# e85 and carb **URL:** https://forums.speedlife.net/t/e85-and-carb/193333 **Category:** PittSpeed Automotive **Created:** [October 28, 2007, 1:47pm UTC](https://forums.speedlife.net/t/e85-and-carb/193333 "2007-10-28T13:47:30Z") **Posts on this page:** 1 **Showing post:** 7
### Author: ![bald1one](https://avatars.discourse-cdn.com/v4/letter/b/9de053/32.png) [@bald1one](https://forums.speedlife.net/u/bald1one) #### Post date: [October 28, 2007, 5:44pm UTC](https://forums.speedlife.net/t/e85-and-carb/193333/7 "2007-10-28T17:44:33Z")
> [@checking pushrods in LS1](https://forums.speedlife.net/t/checking-pushrods-in-ls1/33222/7): > > thats were i was kinda going with this… if race fuel is 5 to 6 dollars and e85 is 275 would it be economical to try a few gallons of 85 just to see what happens or just buy some race fuel. question 2 how much difference does race fuel make over regular 87 octane. I would not run e85 with your setup for 87, if you get the ethanol kit made for carbs, have someone install it that knows what they are doing and that has tuned for e85 before. Race fuel or ethanol will not perform to its full potential if your setup is not tuned for it. If tuned properly there is much to gain. (HP, throttle response ect.) Only issue I see as of now is very few gas stations currently carry E85, which can be solved if you buy a 55 gallon drum and fill that every visit. As for changes of your setup I would get the ethanol kit and make sure your fuel pump and fuel lines are efficient to supply enough fuel to the carb. --- _[View the full topic](https://forums.speedlife.net/t/e85-and-carb/193333)._