powerslide

Hi,i'm currently building a fox mustang with a 460 from a 1975 t-bird that as low miles.The plan is to use E85(green and high octane)but the stock compression is very low and doesnt take full advantage of the higher octane.I have a couple of options but would like your opinion on what is best.First option is to find a set of DOVE heads if i can and slapping them on(dont know exacly how much compression this will give) and second is removing the pistons and putting some keith black hyper domed pistons in the stock holes wich would give me over 11 to 1.The rest of the build would consiste of 850 e85 demon carb-weiand stealth intake-hooker full headers-light porting and stock valves if i keep the d3ve heads-275 dual energy cam with bigger springs and stock valvetrain.I'm looking at making power below 6000rpm and i think this combo should do it,keep in mind this is a cheap build and i dont want to dismantel the motor more then i have to.Also do you think that the stock components will live at this RPM range,this motor will only see the ocasional drag race with street drag radials and is mostly a street car.
Any estimate how much hp and torke a como like this will make?
Thank you for your help in advance.

Paul Kane

D0VE heads bolted to a bone stock 1975 460 shortblock will get you to about 9.1:1 compression ratio.

Porting either set of heads (D3VE or D0VE) is very highly advisable for this application since you want rpms and also because of the alcohol.

The 275DEH cam is a good cam for the parts combo, however you are asking a lot of the OEM 2-piece valves with the increased CompCams spring pressures AND rpms. By the way, that is about as much cam as you can safely use with the D3VE head's OEM stamped steel rocker arm valve train or the D0VE's cast iron rocker arm valve train.

Paul

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powerslide

Thank you for the reply,i think i will pull the heads off give them a quick porting job and get some bigger and stronger valves installed and maybe get the pedestal machined for screw in studs if the budget permits then i will put the domed pistons and ARP bolts in the bottom end since i will have everything opened up to get more compression from these heads.Is there anything else i am missing or should consider for the E85 and at this RPM level?
P.S:Thank you Paul for your great advice,its fun to have the help of somebody that actually knows what he is talking about,usually the only advice you get when asking about a BBF is "why dont you build a 302 it's just as fast"these people have never sat behind the wheel of a big block before and felt the massive torque that never quits.