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HT 4100 Block Corrosion


85ELDOCAB

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are you leaking coolant into the crankcase?

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I believe that the 4100 can be easily replaced by a 4.5 or a 4.9. These engines are much better that the 4100 and are usually available used at a reasonable price.

Britt
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I believe that the 4100 can be easily replaced by a 4.5 or a 4.9. These engines are much better that the 4100 and are usually available used at a reasonable price.

I agree and there are plenty out there

GM FAN FOREVER

Nice, clean, luxury= fine automobile

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I believe that the 4100 can be easily replaced by a 4.5 or a 4.9. These engines are much better that the 4100 and are usually available used at a reasonable price.

The 4.5 and 4.9 engines were all transverse mounted engines. The 85 Eldorado had a longitudnally mounted HT-4100 engine.

Kevin
'93 Fleetwood Brougham
'05 Deville
'04 Deville
2013 Silverado Z71

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Can't the sleeves be honed? If not, they should be available new. Replace the o-rings at the top and bottom of the cylinders also.

It is MANDATORY to use the cooling system sealer pellets on the 4.x engines. Most likely, your intake gasket was leaking, not the head gasket. The gaskets have been improved over the years and once your engine is repaired, it will outlast the rest of the car.

Kevin
'93 Fleetwood Brougham
'05 Deville
'04 Deville
2013 Silverado Z71

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