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Discussion Starter · #1 ·
today I removed the engine installed in project 65 coupe.
was a 6 hole bellhousing & flywheel said "67 289" in crayon.
(salvage yard markings). I was losing coolant somewhere out
the back of block, hav'nt figured that out yet BUT coolant did
readily flow out flywheel bolt holes, is this normal ? I'm thinking something has cracked inside. the engine did have all
frost plugs pushed out, replaced those BUT still leaked coolant.

so...............should coolant be coming out flywheel bolt holes?
(flywheel off, first bolt out = poured coolant)
 

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Discussion Starter · #4 ·
yes unfortunately - the bolts that bolt the flywheel to crank are
bleeding coolant when removed. the engine was sitting since
late 80s / early 90s. yanked it out today, took flywheel off to see where the coolant leak was on back of block. to my suprise the leak was @ rear main area between crank & seal and also between oil pan & seal.
I thing I'll just get a reman 289 or find another one, this one appears to
be leaking coolant internally.
 

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It might be easier to simply get a jy 302 and swap it in place of the 289.

I've never heard of such a leak btw. Either the block has a MAJOR crack in it - either on a cylinder on the valley side, or at the bottom of a cylinder - or more realistically, the intake or heads are not sealed correctly. I would think that a gasket is blown out.
 

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I am thinking that the manifold to cylinder head gasket at the rear of the block is either bad, or the manifold holding bolts lost torque. In either sence, the joint leaks, and the coolant is dribbling down the backside of the block, onto the clutch, and then puddles at the lip of the flywheel.

Wash down the backside of the block and take another look for the origin of the leak. I have some 1967 California Air heads here all with significant rust around the ends where the coolant flows. If the genis before you did not clean the surfaces well enough, the gaskets will not seal very well. Ever.

Wm.
 
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