lt170chevelle

iTrader: (2)

i am just wanting to get some feedback on piping diameter from header to turbo. i have a large turbo setup and was using 2 1/2 pipe to the turbo, but would take forever to spool. so my question is would it spool alot better with 2" or even 2 3/4" pipe before the turbo without too much restriction? im sticking with stock displacement on my 94 lt1 motor and plan on getting a decent turbo cam to help with the lag issue. any help would be appreciated.

1970 chevelle,94 lt1,a4,v6 loose converter,headers,etc bolt ons

TT402LS1

iTrader: (5)

What size exhaust housing are you running. You might have to go to a smaller one to get it to spool faster.

Ron

lt170chevelle

iTrader: (2)

not too sure of the spec its proballyclose to a 90 though . but im thinking about going to smaller pipe to increase the velocity into the turbo.

Bird-Of-Prey

iTrader: (23)

You might get a little more help if you were to post more info on your setup.

1. What kind of turbo is it?
2. What size wheels?
3. What flange (T4 or T6)?
4. What wxhaust A/R?
5. Where is the turbo mounted?
6. Is your pipes coated or wrapped?

I don't think going to a smaller crossover diameter is the answer.

lt170chevelle

iTrader: (2)

As Far As I Know The Hot Side Is Around A 90 A/r
The Turbo Is Up In The Engine Compartment
Pipes Not Coated
Exhaustwrap On 75%of It
The Flange Is A T6 Flange

lt170chevelle

iTrader: (2)

I Know This Sucker Is Huge But Would Like To Make The Best Of It. Till I Can Afford A Nice Smaller One. Not Really Interested In Trying To Find Out About Another Exhaust Housing

Ping King

iTrader: (20)

what model turbo?