Belaircouple
Member
I can't remember if its they 283 with a 327 crank or the other way around, the 327 with 283 crank to destroke it and make it rap out? 
283 destroked
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Belaircouple
Member
So If we put a 327 crank in a 283 and bore it .40. Would'nt we get a 306 that would run hard?
the factory had a 307 which was dimensionally the same as a 283 block with 327 crank.
the factory had a 302 which was dimensionally the same as a 327 block with 283 crank.
QUOTE
"So If we put a 327 crank in a 283 and bore it .40. Would'nt we get a 306 that would run hard?"
283 bore: 3.875 + .040 = 3.915 x 3.915 x 3.25 stroke x 6.3832 = 313 inches.
just a sugestion, you can get a crate 350 for way less $ than strokin a 283.
the factory had a 302 which was dimensionally the same as a 327 block with 283 crank.
QUOTE
"So If we put a 327 crank in a 283 and bore it .40. Would'nt we get a 306 that would run hard?"
283 bore: 3.875 + .040 = 3.915 x 3.915 x 3.25 stroke x 6.3832 = 313 inches.
just a sugestion, you can get a crate 350 for way less $ than strokin a 283.
Chevy Did That
They made the smog era 307. A little better on torque than the 283, but very rpm limited. Wrong bore to stroke and too short of rod length. Small bore limits the valve size that can fit the opening. Can't notch the bores like the W engines. You need at least a 4" bore for a performance small block. If you are just beating around the street, anything works. You still have the cost of custom pin height and the cost would be more than off the shelf pistons and a 350 block. If you have the 327 crank , you might as well make the 327. Same block as 350. Good cheap pistons off the shelf.
They made the smog era 307. A little better on torque than the 283, but very rpm limited. Wrong bore to stroke and too short of rod length. Small bore limits the valve size that can fit the opening. Can't notch the bores like the W engines. You need at least a 4" bore for a performance small block. If you are just beating around the street, anything works. You still have the cost of custom pin height and the cost would be more than off the shelf pistons and a 350 block. If you have the 327 crank , you might as well make the 327. Same block as 350. Good cheap pistons off the shelf.
Belaircouple
Member
Yeah but who wants to buy a crate engine, thats no fun. I got the 283 for nothing. I still have the 348 that might end up in anyways. I would rather have a 327. So I got lots of choices. Its not ready for the motor yet but close.
hrlykngt
Well Known Member
re
283 crank in a 350 is the same displacement as a 327 block, you have to run bearing spacers for the large journal block unless you can get a factory 302 crank. On a 400 you have 2 double stack (dont laugh I have seen it done) and pin the spacers to run a 283 crank in a 400 block. You would be surprised at the combinations I have seen built for dirt track motors.
A good source for cheap pistons for a 302 is claimer pistons found in the back of circle track magazines and other dirt track racing publications. they are usually cast pistons but you can get some good compression ratios.
As has been said these are high revving motors, you can take advantage of gearing when running one of these setups. They like exotic intake systems and free flowing heads with a bunch of air moving about.
283 crank in a 350 is the same displacement as a 327 block, you have to run bearing spacers for the large journal block unless you can get a factory 302 crank. On a 400 you have 2 double stack (dont laugh I have seen it done) and pin the spacers to run a 283 crank in a 400 block. You would be surprised at the combinations I have seen built for dirt track motors.
A good source for cheap pistons for a 302 is claimer pistons found in the back of circle track magazines and other dirt track racing publications. they are usually cast pistons but you can get some good compression ratios.
As has been said these are high revving motors, you can take advantage of gearing when running one of these setups. They like exotic intake systems and free flowing heads with a bunch of air moving about.