XPBaller

Sorry about my ignorance, but how would a 347 react to boost? Good, bad, or ugly?

SSKiller

That motor would love it!!!!!!

03BottleFedGT

we run a 347 a4 block with 15-18 lbs of boost and it loves it. has over 20000 miles on this set up and been raced many times and doesnt blow a bit of smoke, knock, or ping. just be sure you can get enough fuel to it we are running 42 lbs injectors at 675 horse at the tires and running out of gas. having to put in 60's

XPBaller

Well im going to begin the build. Its going to be a daily driven street car, but i think the first engine mod is gonna be a 347 kit, then later on an H/C/I, then later on some form of boost.


How streetable are 347s?

03BottleFedGT

ours gets driven to work and back everyday

Black Snake

Keep the compression low and you will be ok.

FullAuto

In a stock block, you might as well plan on keeping it at 10psi on pump gas. You should make 500+rwhp with a basic 347 and 10psi. You're block will never live to see 15psi unless you have a really porrly designed combo. But it can be every bit as streetable as a 302 so I wouldn't worry about that. The one piece that will have the biggest impact of driveability and power is the cam. Put good money into a good custom cam. If you're working on a specific budget, I'd compromise a lot of things to make sure I could afford a custom cam.

If you are looking for kits, I can get you a nice Probe/CHP kit at a good price.

ltrayne84

WOW! 5pnt0gt, What set up you got there? i'm very interested cuz thats a hell of a lot of horses and i'm runnin a 347 w/ no boost and am lookin forward to getting some better numbers. But i only want like 550 to keep it drivable on a daily basis

rcdblink716

what r u puttin down ltrayne84?

03BottleFedGT

dont know alot about the motor tommy higgins at higgins ford performance built the car. we bought it about 6 months ago. the car was in 5.0 mag in 99. it was built for a guy named ramond and he sold it to us. my buddy who owns the car now helped build it in 97. i will talk to him and find out what all is done to it. here are some pics of the car. when the car was dynoed the n.o.s.. it ran in the high 9's in th quarter i do know its a vortech r trim.

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