My APS 402ci twinturbo build..pics

[RedVertTA]

Those are pretty big valves for stock heads.

[TNTramair]

Way to go APS twin brother.! That is some great numbers for 9 psi and your combo give me hope that mine should make some decent numbers when dyno it next spring hopefully.
I imagine it feels like a pretty wicked beast at even 9psi. I am fairly impressed with mine even with no boost on the built 408 and haven't even gone past 50% throttle yet.

what fuel system do you have again tnt?

I am going dana 60 think with 3.54 gears. Then 4l80e swap with think yank py 3400e stall. That stuff will finish my build pretty much.

Should have maybe just disconnected the inlet ducts on the dyno and tried to see what it could do at 15psi or so. Bet that would hit the 800 rwhp range on auto and maybe 850 on m6. Thats what I am thinking. Shouldn't need 18psi on the 402 or 408 engines to hit that. Assuming a persons clutch or auto is holding the power.




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thank you. im running a Dual Racetronix intank pump with new AN hoses (forget the size) for feed and return....60# injectors as well but i may have to go bigger if i ever decide to increase power as they are at about 90%right now.
as far as rears...im lookin into Midwest Chassis for hi fab 9"...for the price and what you get, it cant be beat.

[TNTramair]

Those are pretty big valves for stock heads.

yeah...compared to an aftermarket head like AFR these heads were suprisingly close in airflow also so i figured id give them a try. i figured the added cost of an additional $1200-$1500 for a set of aftermarket heads wouldnt benefit me at all. $ to HP ratio, it wouldnt be worth it. worse case scenerio, if these didnt work out id get some TFR's or AFR's and resell these probably for the same amount i paid for them. but, so far, so good!

[RedVertTA]

May I ask how much you payed for them?

[TNTramair]

$800.00

[99TAWS6]

Are you running a boost referenced regulator.If you aren't the 60s will be used up much quicker they can take a lot more fuel pressure. How is idle with those. Not sure if will stick with the bigger 79 high impendence that are now offered or go to low imepedence and get some 96s or something. Wonder how big would be needed for e85 but we don't have it here yet anyway maybe next year or two.

[TNTramair]

Are you running a boost referenced regulator.If you aren't the 60s will be used up much quicker they can take a lot more fuel pressure. How is idle with those. Not sure if will stick with the bigger 79 high impendence that are now offered or go to low imepedence and get some 96s or something. Wonder how big would be needed for e85 but we don't have it here yet anyway maybe next year or two.

running a areomotive fuel pressure regulater and a Hobbs switch for the fuel pumps.

[99TAWS6]

Why not take up the base pressure a bit more than..

[TNTramair]

well, its workin ok the way it is now so i dont wanna mess with it. when and if the time comes to raise the boost i may have to redo some things anyway and if pressure becomes and issue, ill address it at that time.