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-   -   thermostat housings (https://forums.maxperformanceinc.com/forums/showthread.php?t=885527)

Mario64 05-21-2026 11:06 AM

thermostat housings
 
4 Attachment(s)
hi guys:
this 64 gp is my first pontiac. all my years has been devoted to caddys, all 500 ci's. i cannot find a thermostat housing to replace the one on my caddy. the thing i found out is that my 64 gp has a thermostat housing bolt spread of 3" matches the caddy bolt spread. chevy's spread is larger and it is difficult to get a good seal. here are two picts, one caddy and one off the 389. the caddy is straight up and the pontiac is slightly angled.
anybody know of a pontiac housing that is straight up that would match the caddy? i could even use one that leaned in the opposite direction of the caddy.
thanks.
mario64

jwcfbd 05-21-2026 12:23 PM

March performance has this one. https://www.summitracing.com/parts/m...5/make/pontiac

Mario64 05-21-2026 03:13 PM

hi jwcfbc:
thank you for that heads up. i went to march's website and found a black one BTH-101-08 and sent them an email asking for some dimensions. we'll see how long it takes to get back to me.
thanks again.
mario64

Mario64 06-01-2026 02:22 PM

1 Attachment(s)
march never responded. found a used, but better than min, replacement.
thanks all.
mario 64

694.1 06-01-2026 06:40 PM

The 56 & 57 were cast & straight up...


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