455 overheating issues at intake , not the block

wskirvin

wskirvin

Greasemonkey
May 22, 2017
211
43
Indianapolis, In
Get some felpro blues and spary both sides with this

Thats actually what i have Sitting in the garage right now. I bought the Felpro head set that has the blue gaskets and i already have a can of the copper coat. so hopefully i'll get it going soon.
 
olds307 and 403

olds307 and 403

Comic Book Super Hero
Oct 14, 2008
4,519
113
Melville,Saskatchewan
My 88 looks like it is Copper coated, so go with the theme. Just be safe and do everything. Honestly, I have never blown or had Felpro gaskets leak. I have blown a Corteco head gasket. To be fair, it was 1/2" 5A heads on 7/16" 76 Olds 350 block without adapters.
 
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wskirvin

wskirvin

Greasemonkey
May 22, 2017
211
43
Indianapolis, In
Well I'm definitely hoping I'm outta the woods now. Pulled the top end apart and took the heads to be pressure checked and magnafluxed just to be safe, installed exhaust cross over plugs. Then put everything together with new Felpro blue head gaskets. while i had it tore down, i went ahead and replaced the milodon water pump for a flow kooler one..... same housing, but new one has a billet impeller with more fins. had it running and sounds good, temps at their highest got up to 205-210. probably could use a better radiator and fans than the cheap $180 ebay stuff i have, but temps were way better and no boiling or compression in the coolant!
 

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