Think of building a LSX 454 NA
What is this motor going in ??
TFS 245's, Sheetmetal intake, Custom cam. Not going to hazard a guess on a cam for this monster.
Give Ron at Vengeance Racing a call and tell him Doug sent ya. The number is in my AVATAR....I am sure Ron can give you some serious recommendations and even a quote for the parts. Good luck !
You have a big bore, so select a head that can use it. I'd go PRC LS7's all the way. We even have a 454 cid LSX short-block in stock if you need a 24X reluctor setup.
Feel free to give us a call, and any of our sales guys will be happy to discuss your options with you. We can also put an estimate together for you that will show the total shipped to your door! 
Trevor
Texas Speed & Performance
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Co-Owner, Texas Speed & Performance, Ltd.
2005 Twin Turbo C6
404cid Stroker, 67mm Twins
994rwhp/902lb ft @ 22 psi (mustang dyno) www.Texas-Speed.com
Pricey, but well worth the money.
Also on the intake if like before budget is no factor. I would look into Beck Intakes.
Last edited by RoninWS6; Jul 16, 2009 at 08:00 AM. Reason: Wanted To
You can go with PRC LS7 heads for a lot less money than a set of All Pro LSW heads so it really comes down to how much you want to spend.
We've got a 454, few 457's and a 440 and going right now and the customers are using: PRC LS7 heads, TFS 245's and All Pro LSW's so we see it all.
The AP's flowing at 400+ are a very very nice head and built incredibly sturdy but your going to pay for them as well. Example for you.. TSP has the PRC's for around $2250 complete IIRC if you dont go with Titanium valves and a few upgrades. BUT the AP's start at $3200 bare.
I have a customer right now who has a 454 he has to sell, its not quite finished being built but his dad got sick and he needs the money now to help so if you are ready to buy I would like to put his 454 in front of the line to help him out. ( I've been paid it's not about me trying to make money for me, it's about me trying to help him and his dad)
HKE has one of the best reputations around so your in good hands as far as that goes.







