69 427/390 rebuild performance with cam & pistons

[Don W.]

Any input on what the impact on compression ratio and performance these key parts might have on a '69 427, 390hp engine that was rebuilt in the mid '80's? These items are off a reciept from the previous owner dated 1987:

L2300F X030 Forged Pistons
260 crane cam
7208 timing chain & gears
205-613 030/000 re-ring kit
SH 6165 Cam Bearing
Surface heads
Resize 8 rods

[Don W.]

Re: 69 427/390 rebuild performance with cam & pist

Here is some more tech info that may help:

260 crane cam
http://www.cranecams.com/?show=brows...tType=camshaft

or
http://www.cranecams.com/?show=brows...tType=camshaft

L2300F X030 Forged Pistons

http://www.sdparts.com/product/L2300F-30/ForgedPiston0140DomedCloseChamber4280Bore376Stroke6135Rod427BBChevrolet.aspx

http://store.summitracing.com/partdetail.asp?part=trw-l2300f

[Joe L.]

Re: 69 427/390 rebuild performance with cam & pist

Don-----

The pistons are going to give you about 10:1 compression ratio, depending upon other factors like amount machined from original heads at rebuild or prior and thickness of head gasket used.

The Crane 260 cam is going to give performance APPROXIMATELY equivalent to the original L-36 cam.