408 build questions...
#1
Staging Lane
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408 build questions...
Im about to pull the trigger on a new motor build..car is a full weight 6speed. 3.90 gears out back. 50/50 street strip car.I am going with a 408 but am unsure on heads and intake. my goals are 500+rwhp with a mild cam. most likely upper 23x duration. I will also be spraying a dp 200-300 when i go to track to put up some good numbers. Will I be able to attain my goal of 500rwhp with ported l92 heads and ported l76 intake? I understand aftermarket castings such as AFR an TFS 225 will give me more power but the performance gains seen seem to be minimal when u look at the extra price. also is there any other engine builders that offer ported l92s besides texas speed? sorry for the long post
#2
FormerVendor
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Bang for teh buck, almost impossible to touch the L92's. And yes, you can make that much power rather easily. I went by my machine shop today to drop off some more money for my motor, and they had a 408 on teh dyno. 11:1 on pump gas, Patriots, not sure on he cam, and it made 602 HP(flywheel). I do know it was a hydraulic cam though, and did not sound that nasty, pretty tame. These Gen III/IV just make stupid power
#7
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For max power I personally would install our new PRC 237cc heads. That being said for budget the ported L92 heads are really hard to beat. You can get them setup with a stainless valve for the nitrous & still be under $1500 or so. If money was not a concern than the PRC 237 head will make big power & fit with a cathedral style intake.
http://www.texas-speed.com/shop/item...d=992&catid=40
http://www.texas-speed.com/shop/item...d=697&catid=40
http://www.texas-speed.com/shop/item...d=992&catid=40
http://www.texas-speed.com/shop/item...d=697&catid=40
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Jason
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
Jason
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
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#8
TECH Junkie
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People will make a million suggestions, look at combos that work and go from there. If you want to keep it simple, I like the LS7 manifold based stuff as its the best for what it can do with simple packaging. Can feed 600+ rwhp NA in a 6 speed, weve made 530 in a TH400 on mustang dyno.
Plenty enough to get you in trouble
Plenty enough to get you in trouble