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Mod | | | Forums66 Topics128,037 Posts1,055,467 Members48,424 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Dec 2010 Posts: 253 Shop Shark | | Shop Shark Joined: Dec 2010 Posts: 253 | I'm trying to help out a friend who has a coolant leak at the back of the motor in his late 50's chevy pick up that has a small block V8 probably a 283. I'm thinking there is a rotten freeze plug in the back that is leaking but I'm much more of a staight six guy than SB v8's so can anybody tell me where the plug or plugs would be on the back of that motor or for that matter another possible source of leaking coolant originateing from the back?
-Mike-
1945 Chevrolet G 506 1.5 Ton Military 4X4
1967 Jeep Cj5 with 283 SBC
| | | | | Joined: Feb 2004 Posts: 29,751 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,751 | Two possibilities- - - -yes, there are freeze plugs behind the flywheel, one on each side of a small block V-8, and there's also a coolant passage at the extreme back end of the intake manifold on each side where it meets the cylinder head. A seep leak there can run down the back of the block and look like it's coming from the bellhousing area. Leaks don't run uphill- - - -coolant or oil- - - -always look for the highest wet spot!
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Dec 2010 Posts: 253 Shop Shark | | Shop Shark Joined: Dec 2010 Posts: 253 | Thanks, I'll pass that on!
1945 Chevrolet G 506 1.5 Ton Military 4X4
1967 Jeep Cj5 with 283 SBC
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