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Old 06-08-2008, 07:00 PM   #26
Ackattack
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Re: Which Gen III motor?

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Originally Posted by jkade View Post
Not trying to be a smart a$$ but some of the later cars did have the ls6 block and I only said block and some had the block and the intake but the heads and so on where different.

Yes, some of the 01 and 02s (F-body's) had LS6 blocks.
All 01+ had LS6 intakes, and LS6 clutches (manuals)

But, these changes had nothing to do with SS vs Z28 or WS6 vs non-WS6. One thing, in 02 there was an option (I think for the SS and Firehawks....from SLP) for more power; essentially they put a airlid on them from the factory. I believe these were rated at 345HP.

My lowly 01 Formula (factory rated at 310) put down 321 at the wheels.
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Old 06-08-2008, 10:35 PM   #27
RaceAGMC
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Re: Which Gen III motor?

It seems that GM under rates their power numbers. I always see people putting down 300+ on stock LS1 F body's.
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Old 06-08-2008, 10:52 PM   #28
67_C-30
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Re: Which Gen III motor?

Not to hijack or change the direction of the thread, but what kind of mileage is acheiveable with a pretty much stock 4.8L and 4L60E in these trucks? Has anyone done this?
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Old 06-08-2008, 10:58 PM   #29
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Re: Which Gen III motor?

Depending on your rear end gear, i would guess on the highway you should see 20+ MPG.
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