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Tech Talk => Engine Mechanical / Electrical => Topic started by: povertyjet on October 03, 2008, 09:07:50 PM

Title: Olds 455 F block with Olds 350 #5 heads??
Post by: povertyjet 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

Title: Re: Olds 455 F block with Olds 350 #5 heads??
Post by: GT Jets 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 :screwy:


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


Let us know what gives.  ;)

GT

Title: Re: Olds 455 F block with Olds 350 #5 heads??
Post by: povertyjet 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

Title: Re: Olds 455 F block with Olds 350 #5 heads??
Post by: skidooman on July 25, 2013, 09:21:09 AM

Pm sent