[ponjohn]

this is a great combo for E85

[p4msi1]

Bill C. it made 575 ultimately on a chassis dyno. I ran the A/F ratio from 11:1 - 13:5 and it liked 12:9 the best. I ran the cam from straight up to 8 degree advanced. I liked 8 degree advanced best. That is also where the cranking compression finally went to 160 psi.The current intake manifold is a sheetmetal one that I made with a 1050 dominator carb. I know there is a compromise on the low profile intake but I also know it isn't a 150 hp compromise. In its current state I ran the timing up to 42 before the power started to taper off. I backed it off to 39 to be safe. This is why I feel it could use alot more compression. I have ordered 2 new 800 cfm carbs and will situate them over the port runners and hopefully make that area more efficient. The GOOD news is it lost oil pressure while driving down the street and now has a rod knock, so, now I get to buy new flat top pistons to fix the low compression.
Bill C were you running flat top pistons on that engine?

[p4msi1]

Ponjon not many E85 stations around here

[cfmcnc]

Dished pistons.You should not need 39 degrees timing,Bill C.

[p4msi1]

Bill, I know I should not need 39 degrees but that's where it ended up. I think that the compression is too low with the 30 cc dish pistons and 72 cc heads. Maybe I should just put a blower on it.

[pastry_chef]

What RPM was peak power?

Any more specifics on your intake?
runner CSA @ head, CSA @ plenum, runner length, plenum volume?

how much lift at the valve?

[p4msi1]

Pastry, the intake was designed to fit under the hood. I matched the head port openings and kept the runners the same dimension all the way. I was recommended to do this by another porter. I do not know the plenum volumn but the runners are 2 7/8 x 1 3/8 to match the port opening. I really DO NOT want to cut the super 400 hood that is on it for a taller intake unless it can be proven to vastly outperform this one.The valve lift is .800. Hopefully I can post the dyno sheet and pics of the intake.