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Author Topic:   Aluminum head temps

Posts: 430
From: Sumner, WA
Registered: Dec 2001

posted 10-28-2002 12:48 PM     Click Here to See the Profile for Kyle   Click Here to Email Kyle     Edit/Delete Message   Reply w/Quote
What is the max coolant temp a 302 can see before aluminum heads warp?

Kyle Laramore

63 Fairlane: 302, Victor Jr. heads and intake, solid lift cam, super comp headers, MSD 6al and duraspark, 650 DP carb, C4 w/ Hughes converter, man. valve body

66 Mustang coupe: 289, offy intake, Holley 600 vac. sec., long tube headers, 3spd stick

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Posts: 286
From: Southern Cali
Registered: Jun 2000

posted 10-28-2002 07:14 PM     Click Here to See the Profile for H8CHEVY   Click Here to Email H8CHEVY     Edit/Delete Message   Reply w/Quote
Kyle, I believe the hottest you want to run it before shutting down would be somewhere around the 240 mark.. But I could be wrong...

"In the wise words I was once told bye Jiggy"

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V8 Thumper

Posts: 4681
From: Phoenix, Arizona
Registered: Dec 2001

posted 10-28-2002 08:54 PM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
Aluminum moves (expands/contracts) a BUNCH . I'd think the 230-240 range is asking for head gasket failure

1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, all Blue Oval, no blue bottle... steer it with your right foot

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Posts: 9533
From: Sonoma,CA,USA
Registered: Mar 2000

posted 10-29-2002 12:20 AM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote

I'd be more worried about how you cooled the engine after it "boiled over". Definately do not put cold water into the radiator after a boil over, it will distort/warp even a cast iron head. Let an aluminum head'd motor cool naturaly and it'll be fine. BUT, give it enough cooling system and don;t worry about how hot you can run it.


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