429/460 Overheating Issue

[Tom Wells]

What Gary (Gaz64) said...

It's the rectangular opening just above the spray can cap in the first photo - that needs to be at the rear of the block. If you look at them, the 460 head gaskets have the other end blocked off - it goes to the front. Definitely contributes to overheating. Sorry 'bout that!

Tom

[cycleguy55]

Originally Posted by Tom Wells

What Gary (Gaz64) said...

It's the rectangular opening just above the spray can cap in the first photo - that needs to be at the rear of the block. If you look at them, the 460 head gaskets have the other end blocked off - it goes to the front. Definitely contributes to overheating. Sorry 'bout that!

Tom

That makes sense - that opening provides coolant to the rear of the heads.

Flow is front to back in block and back to front in heads - correct?

[Gaz64]

Originally Posted by cycleguy55

That makes sense - that opening provides coolant to the rear of the heads.

Flow is front to back in block and back to front in heads - correct?

Correct.

[Speedwaypj]

Thanks for ALL the feedback; I can see the square edge of the head gasket at the rear of the left head......So I am looking forward to fixing that....Again, thanks to everyone! Pic a little fuzzy (evidently I might have been also when installing it) but it shows the wrong orientation.....but good news....The right side is good! So I'll see what I can get done today (Promised wife a winery visit today)..
Thanks....PJ

[Speedwaypj]

got it pulled apart......wrong orientation...but that's a good thing if it solves my heat issue....off to the winery.....Darn

[cycleguy55]

Originally Posted by Speedwaypj

got it pulled apart......wrong orientation...but that's a good thing if it solves my heat issue....off to the winery.....Darn

Happy wife, happy life. Consider the winery visit an investment in your future happiness. Perhaps you can draw analogies between wine colours and Cobra colours. That would be the reds, not the whites. Or beiges...

[Speedwaypj]

Appreciate the input from all!
I replaced head gasket, and intakes...noticed old intake gaskets had center water port closed off for manifold. Replacement intake gasket has it opened. Should help. I built a shroud that covers about 2/3 of radiator. (I'm running 6 blade flex fan). Still seems to get hot while idling(235 F). If I use aux garage fan it goes down to 210 F. So, I guess I'll find out when I have permanent shroud....and if needed I'll add elec fan.......... The reason that I am running a mechanical fan is to move more air through the engine compartment to try to relieve the inherent heat of a Cobra. (Timing is at 16 BTDC)