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l27


hell_raiser

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hey,

I have a l27 in a 94 regal will the supercharger bolt to her? its got high km's but hey i wana see how long she will last lol :burnout:

 

Don't even think about it. The supercharged series 1 3800 in the Bonnevilles and Park Avenues have a stronger bottom end than the L27's do. Stronger rods and pistons. It is a LOT easier and cheaper to drop an already supercharged Series 1 in your car than it is to supercharge your L27. Trust me I've looked into this a lot. People have tried and there's way too much work to be done. If you have to pull the engine to swap pistons and rods, might as well swap the whole engine.

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I imagine that you could probably bolt the Series I L67 heads onto the L27, but then you're talking about swapping the crank pully, associated pulleys, fuel pump, doing custom wiring. It's far from worth it.

 

The Series I L67 blows anyhow.

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I imagine that you could probably bolt the Series I L67 heads onto the L27, but then you're talking about swapping the crank pully, associated pulleys, fuel pump, doing custom wiring. It's far from worth it.

 

The Series I L67 blows anyhow.

 

The heads are identical between the 93+ L27 and the Series 1 L67 (and both flow like shit; less than the Series 2 L67, which flows even less than a 3x00 engine). Its the rods and pistons that won't like the boost. There's a thread over on the Bonneville forum titled "6 good reasons NOT to supercharge an L27"

 

http://www.bonnevilleforum.com/showthread.php?t=276230&highlight=supercharge+L27

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Poor fuel economy, poor performance, yawn-inspiring powerband.

 

But hey, it was the first of it's kind. Unfortunately like the L27 and all early 3800s out there, there are much more cost effective powerplants to pick from and I don't see the point in even dicking with an SI L67.

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I can completely agree with the Series I L67 being a boat anchor :lol:

 

You toolbag! You were just talking to me about putting one in a gen1 regal the other night!

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I can completely agree with the Series I L67 being a boat anchor :lol:

 

You toolbag! You were just talking to me about putting one in a gen1 regal the other night!

 

For the explicit purpose of building a "concept" Regal GS that GM might have built back in the early 1990's.

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For the explicit purpose of building a "concept" Regal GS that GM might have built back in the early 1990's.

 

a turbo 3800 would have been more accurate for a late 80s, early 90s GM HO car...

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I would love a supercharged 3800 in my car, a series II though.

 

I can't say I'd lose anything. I'm inexplicably getting the mileage of a V8 right now anyway.

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The 3800 was in my opinion pretty much the best engine GM ever created. I've never understood why the only first gen W it was offered in was the Regal. I think that would have made a better platform than the 3.4

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The 3800 was in my opinion pretty much the best engine GM ever created. I've never understood why the only first gen W it was offered in was the Regal. I think that would have made a better platform than the 3.4

 

Easy killer! You'll get your head chopped off around here saying that!

 

I'll say it was certainly one of their best, but not THE best.......

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The 3800 was in my opinion pretty much the best engine GM ever created. I've never understood why the only first gen W it was offered in was the Regal. I think that would have made a better platform than the 3.4

 

Easy killer! You'll get your head chopped off around here saying that!

 

I'll say it was certainly one of their best, but not THE best.......

 

Certainly not from a performance standpoint, but from an ease of maintenance and repair, reliability, and fuel economy standpoint, it ranks pretty high up there. Even as far as performance goes, it's not a slug.

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I think the LQ1 was an excellent choice for the GTPs, Z34s, Int'ls, etc. High-revving, powerful DOHC motors were in, relatively unrefined clunky pushrods were out. This is not to start a flame war (and it better not, or it will result in vacations), but the 3800 was just better suited for a Buick. It was sort of torquey, simple and easy to fix so it appealed to the demographic.

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A powerful yet overly complicated, high maintenance engine doesn't appeal to me at all. I'll stick to the 3100 until I can get a supercharged 3800 Series II put in. I have no desire for an LQ1. No offense to anyone here who loves them... in my opinion, they aren't worth the trouble.

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A powerful yet overly complicated, high maintenance engine doesn't appeal to me at all. I'll stick to the 3100 until I can get a supercharged 3800 Series II put in. I have no desire for an LQ1. No offense to anyone here who loves them... in my opinion, they aren't worth the trouble.

 

Trouble? Frankly, I've had more trouble out of pushrod engines than the LQ1's... but then, I haven't had much engine trouble at all.

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Trouble? Frankly, I've had more trouble out of pushrod engines than the LQ1's... but then, I haven't had much engine trouble at all.

 

it's also likely that you take care of your vehicle, something 90% of car owners don't do.

 

OIL CHANGE? WHY THE HELL WOULD I CHANGE IT? IT'S OIL!

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I personally wouldn't think twice about picking up a low mileage Series 1 L67 to drop in the regal if one with the right price popped up. It would be a direct replacement to my engine, and swapping over the roller rockers I have would bring it up to if not over the performance level of a stock Series 2 L67. Granted, I have no idea what kind of fuel economy to expect, but that's a different story.

 

For the time they were released, they put down decent numbers. 225hp/260tq on the series 1 vs 240hp/280tq on the series 2. Its not really that big of a difference.

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