valiant65

I have a 6.0 engine project which is supposed to make 1000 fwhp with following parts:
-stock crank and block
-mahle 4.020 dish pistons 9.2 comp with 64cc heads
-eagle 6.125 h-beams
-hyd cam 23x/23x lift .610 lsa 114
-arp studs allover
-patriot 6.0 stageIII heads 64cc
-homemade turbo kit (1.75 pri 2.5 coll & crossover) for B&W S480 T6 1.32 a/r
-megasquirt II

Question is which intake is better for me, jr or super?

deuce_454

what you need to remember is that you will be flowing the same volume of air at boost as you would be if you ran naturally aspirated... (P*V=n*R*T) but the mass of air will be proportionately larger with increased boost pressure.. so you should ideally be looking for an intake that gave you more low to mid end torque to help get the turbos mooving..

edelbrock is comming out with a cast tunnelram that should be the ticket for you... but making 1000 Hp thru an LS6 intake isnt a problem (untill it explodes from the increased pressure that is :-) )

stevieturbo

Stock LS6 might be better lol.

valiant65

Thanks to all, just chose slightly used victor jr for my build.

fastls1inaz

iTrader: (2)

Why did you choose that intake?

I'm having the same questions on what intake to run as well.

valiant65

Couple of things made my mind:
-I will have only 367 ci so I need parts that do not kill the whole low end torq
-smaller runners give more velocity before boost
-One friendly member here made an offer to me... Thanks BlwnTA!

valiant65

How big throttle body? Ported stock enough? Coldside will be 3" tubing, so 78mm would still be bigger than tubing inside.

stevieturbo

Stock TB's have been used to 1000bhp without any problems.

It does seem daft using a TB that is a lot larger than the plumbing.

Fireball

iTrader: (21)

I went vic Jr last year and make ~1400 FWHP. Changing to Super Vic for 2009

Ryans_pewter_ss

iTrader: (9)

I have a black powdercoated vic jr for sale, 175$ Pm me if anyone is interested.

deuce_454

yeah, now you mention it... i just bought mine friday!

the 78 mm will be more than enough.. its the same deal as the intake, same volume air at higher pressure = more mass flow, but same volume flow as stock, so 78 will be fine

some builders mount the TB pointing upwards like a 4bbl (on a plate to adapt) to avout the crappy flow of an elbow.. a 3 inch mandrell bend will work much better and be way cheaper than a fabricated elbow

ls1290

iTrader: (20)

That is an interesting method for mount the TB. What is that going to be placed in?

stevieturbo

Interesting yes...but it also reduces the volume of the plenum, and could also affect air distribution.

Hopefully Edelbrock will get this new intake into the shops at a sensible price...soon.

sciff5

iTrader: (1)

Thats an interesting TB setup. Might work fine, but I dont think anyone has tried it on here. I would like to see if it effect distribution of air flow.

deuce_454

schwartz racing uses it on all his 720+ hp ls7´s for ultimas (he sells like 30 of them a year)

this very engine is goung in a 1971 cutlass (thats the reason its stroked to 455 cui) www.schwartzperformance.com look in projects

quote from Hp:
We're taking this restored 1971 Cutlass Supreme SX and transforming it into "Cutlass LSX 455"
With a complete Schwartz tubular chassis, rack and pinion, QA1 coil overs, Winters 9" aluminum housing with Moser 3rd member, Baer 6 piston monoblock 6s calipers clamping 14" rotors, Forgeline modular 18x9 and 19x12.5 wheels, A Schwartz stroked 455 cubic inch dry sump LS7 Z06 engine using the original Oldsmobile 455 bore and stroke. It has custom Wiseco forged pistons, Lunati camshaft to our specs and 600 hp, mated to a Viper T56 six speed. It'll be riding on Michelin Pilots, 345/30x19 and 255/35/18's

Update 11/06/08. Final Assembly in process. Upon completion look for it in Popular Hot Rodding Magazine.

the engine has been dynoed so any individual lean conditions should have been caught.. but thats speculation on my part...
http://www.schwartzperformance.com/p...x?projectid=15

1CAMWNDR

iTrader: (21)

How will the TB mounted on the intake like that mess up distribution? The Edelbrock elbows have a divider in them to supposedly help distribution.

deuce_454

i think what they are referring to is that at part throttle, the blade will push air towards one end of the plenum...

according to jeff schwartz there is close to no measurable difference in EGT front to back at half compared to full throttle, so its an academic issue..

1CAMWNDR

iTrader: (21)

Then at part throttle with a carb it would do it worse since the front two barrels only are open.
I don't think there is anything to worry about here.