Thread: 283 with small journal 327 crank

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You can probably pick up a 305 or 307 cheaper than trying to upgrade the 283 and be ahead in many ways,you will have a large journal crank and rods which are stronger and a crank with a bolt on Harmonic balancer, a lot of 283's were pressed on.A 305 HO from a Camaro would be your best buy,there should be a fair amount out there for a good price since guys will swap for 350's and sell them cheap.

just curious; I heard gm did not build many 307 engines..If true, why
did they not build many? I have owned, 283, 305, 327,350, &454, but
never a 307...rdobbs