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I would go with the bigger bore if you want to use w8 or 9 heads, you just cant fit 2.20 intake valves in a 4.10 bore

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Correct, that is why he said above he doesnt think it has to be a w8 or w9 deal. with an indy head 4.100 with a long crank would be fine.


If i wanted a bad [Edited by Moparts - Family Friendly Site - Keep it clean] small block on the cheap, it would be an r5p7 motor, can get a fresh, COMPLETE, and ready to run motor that will make 700 horsepower( likely more)easily for less than you can build an eddie headed 416 that would make 500 ponies, much less an indy headed deal you are going to have 15k in or more when all is said and done.

freind of mine locally did this exact thing and went 9.40's with the supplied belt driven water pump, and junk headers he fabbed up off a w2 motor. And it ran super cool at the track with even back to back laps. Drove it around on the street as well.No telling what it may have run had he played with it a little more than he did.