LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Looking at getting a 93'

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Old 10-02-2003, 12:30 PM
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Looking at getting a 93'

Hey guys,

Can anyone tell me how these cars handle and drive? What should I expect? Was 93' a good year or were there any problems?

How much horsepower does it have stock? 0-60? 1/4 mile?


Im basically looking for all and any info I can find before I purchase.


Thanks!
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Old 10-02-2003, 01:31 PM
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0-60 is about 5.7 if I remember correctly and 1/4 could be anywhere from 13.9 to 14.5, provided the car runs like it should.
93 was the introductory year for the 4th generation f-bodies and there are many things on it that are different from the other years, but I would say that if you get a great deal on it, buy it.

I couldn't tell you much about handling, but I don't think it's bad at all. The brakes could be better, but that's easy to fix.

Also try doing a search. You'll find lots of useful info, and there's also a 93 specific list somewhere.
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Old 10-02-2003, 01:36 PM
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Re: Looking at getting a 93'

Originally posted by Dabum
Hey guys,

Can anyone tell me how these cars handle and drive? What should I expect? Was 93' a good year or were there any problems?

How much horsepower does it have stock? 0-60? 1/4 mile?


Im basically looking for all and any info I can find before I purchase.


Thanks!
93's have some uniqueness about them, ie: they lack a mass air flow sensor. 93 LT1's operate in speed density mode, based off of a MAP (manifold absolute pressure) sensor. I believe in 93 they were advertised with 265hp at the flywheel, 0-60 times around 5.8. Ian is correct, they run between 13.8 and 14.4 if they're running properly. As for other differences, the PCM was a bit different too, if I recall. AFAIK, they're the only year you could short your OBDI connector with a paper clip and have the SES light flash the code to you, too.

Every Z I've driven handled beautifully, although I've heard they tend to understeer around hard corners in, say, a closed road course or something.. The first suspension mod I see recommended is subframe connectors. This really helps stop chassis flex, and I hear it's good for launching at the track, too.

If you get a good deal on the car, another $2000 or so in mods might get you into the 12's on the 1/4 mile. $3000 would probably get you low 12's with some high traps. LT1's respond very well to camming, headers, intake, and catbacks. Just lose the idea of forced induction. LT1's are very high compression engines and forced induction will ruin them if they're not rebuilt and forged first. Hope this is a good start for you.

Last edited by X-Jester; 10-02-2003 at 01:44 PM.
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Old 10-02-2003, 01:44 PM
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Re: Re: Looking at getting a 93'

Originally posted by X-Jester
93's have some uniqueness about them, ie: they lack a mass air flow sensor. 93 LT1's operate in speed density mode, based off of a MAP (manifold absolute pressure) sensor. I believe in 93 they were advertised with 265hp at the flywheel, 0-60 times around 5.8. The PCM was a bit different too, if I recall. AFAIK, they're the only year you could short your OBDI connector with a paper clip and have the SES light flash the code to you, too. If you get a good deal on the car, another $2000 or so in mods might get you into the 12's on the 1/4 mile. $3000 would probably get you low 12's with some high traps. LT1's respond very well to camming, headers, intake, and catbacks. Just lose the idea of forced induction. LT1's are very high compression engines and forced induction will ruin them if they're not rebuilt and forged first. Hope this is a good start for you.
I've seen the 265 HP rating in the Chilton manual, but every other source quotes 275. I really don't see why it would have 10 HP less than a 94 since it has the same heads, the same displacement and the cam, if I'm not mistaken might actually be a little better.
Yes, the ECM (engine control module) is different. 94+ cars got a PCM (powertrain control module) which controlled both the transmission and the engine, while on 93s, the ECM only controls the engine. (also torque converter lockup and release on automatics which were 700R4s aka 4L60, while the 94+ ones were fully electronic 4L60Es). And yes, you can use the paperclip trick to find out the codes.

PS. I actually own one, but it has a 94 engine.
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Old 10-02-2003, 01:48 PM
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Re: Re: Re: Looking at getting a 93'

Originally posted by madwolf
I've seen the 265 HP rating in the Chilton manual, but every other source quotes 275. I really don't see why it would have 10 HP less than a 94 since it has the same heads, the same displacement and the cam, if I'm not mistaken might actually be a little better.
Yes, the ECM (engine control module) is different. 94+ cars got a PCM (powertrain control module) which controlled both the transmission and the engine, while on 93s, the ECM only controls the engine. (also torque converter lockup and release on automatics which were 700R4s aka 4L60, while the 94+ ones were fully electronic 4L60Es). And yes, you can use the paperclip trick to find out the codes.

PS. I actually own one, but it has a 94 engine.
Would the fact that 94's got MAF'S account for 10fwhp?
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Old 10-02-2003, 01:51 PM
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No.... some people actually think they're faster because they don't have a restriction in the intake. (MAF)
Also, they have 22# injectors unlike the 94-97s which got 24#s, but they flow plenty for 275 HP.
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Old 10-02-2003, 03:00 PM
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The biggest thing to look for is maintance. The Camaro with 100k and never a lick of maintance could get exspensive if you don't turn wrenches. Main items: water pump, fuel pump, shocks, opti (wires and plugs) & intake, frt seals oil leaks. These thinghs are no worst or better than most 10 year old cars with 300hp (few mods) Take your time and find a good one. Last hint; there cheap in the winter
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Old 10-02-2003, 04:23 PM
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I've got one. $9k and she's yours.
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Old 10-02-2003, 05:34 PM
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I love my 93, wouldn't have it any other way. It's a bit of bastard year since several mods must be different to work on a 1993. Meaning, you'll see a part ofr 1993 and a similer part for 94+.

I have always seen the 1993s rated at 275hp, never seen 265. In my experence, they run faster than other stock LT1s.

I got mine with 83K miles and grat shape for $5000 about 2 years ago. If you do a search, you'll find a big thread with all the differences between the 1993s and up, very good info in it.
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Old 10-02-2003, 05:57 PM
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Read my sig, if you would like to test drive, give me a e-mail.
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Old 10-02-2003, 06:46 PM
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My '93 went 13.47 with a completely stock, motor (with exhaust manifolds), transmission, torque converter, 3.23's, and suspension. Not much more than a CAI, Flowmaster "cat-Back", and Drag Radials.

As another side note...'93 was the last year for replaceable computer chips, and the 700 transmission.

Frank
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