557-A429 Bracket Build-Dyno Results

Special thanks to Pat, Mark and, Glenn McCreery at Nye's Automotive here in Muncie. http://www.nyesautomotive.net/

4.5" stroke X 4.440" bore
A460 Block
4340 Eagle crank and rods
JE Flat-top pistons-15-1
Crower solid roller .827-.822 lift 325*-335*adv. 290*-302* @ .050"
A429 heads ported
1150 old style Dominator
Victor intake
ATI balancer
MSD crank trigger and distributor
Moroso Fox-body pan

I had the cam-corder set up inside the dyno cell at the same time but, I'm having trouble retrieving it. This video was shot with a small camera and it's the only one I have for now.
http://www.youtube.com/watch?v=Fpgit05q8hw

nice job man !!!! those are some sweet #'s ....very close to my deal expecially the torque numbers .....that ought to be a monster in you chassis , keep us posted on your times

just think if it was a big bore deal....................

Good numbers ........... It looks like it's a little lean, did you try fattning up to between 12.5 to 13 afr to see if it would make more power .

When you gonna hit the track............ ? Be sure to keep us posted, should be a fun ride.

Very nice #'s

IDT-572 wrote:Good numbers ........... It looks like it's a little lean, did you try fattning up to between 12.5 to 13 afr to see if it would make more power .

When you gonna hit the track............ ? Be sure to keep us posted, should be a fun ride.

You are right...it is a touch on the lean side. These 2 pulls were made with #98 jets squared...that was the biggest we tried. We made 7 pulls total trying to sneak up on the AFR. I wanted to try to keep to the lean side for the consistancy. We generally race in the afternoon into night time...big swings in the density altitude. I figured this may make the car a little easier to dial. As the weather warms up, this tune-up should be about right. (I hope.)
My first 557 made 820/736...the car ran 5.70-5.60's with it. Our track opens the first of April and I have a lot to get done. (Basically had the whole car apart this winter.) Should be ready sometime mid-April or so. I plan on seeing ya'll at the Bash!

Very Nice !!! Congratulations.

Nice numbers i was off by 17.2 horsepower and 3.8 lb.ft. of torque on my guess.

Later Mark.

That's a killer 557 !!! You'll give them chebbie boys something to cry about with that combo

Damn I was close
I was off 5.2 hp and 6.8 ftlbs

Great #s how much does ur car weigh? thx.

deliveredfast wrote:Great #s how much does ur car weigh? thx.

About 2600 or so with me in it.

You got that thing in the car yet!!!!!!!! I'm about ready, to give the ole whoop-whoop on the finish line It's a good thing to have another FORD in S/P this year since there is usually only three out of 80 cars but I love the fact they HATE us!!!!!!!