Quote:
Originally Posted by Alan P.
...From what research I've done it would appear that a 331 motor would be as large a displacement motor that I would want to go and still achieve the high RPM's.
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firstly - ditto
secondly re: your 331 engine displacement - are you confusing stroke with displacement? Stroke is important in high revving engines because the longer the stroke the faster the piston has to travel to get from the top to the bottom - the higher the piston speed the more stress on it (the piston) when it has to change direction.
If you go to one of the after-market blocks with a 4.125 bore then a 3.25in stroke will give you a 347 (i think) whereas at 4.03in bore the engine would be a 331.
Traditionally the higher revving engines were nicely over-square (bore>stroke) and conventional (historic) theory held that having the stoke at 75% of the bore was the optimum level (like the 302).
However with the superior parts and materials today I'm not sure that that holds.
Just FYI there is guy in our club who regularly runs his 347 up to 8k (solid cam) and he also built the engine for another club member who's shift point is set at 7400rpm on his hydraulic cam windsor 302 - both are EFI running Edelbrock heads/manifold and both are regularly street driven and exhibit very sociable behaviour. I would guess premium ULP.
I'm just saying this so you know that what you're after isn't really that unusual - it's just a bit pricier.
Have you got that book on performance windsors? A bit dated now but lots of info to help you balance the pros & cons of different configurations.
LoBelly