I'm planning on switching the 2001 ls1 thats in my 1991 camaro over to E85. I know you have to install larger injectors but I was wondering if anyone knows what size comes in them stock and if anyone has done this what size injectors did you install. The engine is out of an 2001 Z28 with a 4L60E. Thanks

 

28lbs are stock. The size you will need really depends on what you are planning on doing. If you are going to stay stock you might be able to get away with the stock ones. If you do a cam then I would look at 36lbers and up from there depending on supporting mods.

 

It's a 2-step process.

First, determine your injector size with gasoline for the power you're going to make:
http://www.watkinsmotorsports.com/Fu..._required.aspx

Then, convert to E85:
http://injector-rehab.com/shop/e85_injector_size.html

If 28's are good for your power on gasoline, you'll need 42's for E85.

Are you planning on increasing compression?

 

Thanks for the info. I guess I should of mentioned more about the engine, haha. It has a Texas speed 220r cam on 110 lsa in it. Engine is all stock other then that but I do plan on changing the heads and giving it a little more compresion and maybe going with a little larger camshaft. The only other things I'm planning on doing are a 3200 converter and probably a larger throttle body. It already has an ls6 intake so I don't plan on changing it unless I have to. Car has a 4:10 gear also. That may change once I get going. It seems the faster I get the car to go the more I want it to go just a little bit faster, haha. Thanks again

 

{I took the liberty to add the E85 part to the thread title}

I ran E85 in my carbureted 396 for 5 years. The 1.47 factor is the key. I used it to calculate flow areas of the different carb jet numbers to determine how to jet up from gasoline to E85.

Remember that "E85" is not a guarantee. During the winter, it can drop as low as E70. Stations are not required to reveal their actual ratio on the pump. Flex fuel vehicles don't have a problem with that as they have sensors that determine the ratio the engine is being fed. You won't have that luxury with a 2001 PCM. The O2 sensor reacts differently to ethanol than it does gasoline (for some reason - not sure I understand those physics yet), so you can't just rely on it to compensate should you get a tankful of E70.

After a couple of years, I started buying E85 at the track because it was always 85%, while I never really knew what I was getting from the pump. Some guys carry a test kit with them and adjust their tune accordingly, but I never got that sophisticated, nor would I think I'd want to hassle with a retune every time I filled up.

I considered keeping the car E85 when the LQ4/L92 goes in it, but I'm probably going to stick with gasoline this time.