JC316

This is probably a silly question, but it's been eating at me. The engine spec tag that's on the cup holder lid has the compression ratio wrong. It says:

LT1
350 Cubic Inches
300 Horsepower
330 Torque
9:1 compression ratio.

Obviously the LT1 has a 10.5:1 compression ratio, so what gives? Guessing it has something to do with it being the first year, but I haven't found another one with the wrong info.

WVZR-1

The information plate that you refer to isn't a GM production but rather an after-market production piece. Obviously I'd guess a PO wasn't a very observant shopper! Has absolutely nothing to do with "first year".

JC316

Gotcha, that would explain it. Judging by the amount of fade and wear on it, it's probably as old as the car, thus the incorrect info.

1stVetteFinally

My 92 LT1 has this same cover plate, and I've been wondering about that samething. So that plate is not stock?

RollaMo-LT4

Nope, not stock.
No C4 came with them.

Nowhere Man

yep all the after market places have been selling that plate for years

JC316

I suspect that it's such a common mod that most people think it's stock. Every one I looked at had it.

RollaMo-LT4

Yep, very common.

This is probably because the C3 actually had one from the factory.
When GM did away with it on the C4, the aftermarket provided one and just about everyone had to have one.

BadUmp

If you want the correct one here is a link to MA, just be sure to check the correct year - http://www.mamotorworks.com/Corvette...plate&Y=&G=&C=

I guess I got lucky since whomever put mine there got it correct:

QCVette

I see them on lots of cars too.

How do you get them off without damage to the factory console finish???

WVZR-1

Heat should be your friend here. A really good hair "blow dryer" will generally accomplish it BUT there's certainly no assurance that the finish if it's on a '90+ C4 won't be damaged.

The earlier cars it might not be as difficult to accomplish and maybe the '90+ cars with the dark gray finish could do OK but the "DULSO" finish there's no possible way.

QCVette

That is what I was thinking too. Putting those ID plates on the Dulso makes permanent damage.

Impala Balko

I thought the LT1 was "sequential port fuel injection" not "Tuned Port Injection"

PLRX

You are correct, the LT1 is a SFI system.

BadUmp

if my reference is accurate, the '93 was a Tuned Port Injection where as the later '94-96 were Sequential Port Injection ... , please correct me if that is not so.

JC316

You're thinking of batch fire vs sequential. The tune port referred to the old L98 style of intake runner IIRC.

BadUmp

Thanks - no argument from me on any of these issues. I do not pretend to be a motor man by any stretch of the imagination. That's why I read, and how I get my self in hot water.....

The original spec sheet for my '93 shows the engine as -
350HO 5.7 MPEI - - - which would make it what???

Also, the original (?) engine spec plate is red with - well see for yourself....




Is this the original plate, I'm seeing others that don't match what is on mine... ?

JC316

I think it's Multi Port Electronic Injection. Which would be Sequential.

BadUmp

I guy could finish pulling out what's left of his hair trying to figure out all the semantics in automotive language....

the engine spec plates that I've been viewing are here -
http://www.corvetteguys.com/corvette-engine-id.html

and thanks for the help!

toptechx6

LT1's did not become sequential until 1994, 92 and 93 are batch fire.