1967 Z-28 Parts Wanted

[68z302]

Sam,
Although the 283 crank will fit it all depend how picky you are about your resto.
The bolting flange for the flywheel is different on a 302 VS a 283 crank. I can't remember which is which one has a bolting flange that is a full circle, the other has a notch in it. Plus the Z28 crank is tuffrided.

[Salvatore]

Rob, You are correct. They were tufftrided. Most off that wears off in time. I never really saw a 302 or LT1 crank where that really mattered. I believe that the 1967 302 crank is a circle with a V cut into it. Anyhow it would all work. There are a couple cranks on e-bay and also I think there is a harmonic balancer available where the key way does line up with the timing mark. The block can be a 4 in bore job with small journals, or you can buy bearing spacers if a small journal is not available. To me the internal parts arn't as important to a resto. as the bolt on parts, as long as it is a REAL 302 with the correct compression. I was hard pressed to get 30 over pistons for my 1969 Z. We had to fly cut a set of TRW 12:1's. There are manufactures out there: Venolia, C+P etc, but are around $800.00 a set. (forged) Correct #'s and date carb, intake, distributor,heads, pulleys, fan, valve covers, correct heads on the intake bolts correct coil etc. is what I try to get first. Correctly dated block is important to me also. Cams, rods,whatever crank I can get 1967 Z original first choice if it is good and reasonable, or I could live with a nicely preped 283 crank. Just my opinion. Sam [img]/ubbthreads/images/graemlins/biggthumpup.gif[/img]

[rafbody]

The 302 crank did have one notch out of it but the exact crank was also used in 283's. The only difference was the 302 crank was tuffrided. I have examples of both.

Russ

[Salvatore]

Ok Russ, I thought they may be the same, but wasn't sure. I think you can get one re-tuffrided if you want to. I don't really think it is necessary. I bet you Ben Wenzel with the D/S national record 1967 Z/28 doesn't worry about his crankshafts. They are probably all 283 cranks he has. Sam [img]/ubbthreads/images/graemlins/[/img] [img]/ubbthreads/images/graemlins/burnout.gif[/img]

[rafbody]

I have talked to Ben at the races a few times. He has a great car. Just for clarification, most of the 283 cranks I have seen have a round flywheel flange but, some of them are the same as the 302.

Russ

[JoeC]

Did they have a tapped hole in front of crank? I have one with notch rear flange no tapped hole in front. Seems strange that they relied on just a press fit to hold the H B on.

[Salvatore]

I believe they did Joe. Sam

[rafbody]

I have not checked the 283 cranks I have but if it is a 302 crank, I am pretty sure it was tapped. The 302 had an 8inch harmonic balencer where the 283 had a much smaller one.

Russ