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8.1 Big Block in a 98-02 F-Body

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Old 05-21-2009, 09:23 PM
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Default 8.1 Big Block in a 98-02 F-Body

Has any body put a 8.1 in a f-body?
I know they are heavy as **** but, I have found one and im wondering if it would be worth the time and money to do this.
Old 05-21-2009, 11:11 PM
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question i would ask is.....are there any parts for it or are you stuck with the factory HP rating?
Old 05-21-2009, 11:26 PM
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i personally do not think it is worth the time if it is a street car. that motor will kill the handling on your car. also knowing what your hp goals will help.

you can easily get 500whp out of an ls2 408 (even out of a h/c 346 ls1)without any power adders and still have room to grow.
Old 05-22-2009, 09:39 AM
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Originally Posted by elias_799
i personally do not think it is worth the time if it is a street car. that motor will kill the handling on your car. also knowing what your hp goals will help.

you can easily get 500whp out of an ls2 408 (even out of a h/c 346 ls1)without any power adders and still have room to grow.
yes it can be done, but not easy on a 346. definitely a lot easier on the 408.

but to the OP, I'd follow this guys advise, go with the small block, you will lose much more than you gain by going with the 8.1.
Old 05-22-2009, 01:20 PM
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it was just a thought. i havent hurd of any one doing this, and i havent looked real hard for cams, heads and other performance parts. and it would be a strip only car if it got done. but it is a heavy *** motor.
Old 05-22-2009, 02:21 PM
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I say do it just cuz I want to see it, if you do it start a build thread for it.
Old 05-22-2009, 06:52 PM
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Another reason i want to see one is because, back in the late 60's early 70's when they put big blocks in GM muscle cars, they were bad ***.
So why wouldent one be bad *** now (with the right suspension, and mods).
Old 05-22-2009, 06:58 PM
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Originally Posted by jrob56
I say do it just cuz I want to see it, if you do it start a build thread for it.
This is wise man.

+346
Old 05-22-2009, 10:41 PM
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as far as i know, there is no perf parts for it. there was a guy on s10forum.com that was starting to put one in his s10, but decided against due to no performance parts avail.
Old 05-22-2009, 10:47 PM
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well, all I can say is I know the 8.1L engine will fit in a 4th Gen F-body. Ask me how I know! lol.

I think it would be different, and reminiscent of the late 60's big-block Camaro's, with today's technology. DO IT!!

Cody
Old 05-22-2009, 11:15 PM
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Originally Posted by Rafedial
well, all I can say is I know the 8.1L engine will fit in a 4th Gen F-body. Ask me how I know! lol.

I think it would be different, and reminiscent of the late 60's big-block Camaro's, with today's technology. DO IT!!

Cody
I think it would be cool To have a Fuel Injected Big Block In a 2000 Trans Am!
Old 05-24-2009, 07:18 PM
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Im goin to stay LSX small block. Because i want to keep the T-56 and keep the weight down on the car.
Old 05-24-2009, 11:00 PM
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I have a friend that stuffed an 8.1 4L80e in a 69 camaro. Looks nice ,runs nice mostly a show car though.
Old 05-24-2009, 11:57 PM
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How many cubes is an 8.1 GM? 502?
Old 05-25-2009, 12:10 AM
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496 i think
Old 05-25-2009, 01:49 PM
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Its a 496.
Old 05-25-2009, 02:03 PM
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I think its 502
Old 05-25-2009, 02:04 PM
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yup 496 cu in there in a lot of class a motor homes and are recomended to run 90+ octane , vortec workhorse chassic .
Old 05-25-2009, 03:02 PM
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^^^ X2 I'll co-sign on the 8.1 being a 496.
Old 05-26-2009, 04:40 PM
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I dont think I would even attempt it, but, it would be different to say the least.


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