Jump to content
HybridZ

? on CR


Guest Lee Smith

Recommended Posts

Guest Lee Smith

I have a 69 350 4bl

 

Chilton says 10-1 CR 295 hp. with a 4bl. It

needs a valve job.

I have later heads that the valves good in. No

idea what yr.

Will I lose the 10-1 CR? The later 350s have

8.5-1.

I like the thought of 295 hp. stock, low $$.

I am doing a 77 V8 swap.

 

Lee

 

PS I have 3 finished cars, stock. Pics on ZDriver

Rides 78-82-83 Lee Smith If interasted.

Link to comment
Share on other sites

You will lose the compression to some degree. The later heads will probably give about 9:1 with the early pistons. I would rebuild the heads on the '69 with new valves, exhaust seats, and guides. David Vizard, "How to build and modify small block chevy cylinder heads" Says the closed chamber heads are worth 20 more hp than the open chamber heads, all else being equal. Or just by a set of aftermarket heads with the 64cc chambers as they have learned a lot about combustion chambers in the last 30 years.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...