any mods on 87-91 460 efi

[a ayala]

any good performance mods out there without converting to mass air flow???? if so what where the results in horsepower and torq?????

[House Husband]

Start with the exhaust. Your engine will respond to exhaust mods better than any thing else.
I have the Banks Power Pack on my 1995 motorhome. Banks chassis dyno shows a gain of over 60 HP and almost 100 lbs. of torque at the rear wheels. Made the ol beast a real pleasure to drive.
One little trick, is to adjust the EGR feed back potentiometer. Remove the pot and make a cupped shim to fit over the stem. The stem is .156" in diameter. A 5/32 drill bit will give you the right size for your shim. Adjust the shim until you have .85 volts on the output lead, with the engine running and the vacuum line disconnected. This will add a little more timing when the EGR valve opens. Ford seemed to be very conservative with the timing in this area. I've done this mod for years on SBF & BBF with good results.

Richard

[4wheeling79]

You can do under drive pulley's they are a for sure thing. I have dyno results before and after they where worth 20hp and 54tq. Bump the timing, cut the air horns out, and lose the factory exhaust. Do not add a bigger TB and a bunch of air to it the factory SD can't handle it.

[a ayala]

where can i find underdrive pullys

[4wheeling79]

troyer performance