My 289 Dyno

[66fasterback]

It's a 289 bored 30 over Diamond pistons. A crane powermax hydraulic cam. paxton supercharger @ 7 pounds boost. 750 mighty demond carb. 110 octane. @ 6300 rpm 471 lb-ft @ 6300 rpm 566 cm-hp . I had it built at a race shop in my town. Dyno day kicks a$$.

 

[302 coupe]

sounds good, got some pics?

 

[66fasterback]

not yet

 

[allcarfan]

You gained almost 200% more HP by swapping cam, carb and adding a supercharger? That is pretty impressive.

 

[2bobp]

It's a 289 bored 30 over Diamond pistons. A crane powermax hydraulic cam. paxton supercharger @ 7 pounds boost. 750 mighty demond carb. 110 octane. @ 6300 rpm 471 lb-ft @ 6300 rpm 566 cm-hp . I had it built at a race shop in my town. Dyno day kicks a$$.

Are these engine dyno figures or rear wheel figures? Which type of dyno? Do you have any copies of the sheets you can post?

Congrats on the Numbers!!

later
bob

 

[66fasterback]

well there is a msd & rollerrocker arm's. the list go's on & on. all of it is polished heads intake supercharger alt. If you all want a brake down my engine shop said he would answer your ?

 

[66fasterback]

well the dyon room. well it is hooked to all the goodies oil water temp. exhaust fans. get it started bring water temp. up and oil temp. shut the door turn on fans get behind the glass and all the gadgets let it rip ! it's like being in discovery channel movie. It was fun

 

[88 Fox GT]

That's really impressive for a 293ci engine on only 7 psi of boost.

 

[allcarfan]

So that was flywheel hp?

 

[66fasterback]

yes not to the tire. I think it's about 11 % loss going threw drive tran.

 

[Fostang]

try more like 20% of loss.

I wonder what my blown 347 will make according to a desktop dyno on 10 psi with 10:1 comp I should be pushing 580 hp @6500 rpm. HMMMM

 

[66fasterback]

Tomorrow i'm cuting my tunnel out for my t56 that I got from darkhorse. Then putting in the engine. Then try to get the right fit. Today I put in my 9 in. with cal trac.

 

[88 Fox GT]

So you should have a 16%-18% loss with a manual.

 

[triostang]

so that paxton must help you out alot

 

[triostang]

i need to get me one of those...but it says its for 65-68 sbf, would it work for my 72 or 69?