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  1. HT4100 4.1, 4.5, 4.9
    Does anyone here have this engine WITHOUT the Early Fuel Evaporation part? I just got done removing and reinstalling the throttle body. I'd intended to use a new gasket and ordered one from Rock Auto. It was obvious that it would not fit, because the holes for the injection stream were too...
  2. HT4100 4.1, 4.5, 4.9
    I have a 1983 Coupe DeVille with the HT4100, it has a problem involving a high idle at startup. The engine will race for a couple minutes until randomly throttling down; after that it may either idle normally, stall or periodically idle abnormally again for short periods. The issue can also...
  3. RWD DeVille/Fleetwood, Brougham 19xx-1996
    Hello all, so my question is will any small block fit into my 85 Fleetwood? Im looking at a 69 buick 350 carbed and i was wondering how different it would be to swap into the caddy rather than an olds 350 or chevy 350 or even an ls? I will keep the engine carbed as i can just get rid of more...
  4. RWD DeVille/Fleetwood, Brougham 19xx-1996
    I’ve got an 85 Fleetwood with a 4.1L. You know the shit HT-4100 we all know about. I need to know if it’s possible to somehow get a carb on it. I need to. If it is I’d probably have to get a custom custom intake manifold for it. Unless for some reason there are intakes from other motors that...
  5. HT4100 4.1, 4.5, 4.9
    So I am looking to buy a 1985 Eldorado with an HT 4100 V8 and have heard a lot of negative things about them. So, realistically, what engine would I be able to swap in that is reliable? P.S: Just joined this forum and am super stoked to join the community!
  6. HT4100 4.1, 4.5, 4.9
    Hello, I have a 1985 Seville and a 1984 Toronado complete swap happening and am curious to hear from the pros if the tail end of this project is getting into crazyville. So to be consise, I have a sweet, low mileage (40k) 85 Seville with a mildly leaky 4100. After reading these forums I was...
  7. HT4100 4.1, 4.5, 4.9
    I have a 1985 Fleetwood Brougham RWD with a 4.1L and a THM200-4R transmission. However, it started leaking engine coolant. After inspection, it is somewhere from the back for the engine - very possibly engine block. I am looking to replace this engine. I found a 1990 Cadillac Brougham with a...
  8. HT4100 4.1, 4.5, 4.9
    I have found a 1984 Cadillac Eldorado that on the listed website (Autotrader) reads 20,000 miles. Having read discussions on the HT4100 V-8 engine, I just wanted to dig further before i make a purchase that I may regret. My father has numerous GM engines (496,454,402-4 bolt main, and many...
  9. HT4100 4.1, 4.5, 4.9
    The Seville repairs are finished! Rusted wheels, front brakes along with rear air struts. Gave it a good cleaning inside and out while I was at it. Now to get back to the 83 Eldorado... When I went to retrieve it from the warehouse I noticed quite a puddle of transmission fluid on the floor. I...
  10. Seville and Eldorado Forum
    Look at this ricer Caddy. Even has a NOS, neons, and a body kit. I guess you can't call it a ricer since it really is fast, 14.1 in the quarter mile. But you have to admit, if you didn't know that was a Caddy, you would think its a ricer Civic. I actually think it looks pretty nice, just...
  11. Informal Lounge, Introductions, General Discussion
    Hey. Being that someone mentioned his name in the Northstar section, I thought I'd ask.. Why hasn't he signed up here? Is it some sought of sentimental thing with the GM forums?
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