[steelybill]

I wouldn't even think of fooling with the 4.1 in my old Caddy. I'm happy it keeps running. The term HT, as in HT4100 (High Tech) is a real joke in my opinion. What the hell is so high tech about it? For something called high tech, they sure have more than their share of problems. Iron heads on an aluminum block instead of the the other way around? What the hell were those people thinking? The oil drain-back from the top end is really a bad design.
I enjoy driving my old '85 Fleetwood FWD, and wish I had a brand new one, but it will never be a neck-snapper for performance. The rack/pinion steering is great compared to the old gearbox etc. And it gets great gas mileage.
The transmission is what worries me sometimes. Hopefully it will hang in there for a few years. I've had the engine out twice, for cam problems, and the distributor was too tall to sit in the block without binding the bottom of the gear on the washer in the block, and taking the cam out for the second time and galling the bottom of the gear. High Tech I tell ya! Had to make some shims on the CNC to raise the distributor for a bit of end-play in the shaft. I must be a real glutton for punishment to keep this thing going.