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went for sum dyno time with the 90' 454SS

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Old 12-29-2013, 12:07 PM
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Default went for sum dyno time with the 90' 454SS

i know its not an LS truck but hang in there with me, its my fun toy!!

my dad gave me the truck many years ago and after blowing up stock motors a few times i decided to build me a better engine and trans combo for it..... i just got done tearing the truck completely apart and painting it all over so it was time for sum numbers....so here we go!!

i took my 454ss truck an strapped it on the dyno friday to make a few motor pulls and a few nitrous pulls. the motor is a carbed 461" with aluminum heads, comp xtreme cam, roller rockers, rpm air gap intake and a 950 carb, longtubes, 3" dual exhaust with a dynomax x-flow muffler and a return style fuel system for the added nitrous which is an edelbrock plate with 175 jets in it and nos cheater solenoids. 4L80E trans with a revmax 3400 billet converter and the stock 14bolt rear. all pulls were made in 3rd gear(drive) with the converter locked. we turn the truck 6 grand but i noticed it makes it biggest power at low 5 range on motor.....

motor made 416rwhp/497rwtq
nitrous made 577rwhp/653rwtq

motor pulls
making a couple motor pulls with my 90' 454SS truck - YouTube

nitrous pulls
making a couple nitrous pulls with my 90' 454SS truck - YouTube

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i know it isnt a powerhouse like alot of you guys trucks on here but its a fun ride and makes alot of noise so thats good enough for me! hope you all enjoy it

Jamie

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Old 12-29-2013, 12:12 PM
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That's awesome. I want one of those trucks someday.
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Old 12-29-2013, 12:36 PM
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Very nice, what cam is in it?

Sharp truck.
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Old 12-29-2013, 01:24 PM
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Originally Posted by 03sierraslt View Post
Very nice, what cam is in it?

Sharp truck.
Its the 588/593 comp xtreme
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Old 12-29-2013, 02:06 PM
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Cool, I have always liked those trucks.
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Old 12-29-2013, 02:15 PM
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heres a couple pics of it....

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Old 12-29-2013, 04:36 PM
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Clean truck man! I would drive one of those any day
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Old 12-29-2013, 04:56 PM
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On the spray you start at 12-1 then it goes down to 10-1 afr?
Am I reading that right?
How do u control timing, tune and fuel for the spray?
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Old 12-29-2013, 05:00 PM
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Any underhood shots?
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Old 12-29-2013, 05:46 PM
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Originally Posted by Choda View Post
On the spray you start at 12-1 then it goes down to 10-1 afr?
Am I reading that right?
How do u control timing, tune and fuel for the spray?
I need to jet the fuel solenoid down a touch to lean it a bit. I didnt carry my jets with me and couldnt change it. I hope it brings the power up a bit when i lean it a lil bit on the spray.

Timing is controlled and pulled via the timing retard on my msd digital 6 box.
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