

I don;t have a lot of experience with tri-y headers but it would seem to me you would benefit more from long tubes with minimum 1 5/8" primary tubes if you're hoping to reach those hp numbers.
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Old 11-13-2007, 06:39 PM   #12
SalikDDD
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Default RE: official build up 289

tri's are already here - i didn't want longtubes due to moving crap around and all that jazz. technically the tri is a long..
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Old 11-13-2007, 07:31 PM   #13
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Default RE: official build up 289

use the 289 rotating assembly in the 302 block, thats the best combination as the cylinder walls go down a little further in a 302 than in the 289's which equals better piston stability. plus, the 302's are a dime a dozen.

also, PLEASE upgrade your rods bolts. i cannot stress how important it is to recondition your rods and upgrade the bolts to some 5/16 arp's (drilling out for 3/8 is a bad deal). also spend the 20 bucks on a arp oil pump driveshaft.

other than that i think you'll have a great running motor as long as those heads dont fall apart on ya
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Old 11-13-2007, 07:42 PM   #14
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Default RE: official build up 289

Contrary to popular belief, 302 cylinders are not actually longer than those in a 289. I knowa couple peoplewho haveactually mic'd them side by side, same length.

That said, if you have a 289 rotating assembly and a 302 block, no reason you can't put the two together (unless it's a one-piece rear main block)
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Old 11-13-2007, 09:24 PM   #15
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Default RE: official build up 289

Quote:
unless it's a one-piece rear main block
o'rly????



289 1 piece FTW? i think yes
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Old 11-13-2007, 09:44 PM   #16
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Default RE: official build up 289

so whats up with the Granada 302 - anything to pump it out to spec?
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