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In Reply to: RE: Engine Math...a little posted by mondial on April 20, 2021 at 18:34:47
The 307 had a smaller bore than the 305 or 350. Unsure why Chevy offered both, perhaps trying for more torque (longer stroke...)
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"The 307 had a smaller bore than the 305 or 350. Unsure why Chevy offered both, perhaps trying for more torque (longer stroke...)"
The 307 was an Olds engine.
307 an Olds motor? Not that I'm aware of. It was offered in many GM vehicles, definitely not Olds specific.
Thanks Grant !
Chevy did a LOT of mix nd match with I don't offhand know how many bore sizes and available cranks.
The 302, for example? 327 bore of 4" and a 283 crank of 3"......Lots of rev potential and a real screamer and teh drag strip....
The 307 was the OPPOSITE. A 283 bore and 327 crank, making a low-perf stroker.
than it gets really weird, on up the the 400 and the '383 'crate' motor.....
Too much is never enough
"Chevy did a LOT of mix nd match with I don't offhand know how many bore sizes and available cranks."
Chevy did a few things we liked. First of all hiring Duntoff, the cam genius. And all Chevy trannies fit everything. You could go from a three on the tree to a THM400 as long as it fit the body. It would bolt up but you might have to see the driveshaft guys.
And now that I think of it a 3307 may have been installed in some Chevies. they had Cadillacs with Olds engines, and I had an Olds Cutlass that had a Vette engine in it, still 350 but it really felt different. Actually that car may have been hot, I should have pulled the engine for something else. But it ran damn good. When you kicked in passing gear it had a bit of a strange sound like Whoooooooop increasing in pitch as the car accelerated. I had plenty with Olds engines and while they were better out of the hole, this thing, well I didn't have a handy one to race with it. I think my sister had one but it was not running right, actually needed a head gasket I think, but it did well at higher RPMs. But that is not what I wanted to race. I wanted it how it ran right, like when new or close.
Buddy with a '67 or '68 SS396 Malibu of 325hp.....factory.....
Raced another buddy with a 10 year OLDER Olds with some Big V8......In 3 races the Chevy won 'em all but by no more than 1 1/2 car lenghts PER race. Hardly a dominating win.
Later models of what came to be known as the 442 were nice and I'm guessing certain versions are even collectible....
I don't know enough about it, but an Engineer at work.....VERY buttoned down (tie every day) had a son who raced a BUICK with small V6 / Turbo...... Guy was Chinese and a real RACER. But from the look of him? STraight guy with worst habit being unshined shoes.....
And now that I htink about it? How about the SOHC 6 from Pointiac? VERY quick and some models came with a 4bbl.. I wonder if THEY have a following?
Too much is never enough
Edits: 04/21/21
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