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#1
06-17-2025, 08:48 PM
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I.D. Bellhousing
Looking for info on this 1-piece aluminum bell. Looks to have a drain hole of about 1" diameter, possibly added. Owner is selling as a sbc bell and no other info from him. Thanks for any help you can provide, I appreciate it.
Dave 
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#2
06-17-2025, 11:20 PM
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Looks like an old truck bell. Size of the pilot hole is too large for a car and the 3 point throw out bearing bracket is nothing I've ever seen on a car bell, but never say never....
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Mitch 1970 Chevelle SS 1966 Chevelle SS 1967 Camaro ss/rs 1938 Business coupe, street rod 2000 FXSTS, original owner, 13k miles
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#3
06-18-2025, 11:56 AM
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Looks like a hydraulic TOB. The hole is probably a clutch inspection hole instead of a drain hole.
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Freddie 1969 Camaro RS/SS396 (427) 4 speed
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DAVE H (06-18-2025) | ||
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#4
06-18-2025, 01:17 PM
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Thanks for the replies. The pilot hole (to me) appears to be standard diameter. They did mention that it has a "tilton" style TOB for what it's worth and believe it to be aftermarket. I've been able to "categorize" bellhousings from a distance (swap meet) by visually measuring the distance from the edge of the pilot to the edge of the machined pivot hole.. a standard passenger car bell will have a distance of about 3/16"-1/4". A small pilot bell from '63 will have nearly a 1/2" distance. The truck bell (from my experience) has virtually no gap between the pilot and the pivot hole. Also, this has no reinforcement rib along the starter area like a 621 vs a 403.
Dave
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