I'm planing to make a streat bruiser (fat tire's out back skinny in the front) out of my 89 rs. what I got is a 350/.30 over bore 9to1pistons/ stock crank.
I'm interested in e85. what I need to know is what I need to do? I havent chose a cam intake heads carb or fuel injection not sure. I live in michigan so carb laws are not a issue. I would be happy with 300 hp. I have a built th350 and a 2500 stal convter. Any suggestions would be greatly helpfull.

 

Welcome Aboard!

You'll want an engine with plenty of dynamic compression and plenty of heat. Forget about the old-school ideas of running a cold thermostat for power (which is a flawed idea even for gasoline). Static compression of 12:1 is not completely unreasonable. A sharp valve cutoff to trap that compression will help.

A carburetor could be used, but the intake is going to have to be kept fairly warm to be effective. Also, a higher intake air/fuel flow rate is going to be necessary. Further, whatever carburetor you might choose should be alcohol compatible (i.e., no brass, bronze, or incompatible plastics), and a plastic body carb (such as a ThermoQuad) might not work as well as an all-metal carb.

Injection at the port would be better, but size the injectors up about 10-15% higher than an equivalent gasoline engine and tune the injection based upon exhaust oxygen. Contrary to what you might have read or heard elsewhere, a standard oxygen sensor will work jusrt fine with an ethanol system. The difference is in the fuel mapping, which can be tuned in easily. Run a standard fuel rail pressure and standard fuel filter. Avoid the early- to mid-90s Multec injectors at any cost with alcohol.

Plan on retaining a working PCV system to keep the additional moisture out of the oil sump.

Plan on heads with good port velocity over large, slow flowing big ports.

A cold air induction system is unnecessary, since you want some heat in the intake tract.

Plan on more ignition timing advance, and a richer clod starting system.

 

Here is some good info.

http://e85forum.com/topic-1-0-50.html

http://www.e85performance.net/forums/index.php

https://www.thirdgen.org/forums/carb...5-jetting.html

also check with five7kid on this site.

welcome aboard.

 

thanx Good stuf
----------
thanks man, if I up the compresion will my stock crank handle it?
I'm building it to beat at the local track ofcourse. :}

 

As you can see if you made it all of the way through that thirdgen.org linked thread, after messing with this for 2 years my conclusion if you're going carbed: Don't bother with any conversions and just plunk down the $736.95 for the QTF 750 CFM DP E85 carb and be done with it - finish, end of story, happy ending. I'm ashamed to admit I spent more than that converting my 4777 Holley, and have a lesser carb in the end.

I got an RPM Air Gap intake before I converted to E85. Vader is right, I wish I had a non-AG intake.

A properly prepped stock crank will be fine with 12:1 CR and 300 HP.

 

I have a steth alum intake. but I thinking about using vortech heads. and that intake wont work. Its still in the works for now.I want to do engine last. Gonna do the body work and suspention first. any fuel system mods that I need to be aware of?
----------
Sorry stealth wiand