Tiburwolf

Hello,

Recently my 93 developed a miss. I had it in a shop to get a diagnosis since I understand there are a few things common on the LT1's that pose a problem. I was told the injectors need to be replaced. 2 of the injectors were way off the mark for resistance. One was 16.5ish and the other was 10.5ish. The other 6 were right where they should be.

After some research, I have seen that 93's came with 22lb injectors. From the write up I found on the forum, the Bosch III 24lb injectors seem to be the safe bet. Is this a problem being stock? Putting 24lb injectors in place of the 22's? Would any other modifications need to be made?

Thanks,
Jeff

1993C4LT1

I thought 93's came with 24lb stock? Anyways, I have Bosch 3's in mine. No complaints.

Tiburwolf

Yes, this is the issue I had trying to figure out what is what. I've seen people mention both for '93. Since the injection was changed for '94, I thought when someone said 22lb it made sense.

I think I'm square now.

thanks.

John A. Marker

Here is some information that I pulled from the Forum a few years back that will answer your question.....

FUEL INJECTORS: Stock Numbers –
From receiving cores back form customers I have sufficient evidence on what is in what. Here it goes.

l98 85 used a Bosch 24lb injector with a 36psi rail pressure net 22lbs.
l98 86-88 used a bosch injector 22 lb at rail pressure of 43.5 net 22lbs
l98 89-91 used a Rochester Multec 1 22lb at rail pressure of 43.5 net 22lbs
92-93 LT1 used a 22lb Multec 1 22lb at 43.5 psi
94-95-96 LT1 went to sequential injection and a 24lb Multec II at 43.5 psi
96 LT4 uses a 26lb multec 2 at 43.5 psi.
97-up LS1 uses a bosch design 3 24lb injector flowing at 55psi net 28lbs. These are also 12.8 ohm coils vs 15 on the SVO.
-FICINJECTORS


Use the 22 lb injectors for your 93. I am sure that Jon at FIC would recommend staying with the correct injector.

1993C4LT1

I bought these. They recommended me these. Could have sworn I read these are 24lb

http://fuelinjectorconnection.com/sh...product_id=259

Just emailed Jon, said these are correct.

Silver96ce

Call FIC - 770-888-1662.

01 Coupe

Jon at Fuel Injection Connection is the man to contact. He is very knowledgeable and friendly. I bought a set two years ago for my '95 and they have been working perfect ever since.

Tiburwolf

Thanks everyone. Will be calling him this Friday for my order...

I have to say, it is nice to have such wonderful support and an awesome car...

Thanks,
Jeff