irocsupercharge

I have a chevy 350, 4 bolt main and, board 40 over 2p.r.s. The motor was supercharged with forged pistons "speed pro 9.72 compression ratio" Pollished and ballanced stock rods and crank.
Heads have Comp cam pushrods, roller rockers, port and pollished 2.08 intake, 1.60 exhaust valves i keep the cast iron heads for better duraibilty with boost. Carb is a holly 4150 double pumper 650. cam is a mid supercharger cam.
With boost at 5psig and some new nitto nt555r drag dot the iroc z was fast but now fast enought. "theres that saying go big or go home"
*I pulled motor sold supercharger and ordered a EAGLE 4140 forged crank 3.750" stroke, 5.7" rods, int. balanced (383 crank), i planed on keeping my pistons and going with SCAT pro comp I beam forged 5.7 rods pressed fit.
* Do i need to do any block work to run this set up?
* I know that the 383 crank will raise the compression will these pistons still work? Or do i need to buy the pistons with the rod pin higher up in the piston?
* What rod/ piston combo would be best for this motor with out having to sell my first born son to afford? "not a cheep set thoe"
* I can send my carb of to c&s for $600 the can make it a blow throw carb that will hold 750 hp. I plan on running 15psig to 20 psig, Will that carb do the trick?
Parts list that i have for the build:
: high flow oil pump, with arp oil drive
: summit 7 qt oil pan
: The turbo Holset HX40 pro:::: "off of a raced out cummings diesel" Here is what i know, unfortunately the tag on the compressor housing is missing:
6 blade compressor wheel, 60mm inducer minor
12 blade turbine wheel
T3 tangential exhaust housing, and it says "14" in the casting, so I'm assuming a 14cm^2 housing.
Internally Gated
3.225" ID V-band outlet
Casting on turbine housing:
3533221
14 164 06 IS that a good turbo for what im trying to do??? and someone told me the internal wastgate will not work i didnt understand why?
: ARP head bolts
: Inter cooler kit with piping and cheep blow off valve
: ebay twin turbo headers with a costom Y pipe for single turbo
: EAGLE 4140 forged crank 3.750" stroke, 5.7" rods, int. balanced (383 crank),
: Champion duel core radaitor alum.
Thank You fou your time and help

calebzman

iTrader: (3)

I would keep the compression ratio around 9:1 or below with that high of boost. That turbo is too small for your goals though.

noboostnogo

iTrader: (4)

If it is a t3 housing then sell it and get something larger. Pistons won't work u need to lower your compression like calebzman said get arp head studs instead of bolts. For the carb I can vouch for csu and its cheaper too. What intake are you using? What ignition system?

Orr89RocZ

iTrader: (20)

Need a big dish piston if you plan to run much boost through that motor with Iron heads. I'd shoot for no more than 8.5 to 1 on Iron heads. 9 to 1 with aluminum. Unless you have E85 and or use a bunch of meth injection.

irocsupercharge

i was thinking about a victor jr for better higher rpms or a ebr. performer for faster spool. "not sure if that makes sence dose that sound rite?" Yes its a t3, what is the highest boost that turbo can handle? and im going with stock ignition with the msd 6a box with msd boost timing master thank you for all of you help

noboostnogo

iTrader: (4)

i wouldnt use a dual plane intake with a blow thru and turbo. Also the t3 turbo is tiny for a v8 sell that turbo and get one with a t4 housing, specially for a 383. if you want single get nothing smaller than t4 .96 or 1.00 would be great too. The master power t76 is a great piece if you are trying to stay within a budget, its like 600-700 bucks and can make some power.
Since my 350 gave out i am now building a forged 383 and i will be running the turbo i have which is a master power t-70 with .96 housing, its a small compressor for a 383 but itll do for now, im focusing and spending all the money on the bottom end, i will upgrade later.