BuickStangdude

Hi folks-

I have a 91 Foxbody LX Coupe- it's nice.

It's a 306, Supercharged Fox Vortech Strim

I had a question. What can I change on the bottom end (motor) to achieve a 500 Horsepower to the rear wheel setup.

I would like to remove the whole engine, and go Natural Aspirated. Can this be done with a 347?

If you can chime in. I would like to ditch the Supercharger for now. I have a Holley Systemax intake sitting in my garage, with a brand new set of Trick Flow Twisted Wedge Heads. I'd like to have a bottom end built and put it all together-

Thanks in advance,
Mike in Central Florida

Tiffiny

It would be better and easier and about the same price to build a stroker 351 set up . it will be real hard to make 500 hp na to the wheels
with a 347....

BuickStangdude

Thanks for your thought

I guess I'm going to need a different block I assume then? And then have it stroked out or not?

appreciate any more thoughts, and thank you for the 351 advice. I was kind of thinking that way myself

Also, can I still use the twisted wedge heads on the 351? i'd like to stay fuel injected- so Im assuming my green 42lb injectors will also need changing out?

I have a Treme 3550 trans too

st pete chad

i agree and i also have a nice 351w roller for sale

slowmoving1

it can be done if your you have the funds, not cheap by any means.

302 based dart,ford racing block ,363-372 ci should get you there
high compression,high rpm
most NA 347 make about 350-400 rwhp some a little higher

st pete chad

yea but like john said for just about the same price you can go bigger 393 or 408.hell you wont spend as much money on a 351w roller block like you will a sportman or dart block

st pete chad

by my 351w roller block put your heads on it put a good came in it and a nice intake and you will be on your way

st pete chad

yes you can use the twisted wedge heads on the 351.however if you stroke it to a 393 or a 408 the stock out the box trick flow heads will be small but can still be used.as for the 42lb if you stroke it the 42 should be ok.im building a 351w turbo now with trick flow heads but mine have been ported.i would get a 351w roller block mine throw your heads on it sell the holley intake buy something for a 351w put a nice cam in it and you should be on your way.as for the tremec 3550 you should be fine.i know a guy with a 351w roller trick flow heads stage 2 ported from fox lake victor intake custom cam with all the bolt on and hes making 480@ wheels

slow306stang

we made a estimated 463hp with

a 750hp holley, victor jr intake, cast trickflow twisted wedge heads, cp flat top pistons, eagle rods, and crank, with a custom ground 544 lift comp cam.

and have ran 10.90's with it.

351coupe

Your gonna need to build one nasty 347 for 500n/a whp.