Originally Posted by xx_ED_xx (Post 3558328)

Fast makes the biggest that i have found so far drop in injectors for 8.1 85 pounds. I am now in possesion of a raylar intake since my truck dynoed 430hp to the wheels with stock intake, stock tb, stock maf, and stock injectors. running at 122 % duty cycle at 5000. I will do a dyno comparsion of both my self made intake and raylars with everything else being equal and bigger injectors.

Also anyone bought any of the dart stuff?

:bigbird:

Originally Posted by Keith Atlanta (Post 3571359)

What kind of fuel pressure are you running to get 122% duty cycle? What was the A/F ratio?

Originally Posted by JimV (Post 3339836)

I don't have any ported numbers on the new heads yet, but I did find the ported numbers from the stockers when I was at Innovation. Intake valve 2.250 ex 1.820

Lift..............CFM...............Exh.CFM

.2................157.................141
.3................230.................190
.4................292.................221
.5................330.................238
.6................348.................249
.65..............353.................251

These heads made 600hp(dummied down to 590) and ran on one of the bat boats in 06. They used the stock intake manifold and I believe a modified airvalve.

The iron eagles will flow more air with a 2.3 valve, very close to 400 cfm @ .700 lift

Originally Posted by crayolacrazy (Post 3574162)

can someone get me in touch with Jim V

Originally Posted by daveintexas (Post 3578774)

I have been thinking about upgrading the single 496 HO in my boat for next year and gave Tyler a call. He has a 496 new Dart head, cam, ECU package that puts out around 575hp n/a. I will let him chime in here on details if he so chooses.

Originally Posted by Rage (Post 3587769)

PM me price?

Originally Posted by crayolacrazy (Post 3589817)

I got a set of the Dart heads today ,Im not sure if it was a mistake yet .Im going to have them flowed , and a few changes,like valve size , compare it to Tylers cnc head.From the nakid eye I think I went backwards they dont have bronze guides, the spring seat is small,

Originally Posted by jmccart (Post 3589845)

Good for you man,that totally rocks! I would love to some real photos of those babies. Share any info you can please.

What is up with the shortblock you are putting them on?