Will a 283 Crank (Forged Or Cast) Fit in a 305? if so what CID would you get?, would it be a high reving engine?, just an idea size 305's are a dime a dozen.
You can take an LT1, put in a 283 crank, and build a high revvin 302 sbc LT1, I think its 283, or it might be the really small 260 sbc (4.3 V8, not the v6, but 4.3 v8) You'll probably get 9,000 rpm's.
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06:10 PM
V8Guy427 Member
Posts: 98 From: Waterloo,Iowa Registered: Oct 2003
so does the 283 crank only work in the LT1's? or would it fit in an 80's 305/335?
-Chris
A 283 crank steel or cast should work in a pre 86 305 with the 2 piece rear seal. You will have to get custom pistons, big to small journal main bearing kit, use the 283 balancer and use the small journal 5.7 rods. The 305 bore and stroke is 3.740" x 3.48" stock. You could use a stock 265 piston 3.750 if you overbore the 305 .01 but would probably want to use .030 over 265 pistons if the bores are worn. Or you could just get a 265 or 283 and save yourself the trouble I would get a 327 block and put the 283 crank in it. Awesome motor, I had a 69 302 z28 one hell of a high revin motor.
[This message has been edited by Erik (edited 11-22-2003).]
who makes that setup i have only seen spacers for 350 crank in 400 blocks
Last time I checked a company called Race Engineering made them as well as several others. Its been awhile but last time I built one I am pretty sure I got the kit from Jegs
[This message has been edited by Erik (edited 11-22-2003).]
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10:12 PM
TONY_C Member
Posts: 2747 From: North Bellmore, NY 11710 Registered: May 2001
Stock 3.74" 305 bore and 3" 283 stroke gives a 281.8 cu in displacement. get a four inch bore block and build a 302. Keep in mind, if you want rev it, you probably should go with a carb and the right manifold, a TPI setup isn't gonna rev because the runners are too long. You could go to a min-ram tpi to get the revs but it's about $3500.
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11:45 PM
Nov 23rd, 2003
V8Guy427 Member
Posts: 98 From: Waterloo,Iowa Registered: Oct 2003
what size rod would be better 5.7 or 6.0 to keep the revs high or does it not matter
-Chris
The 6.0 rod is better. I dont think it would be cost effective to do so but if you use the 305 block and 283 crank with a 6.0 rod, the dwell at TDC would be longer and the rod angle would be less than a 5.7, putting less stress on the cylinders and less friction. No matter, you would have to have custom pistons made. If I was going to pour money into a small displacement SB, I would build a 302( 327 block with 283 crank) with a 6.0 rod rather than spend the money doing the same on a 305
[This message has been edited by Erik (edited 11-23-2003).]
I would get a 327 block and put the 283 crank in it. Awesome motor, I had a 69 302 z28 one hell of a high revin motor.
