MartyE12345

I have a 5.0 with a couple of bolt on modifications but i wonder if u can make a mustang engine rev higher because they rev kinda low

619socalstang

for a V-8 there pretty good but with some new forgedpistons, Manely alu.rodswith a cmplete rebuild and some internal balanceing you could get around 9000 rpm also need profromane ignition and valve train.

Ormist

What is a basickly stock 89 GT supposed to idle at (rpm) I have Flowmasters Exaust, E chip, Offroad H pipes and K&amp;N Air filter and no Cadalidic Converter* (If it makes a difference)..</P>

five0

650?

Ormist

I idle about 750-800...

makarovboy

To get back to your original question, ormist, you can de-stroke it. Turns a much higher rpm, 10,000rpm range. Short stroke equals insanely fast piston speed in the bore.

A better option (and cheaper), is h/c/i, with the cam and the intake being the major players. But beware, if you select a cam in the 3500 to 7000rpm range, you ain't gonna like it on the street, and with an intake such as the edelbrock rpm or rpmII with that cam, it's not a streetlight to streetlight racer, as you're not even going to come on the pipe until 3500rpm.

Strokers are the way to go, lots of torque down low with moderate h/c/i, killer street ride plus bad track times.

Quik

i seen one in an article rev to around 9g it was a 306. that had a nice cam,youll need heads that can flow extremely well, strong springs, lightweight pistons and arms. flowing intake. a strongbottom end

mkspeed26

torev higher you need power up there. so you need to get h/i/c that flowat high rpms. if you stroke the engine the piston has to move farther, so your rpms will drop. if you destroke it the piston moves less so it can get more rpms. and if you plan on running high rpms you need a better ignition system.

tchamber

Ahh, cmon, just get stiffer valve springs

mkspeed26

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are the stock ones really that weak??</P>