Camshaft and Dist Values
 

I am cleaning out a bunch of old parts that my father collected when he was racing in the late 60's early 70's. It's all packed in the attic, so as I go down there, I'll be digging stuff out. I can figure out what the stuff is, but don't really know what the stuff is worth, if anything. I have a couple camshafts - One is an early (rear oil groove) 3863144 The other doesn't have a rear groove and is a 3904366. I also have a couple distributors. One is a 1111109 with a date code of 5 J 13. It has been converted to some type of electronic ignition, so the points are gone, but otherwise it is in good shape (still has the orange overspray) and the vaccum advance is still there. The other is 1110874 with a date of 7 B 18. That is complete and in good shape as well. This board might not be the one to post for that one, but since I posted the others, I figured I would put it up. TIA to anyone who can help.
Dan

Re: Camshaft and Dist Values
 

*Camshaft casting #3863144,(Chevrolet recognizes it as #3863143),originally came on the 1965 Solid Lifter 396/425HP engine.
*Camshaft casting #3904366,(Chevrolet recognizes it as #3904362),originally came on the Solid Lifter 396-402-427-454 engines from 1966-1971.

*Distributor #1111109 was used on 1966 Chevelle & Passenger Vehicles with 396/325HP with either Man. or Auto Trans.1965-September-13th is the date code.
*Distributor #1110874 was used on 1957 Chevrolets 265/162HP with Auto. Trans.1957-February-18th is the date code.

Values are anyones guess today..

Re: Camshaft and Dist Values
 

What's the scoop on the 3904366 camshaft? Is it an old, original one? The reason I ask is, I am involved in Pure Stock racing, and I've been looking for a known *original* LS6/L72/L78 camshaft to run through the cam doctor and check the specs versus the current reproduction cams...so I might be interested? Any help is appreciated! https://www.yenko.net/ubbthreads/imag...lins/beers.gif

Re: Camshaft and Dist Values
 

Chevrolet shows the specs on it as:
.520 intake lift
.520 Ex. lift
316 intake duration
302 Ex. duration
1.70 rocker ratio

Re: Camshaft and Dist Values
 

With the clearance set at .024" .028" you get .496" on the intake and .492" on the exhaust. Over the years GM opened up the clearance specs from .020" .024" to the later .024" .028" This affected the power characteristics of the engine especially the bottom end torque output. Tight clearances would help in launching on poor traction tires.