454 TBI Build

[Sla90lx]

Hey guys, been a while since I've posted. I know I'm prolly gonna get flamed on this one but I've built a 454 for my sons 95 ECSB OBS. I've got pretty much everything done except for paint and transmission. I will prolly have a lot of questions as I try to fire this thing up and especially when I go to dial it in.
Here are some specs:
Standard bore 94 genV block
Flat top stock pistons
100cc 96 vortec heads, steel roller rockers and springs for cam
9-1 compression
Lunati 60203 cam, maybe a touch to much
.542 in .554 ex. Dur 227 233 @ .050"
Holley tbi, MSD dist, dynomax shorty headers

Thinking between 400 to 450 HP
Question for now is which fuel pump? I was thinking of going with 96 up vortec truck pump after talking with the manufacturer (airtek). Next concern is the break in. Should I just throw a Holley I've got on it for that or can I start off with a base tune close enough to not blow this thing in the first twenty minutes of it life?
Thanks for reading this and I look forward to your responses.
Chris.

[EagleMark]

Get roller rockers while you replace that cam with something smaller....

[Fast355]

Get roller rockers while you replace that cam with something smaller....

That much cam in a 454 is like have a 215-220* in a 350. The cubes swallow the cam pretty well and the big block will have more vacuum than a small block with the same cam specs.

[Sla90lx]

Yea, I know in the big block world that cam is very mild. Shortly after I built the motor I found someone who had built an almost identical set up and compaired that cam with the 60202. It had more torque but the same hp with those heads the limiting factor.

[Nasty-Z]

Have you done any work to the heads ? You will need to address guide height as well as a good spring package with rotator eliminator with those heads . They cannot be left stock with almost any aftermarket cam .

I have built quite a few 454 combos with the Vortec heads as well as a few 496's , excellent performer for the $$ spent , the heads will support more than most think .

I would loose the Holley TBI and find a good 454 Unit . Oh , and the Vortec F/P or a TPI pump will be fine.

TOM

[Sla90lx]

Tom, thanks. The heads are ready to go. I have the throttle body off of the ,sorry, 92 not 94 454. Picked up the holley real cheap and saw that the bores were larger than the gm. So stock would do better huh?

Chris.