My 598 TFS A-headed build

This is a Jet-Boat Bob build
 
Ford A-460 block
4.60" bore x 4.50" Scat 4340 crank
Scat 6.80 Rods w/ ARP 2000 bolt upgrade
Diamond pistons 14.4 compression
Comp solid roller Camshaft
TFS A-460 heads w/ 2.35 intake valves, stock castings, Un-Ported
A-460 intake w/ very minor clean-up work
Wet sump w/ Kaase pump
Quick Fuel 1450
Renegade 112 fuel
 
The results are in,.....
Anyone care to make a guess on what it made?

1080?

PM me some cam numbers so I can get close.

If it is a Lemuel Evans cam, it made 995 @ 6900

IDT-572 wrote:If it is a Lemuel Evans cam, it made 995 @ 6900

LOL


Yep,......It's one that Lem spec'd out.

You better tighten up all your rear suspension bolts   

Blake WILL be close.   Nice build  

Come on MAN! Don't keep us waiting!!!     

  

Nice build Keith!

Any thoughts on why hp peaked at 6500?

I woulda expected it to peak around 7000.

dirt_worker wrote:
Any thoughts on why hp peaked at 6500?

I woulda expected it to peak around 7000.

I hadn't give it a lot of thought,..........BUT,... I'm actually glad it worked out like it did. This way I don't have to spin it to the moon to make the needed power. It'll be a lot easier on the valvetrain.

If I had to make a guess,.......the cam profile plays a major factor in it peaking where it did, as I told Lem when he spec'd it out, that I was planning on utilizing stock un-ported castings for the heads & intake.

IDT-572 wrote:If it is a Lemuel Evans cam, it made 995 @ 6900

That is almost scary!


Awesome numbers sir. Stock heads, nice!!!

Copperhead wrote:

dirt_worker wrote:
Any thoughts on why hp peaked at 6500?

I woulda expected it to peak around 7000.

I hadn't give it a lot of thought,..........BUT,... I'm actually glad it worked out like it did. This way I don't have to spin it to the moon to make the needed power. It'll be a lot easier on the valvetrain.

If I had to make a guess,.......the cam profile plays a major factor in it peaking where it did, as I told Lem when he spec'd it out, that I was planning on utilizing stock un-ported castings for the heads & intake.

I'm guessing it wants more airflow...

I excited to hear how it runs!

 

Very nice build and numbers with un-ported heads. Jetboat does some nice work for sure.   

991.2 hp @ 6,300
991.9 hp @ 6,900

There is realy not a pronounced 'peak'.....looks flat to me.   

What kind of converter/stall you going to put in there?

windsor wrote:What kind of converter/stall you going to put in there?

 
I'm going to try to utilize my Ultimate Converter Concept 9" unit that I used on my previous 557 engine.  I might have to have it adjusted to suit this set-up, but I want to try it first and get a baseline before I send it in.
 
Heck,.....If I'm lucky it might be good to go.  Time will tell.

so, where did it stall?

Lem Evans wrote:so, where did it stall?

 
It's been 2+ years since I ran the truck, BUT,.... "IF" I remember right,...
It would flash to around 5500 on the T-Brake.

Cool...hope the conv works out nicely.


Would love to see lower rpm torque numbers.

Very nice!! Unported heads too. Are they 18 bolt heads?

So are these the same heads you had on the old 557 that Seth originally built?

no

Ah. Yes, recall now that was sold a second time. Thanks, Lem.