He said its running rich. it may be too rich.

 

The skirts are slightly shorter ...fully coated ...-6.5cc valve reliefs.. The block had to be notched another 1/4in more than with my previous clearance for when it was a 408. If you go even 408 definitely go with 4 bolt mains. I can see where the caps were walking before.

 

I think its my aeromotive FPR ...It's only running rich at idle...seems like I need bigger injectors according to my A/F ratio at full throttle. Im thinking 46lb

 

comming as soon as I get it right

 

Cool build, MTI built a few big cube LT1s in the late 90s, one I remember was a 409 for an Impala, the other was a 400+ cube motor for a red LT1 Z28.

I saw some one local selling your old nitrous motor. Made damn good power.

 

I had eagle forged I beam rods and diamond pistons on my 408 build and turned the rods in 2 cylinders into Twizlers..it was baddd!! The oil pump pickup was also just laying in the pan too..

 

Sounds interesting...how much power did you make before?

 

lol you beat me too it

 

are 46lb big enough ??

 

It made 576 on 110 race gas and street tires

They probably would be with high fuel pressure and race gas....I found some 60#'s last night I have decided to go with.

 

You made 576 on motor or...?
Kris

 

on motor

 

you didn't make 570 anything

 

thats true the motor did

 

dont play word games, im calling you out and I say your full of crap

 

 

You made 570 to the wheels? Or at the crank? Auto or stick. With the heads and throttlebody in the above pick? Those look like stock head castings.

Enquiring minds wanna know, AND see a dyno sheet.

 

When I seen this thread I initially thought BS, I would like to be proven wrong myself

 

Alek's 355 LT1 with a solid roller made 500whp still using the factory castings (i think). I don't find it that hard to believe a 408 made that kind of power.. who knows. I'd like to see this be true. Get a video of it being dyno'd or something

 

didnt he say he had shorty headers too?


I dont buy that that other boy made no 500 either...... easy way to tell though. Run the car