LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Is this true

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Old Feb 6, 2009 | 06:40 PM
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Default Is this true

I know that 93 cars had alot of differences then any newer ones, such as the t-56 manual trans options. My car has the more desirable m29 option, with shorter gears. I have been told this made this particular f-body the fastest of all stock f-bodys. Obviously it wouldn't be as fast as the special editions, but over the standered z28/zz or formula/trans am. Can anyone that knows for sure chime in.
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Old Feb 6, 2009 | 07:18 PM
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There are quite a few differences. Many of which change the way you mod the car.
Lots of good info over at speeddensity.org
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Old Feb 6, 2009 | 07:48 PM
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93's for the win
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Old Feb 6, 2009 | 09:21 PM
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mine's faster than a 93
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Old Feb 6, 2009 | 09:23 PM
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Originally Posted by 1badzee
93's for the win
x2 equipped with those 4L60's
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Old Feb 6, 2009 | 09:24 PM
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Originally Posted by $O$OE
x2 equipped with those 4L60's
Lost me what?
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Old Feb 6, 2009 | 09:41 PM
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Yes, there are a lot of 1993 differences, but basically, 93-97s are pretty evenly matched.
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Old Feb 6, 2009 | 09:48 PM
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Originally Posted by Kmaroman
Lost me what?
there really is no difference but the 4l60 (AKA 700R4) is not electronically shifted like the 4l60E...i just like it better
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Old Feb 6, 2009 | 09:50 PM
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I'm asking about the trans option I know alot of the differences? speed density etc etc etc
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Old Feb 6, 2009 | 10:06 PM
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Of course they are faster, duh!

JK, lol. It is too close to tell if any year is faster...LT1s are not the most precision made engines, and GMHTP noted that through there testing over the years they found that even among the same years different stock engines can dyno up to a 30hp difference.

That is a HUGE range.
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Old Feb 7, 2009 | 10:03 AM
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A 4L60 (no E) is a 700R4. GM just changed the designation for 1993. The '93 F-Body unit has different valve body, spacer plate, and lock-up wiring than any previous 700R4, though. The reverse input housing is also specific to 1993.

The 93 is speed density (used air temp and pressure to make A/F calculations) It does not have a MAF.

The 93 uses non-heated oxygen sensors. 94+ use heated models to reach closed loop faster.

93s had dot-matrix pattern tint on the ttops

93s and 94s use a non-vented opti, which can lead to O3 buildup and premature failure.
The opti is driven by a spline instead of a pin, the cam has to be set up accordingly.

93-95 had cams ground to 202/207 on 116LSA
96-97 had 200/207 on 117LSA

.... plenty of other differences, but like Shbox said ... nothing massive.

Last edited by James Montigny; Feb 7, 2009 at 10:12 AM.
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Old Feb 7, 2009 | 10:29 AM
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Originally Posted by 1badzee
93's for the win
Umm probably not
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Old Feb 7, 2009 | 12:06 PM
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Originally Posted by ROWDYZ28
Umm probably not
Nah, I x2 that
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Old Feb 7, 2009 | 12:10 PM
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Originally Posted by ROWDYZ28
Umm probably not

You opinion is no good here
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Old Feb 7, 2009 | 05:58 PM
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I've posted info in these threads too many times that I'm just not going to bother anymore lol No, the 93 isn't the fasted F-Body It is snappy, but not the fastest by a long shot. However, I do know you implied the fastest LT1 F-Body, and it's possible but it's all down to a drivers race. I think the 2 things that help the 93s out over the rest is the intake manifold having no fuel rail hump inside and the batch fire. Batch isn't really a good way to do injection when you want something that'll utilize the fuel efficiently, but it'll give you a bit more power I think. And I literally mean a bit heh I only feel that due to the added gas having some time to evaporate while it's waiting for the valve to open again, when another shot of fuel is sprayed in. Helps to richen it up a bit more when you're up in the RPMs
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Old Feb 7, 2009 | 06:08 PM
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Originally Posted by Formula350
I've posted info in these threads too many times that I'm just not going to bother anymore lol No, the 93 isn't the fasted F-Body It is snappy, but not the fastest by a long shot. However, I do know you implied the fastest LT1 F-Body, and it's possible but it's all down to a drivers race. I think the 2 things that help the 93s out over the rest is the intake manifold having no fuel rail hump inside and the batch fire. Batch isn't really a good way to do injection when you want something that'll utilize the fuel efficiently, but it'll give you a bit more power I think. And I literally mean a bit heh I only feel that due to the added gas having some time to evaporate while it's waiting for the valve to open again, when another shot of fuel is sprayed in. Helps to richen it up a bit more when you're up in the RPMs

Thank you ! finally someone who didn't beat around the bush
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Old Feb 8, 2009 | 08:58 PM
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How many want to see a SBC beat his 93 lol
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Old Feb 8, 2009 | 09:41 PM
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Originally Posted by 88iroc92rs94formula
How many want to see a SBC beat his 93 lol
Watch out, us 93's stick together
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Old Feb 8, 2009 | 09:57 PM
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i think its more the driver but i like my 93 for the way the ratio's are close in each gear
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Old Feb 8, 2009 | 10:36 PM
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Originally Posted by 88iroc92rs94formula
How many want to see a SBC beat his 93 lol
So if he tosses a 4bbl intake and a carb on it w/ HEI, does he become a SBC? I only ask, because then it wouldn't be any big deal if you beat him

Us 93s do stick together And if there is ANY 92 Vette owners here, I think you'd be just as welcome ^_^ Yet I've not hard of anyone here owning one, which I find a bit odd!
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