okay let me get this straight my goal is being in the range of 750-850 whp.
I know it might be impossible with this kit but lets see if I can do something
about it.... I really don't mind the lagy turbos even it was on/off switch like..
getting such a thing to be built and having the dyno sheet to prove it would be
nice.... remember the green g35 that produced 905 whp.. it was done before
so why not ....

 

Save yourself some money and just sell the momentum kit and buy a BP 76mm single turbo kit. Otherwise you will be waistsing your money and time trying to fit a bigger turbo with the momentum kit. Take a look at the momentum gt37r thread and see how much trouble they went through getting it to fit properly.
For that power goal you really need to rethink your fuel set up also

 

IIRC, that sounds high for HR bolts as someone else briefly mentioned. L19's are soooo much money, though. Could he get away with a cheaper option?
I think the issue with the VLSD is not that it catastrophically fails, it's that the V turns into an NL, where NL stands for "No Longer".

 

How much will it cost when the heads start to lift if you push things?

 

^ No argument, here. I have not searched, but I'd like to know how high people have pushed ARP's compared to their L19's. Reading on their site there is no question to me that L19's are spectacular, but I'm inclined to think (just think, I certainly don't know), that they are overkill in nearly every application.
I'd welcome the knowledge to prove me wrong, though!

 

Not to mention down time

For your goals you fuel pump is to small even the DW300 will be small, your clutch is not strong enough and you have the wrong turbo kit.....time to change your goals or rethink your set up??

 

I dont think you have much that can be over kill when attempting to push 750-850whp out of 3.5L back before L19s there were lots of head lift issues on standard ARPs when attempting big power the solution then was larger studs (13mm vs OEM 11mm)t hat need to have the block cut to fit them. So the L19 was a better/cheaper in the long run solution.

 

^ Wow! Surprised to hear. That's a bonkers amount of force to elongate them.
Thanks for the insight.

 

This is what your list should look like for 800-850WHP
the red stuff is what should take place of the stuff in bold

on to the engine specs:
CP 8.8:1 pistons
Carillo Rods
all new ACL RACE bearings
1mm oversize Supertech valves (and springs)
3angle valve job
New valve guides/seals
Scott's Performance Cams Stage 2 255/255 213/213 .410"/.410"
HR head gasket
HR head bolts-ARP L19s
ARP Main studs
externals:
Momentum headers and turbo kit gt35r " I may go with a bigger turbo gt3794r or gt40r ????" - Boosted Performance 76MM turbo kit or big TT kit, like JWT 850, Greaddy 20g, APS extreme
full fuel system "rails, regulator, return line, etc..."- CJM Stage 2 fuel kit, CJM twin pump
bocsh 1000cc injectors.


EMS:
I will be running UPREV for a while to save up for a Haltech or proEFI128./48 should be ok also

drivetrain:
DXD-F stage 5 Southbend clutch - Some kind of twin or triple plate clutch, SPEC twin plate ST trim should be good and its about $1100
JWT flywheel
VLSD

 

SPEC is not a clutch I would conceder, and if I'm going twin clutch I'm buying an OS.
but I might need sometime to save up for a clutch since it's 2100$$$....
as for the L19s they are a must as will as a stopper style HG.
I started considering a TT kit seriously but I'm kinda loss....
Greddy 20g, GTM stage 5, or APS extreme TT.....

 

Don't do Spec clutch as you stated. Search it here, some people had some very bad luck with it not holding the power/torque it was advertised at doing. Plenty of other good options out there.

As for plenum. I would go with APS Plenum or Cosworth. APS will be tough to find unless some one is selling one on here

 

I went spec sst twin plate. Str8dum has it with no problems at all. I think the few people that had the problems were the few first clutches they made. I'll risk it

 

I don't think the momentum kit will make more power than what a gt35 can make, based off the lack of big power on gt37 cars.... Do some searching.

 

that clutch should be more then able to handle what he is looking for, thats the same one i have gona suck on the left leg but will hold 800 ft lbs. and its only $1000 for clutch and flywheel.

 

Os giken twin won't come close to that hp. Mine let go at 607hp. When i called os giken in Cali about it they said it was rated for only 500rwtq which was well below the 580tq that caused mine to fail.

On the other hand the spec twin lived on str8's car with an 800hp dd dyno run. Also, whoever said jwt flywheel with the spec obviously doesn't realize that multi plate clutches come with their own flywheel system.

No matter what kit a gt37r is not an 800hp turbo on a 3.5l engine. You will need a gt40 and to make that front mount work you will have to custom make everything up front like Hal. On that subject the gt4088 build on here didn't break 800hp either.

 

BLDG made like 650rwhp with his (gt40), he had rev up cams, an intake spacer and on pump gas. I do think at one point he made 700whp but not sure. He didn't like broadcasting his build stuff.

 

CAUTION: Blatant Attempt to ***** Parts

I've got a Carbonetics Twin in my garage collecting dust. PM me if you are interested.

 

on race gas i think he was in the 700hp but going from 700hp to 800hp is a huge step. I haven't seen a gt40 break 800hp on a 3.5 liter engine. 700hp is doable on race gas but that's not 800hp

 

Ive never even heard of a gt40 making 800whp... on a 2liter im sure its possible but yeah not happening on a 3.5

 

will here we go again.... The title should be changed from MT kit to APS extreme lol...
guess the mod bug anit leave anytime soon hahahaha..
so I have my eyes on an APS extreme gt30r twins I guess it was upgraded from the old
gt28r's... just when I thought single turbo kits are up there for HI hp customers lol..
It fails again... I'm going TT after regretting them for ages now....
I wanted more of a looker back then... but f*** that whp matters more right now..
I already got the L19 studs, ARP mains.
Injectors are on the way...
I'm kinda lost on which fuel pump should I go with welbro 400, DW 300, or injected
performance 500 " which was know as the bugatti pump"
I read about it some time ago but never seen any customer review...
I already have the return fuel system custom made last year that included Ross rails/
regulator/return line/feed line. "I don't remember the sizes of the lines but they where
-7 or something like that..." I would have to go to back and check on them...
clutch wise I'm keeping my set up "SB sprug 6 pack/JWT flywheel" till I save up
for a proper clutch triple or twin lets see how much power I make and then buy it.
So any recommendation on what I have to do on the kit or anything else ??????