Olds 455 F block with Olds 350 #5 heads??

« **on:** October 03, 2008, 09:07:50 PM »

Hi,
New to Olds power. I Bought a 73 Kona with a 455. I was writing down casting numbers and noticed that the block is a 68-70 396021 F code. The heads are 403859 with NUMBER 6 at the lower corners. These are the casting IDs of Olds 350 heads. Anyone heard of this??

thx
Povertyjet

« **Reply #1 on:** October 03, 2008, 09:22:08 PM »

I do know that this was done to increase the C/R, but not sure about yours, the chambers are smaller on some of the SB heads, the biggest issue is the angle of the pushrod holes.

Here is a link to more info than you can use... these 442 guys have it worse than we do

http://www.442.com/oldsfaq/ofhed.htm#Heads

Let us know what gives.

GT

« **Reply #2 on:** October 03, 2008, 09:54:32 PM »

I have heard of those interchanges, but mostly 350 heads on a 403 for the c/r boost...I been on the internet all night lookin for a interchange similar to mine. It does have the big pan, but I don't know if any of the other oiling mods have been done. What would I look for to check...

pjet

« **Reply #3 on:** July 25, 2013, 09:21:09 AM »

Pm sent

povertyjet

Olds 455 F block with Olds 350 #5 heads??

GT Jets

Re: Olds 455 F block with Olds 350 #5 heads??

povertyjet

Re: Olds 455 F block with Olds 350 #5 heads??

skidooman

Re: Olds 455 F block with Olds 350 #5 heads??