V8 under the hood of a LeSabre??? - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 07-05-2006, 10:33 AM   #11
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Quote:
Originally Posted by Marik_bathory

the "dumb car" idea proposed here is simply put a dumb comment from someone who doesn't know any better.
Boy, I sure hope that wasn't aimed at me...

I did not make up the term "Dumb"

It is not meant as a derogatory remark,
it simply means leaving out the modern computer,
and all the computer controlled ignition and fuel delivery systems and replacing them with old school componets.

This is a common practice when putting modern engines in older cars.

Peace out, CD
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Old 07-05-2006, 12:59 PM   #12
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Quote:
Originally Posted by Custom88
Quote:
Originally Posted by LittleHoov
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now the 4.9 vs 3800 is a hotly contested issue on every fiero board. theyre at each others throats constantly. the bottom like is this. in identicly prepared cars (fieros in this case, fiero guys use S2 motors) a 3800SC car is faster than a 4.9 in the 1/4 mile. in the 1/8 mile the 4.9 will win every time. generally speaking the 4.9 is much cheaper than the 3.8.

wouldnt that be the other way around? I would thing the 3800 would win in the 1/8th and the 4.9 would win in the 1/4 with its longer legs? whats the reasoning behind that?
I believe that the 4.9'* are Pushrod engines just like the 3800 is. It has more torque than the */c 3800, but less horsepower, which is why explanation that marik gave seems accurate to me.
whoops, sorry, I just assumed it was a DOHC design, or at least made a lot of top end power, like all the other N* engines, I guess I should do my homework before I post.
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Old 07-05-2006, 03:10 PM   #13
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Quote:
Originally Posted by cactusdoug
Boy, I sure hope that wasn't aimed at me...
not directed at you, but at the comment itself. i've heard it before and always found it to be a derogitory comment, as though mechaniacal fuel metering was somehow a stupid way to go.
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Old 07-05-2006, 03:55 PM   #14
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Quote:
Originally Posted by Marik_bathory
Quote:
Originally Posted by cactusdoug
Boy, I sure hope that wasn't aimed at me...
not directed at you, but at the comment itself. i've heard it before and always found it to be a derogitory comment, as though mechaniacal fuel metering was somehow a stupid way to go.
I look at it this way.... Someone took a 3800 L36 in a Regal and installed a 4 bbl carb.... Not sure how they did it.... But they said they made 300 hp at the crank with the intake and carb...

When ever we replaced the caddy 4.1 in the early devilles we always used the 4.5 if we could find one.... the 4.1s were a nightmare...

The C and H bodies have very simmilar underpinnings, I would not be supprised if the subframe would bolt right up to the Le Sabre

After riding in a few of the DeVilles with the 4.9, I have to say that I was supprised that a FWD would plant you in the seat like it would... Maybe not neck snapping torque but it was enough to make you take a breath, then the speedo jumped, not moved smoothly, jumped trying to catch up to the real speed...lol

A 4.9 in a LeSabre does sound like fun...

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Old 07-05-2006, 09:46 PM   #15
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If a Caddy V8 Deville can get 16/26 MPG, which is 3/2 MPG worse than a 3800. I would expect that, putting the V8 in would weigh the same, or less. It would make that V8 get almost 29-30 MPG highway. (maybe/maybe not).

Now, my debates are whether i should go ahead or not.. It would be fun, but would it be fun to work on. Is it cheaper? etc? Those are questions i'd ask myself. If i go to the yard, and search for both, and lets say i found 2 rear ended cars. A Bonny, and Caddy. The bonny is a 96+ newer, and the Caddy is a 91 (rounds there). To do a L67 (i think) of a SC3800 that makes 240 HP and 230 TQ swap, its going to be alot of work. A 96 is OBD2, more stuff, more complex.
A 91 Caddy 4.9 might be less complex, since its OBD1, and it might be cheaper.
I have no idea. I'd just weigh the options of whats more practical, and cheaper.

I love the 3800, its one of my favorite engines, its bulletproof, and torquey. But A V8 under my hood sounds cool, both in wording, and sound!

Let me dream, its fun!
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Old 07-05-2006, 10:10 PM   #16
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Quote:
To do a L67 (i think) of a SC3800 that makes 240 HP and 230 TQ swap, its going to be alot of work. A 96 is OBD2, more stuff, more complex.
It would actually be 240HP & 280TQ but whos counting.
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