i wants the differnce's in the 283 302 327 350 383

[Guest soulfly454]

i have a 283 in my 71 z and im wondering if there's anything differnt in the kinds of heads i should use the headers ... with the other small blocks i have lots of parts from 350s around thaht i could use and i would likr to know if the will work and if not whats the best high rpm sbc parts for my 283

[Georgia Flash]

Hello and welcome to our little world, there was a recent post about the 283 that had a lot of responses. If you look at the last few posts in the chevy 350 board I'm sure you will find it. Again welcome to Hybrid.

 

Hey I looked it up for you, go back to page three and look at the post called "why a 283" hope this helps.

[Guest Anonymous]

If you have a later 283, the next time you rebuild the engine, have the block sonic checked. You might be lucky enough to have a thick-wall block capable of being bored to 4.00". The original '67 Z-28 was based on this block with smaller main and rod journals than the later 302/327/350 blocks.

[Mike C]

I don't know that I completely understood the wording in your initial post... 265, 283, and 327 through '67 all are small journal motors. 68 and later 327, 307, all 350, 267, and 305 are all large journal motors. 2.45 main journals and 2.1 rod journals vs. 2.3 and 2.0. The small bore of the 265, 283, 307, and 305 (we'll avoid the 267 at all costs...)cannot use the large valve heads, 2.02/1.6. Any headers that fit one head should fit all. '68 and earlier heads don't have the accessory bolt holes for use with the long water pump accessory drive systems. Like mentioned above, the 302 is the best choice for a 3" stroke crank since the 4" bore enhances breathing significantly. Just the cost of pistons is horrendous.