TexasHardcore

I'm a 1st gen guy, but finally got a '97 Dually 5spd. so I'm stoked about making some real power. I don't want my truck to lose it's reliability or fuel economy, but I want more power as all of us do. I also want controllable smoke.

I did the BHAF and removed the silencer ring the other day. I'm ordering boost/egt and a pod next week, and 4" downpipe & exhaust will be coming next.

Aside from those basic mods...what should I do next and please give some details...

AFC Starwheel...what do I do there?
GSK...get the kit, or do the washer mod?
Timing Adjustment...how to?
Fuel Plate...#10 or grind the stocker?
Deivery valves...whats the skinny on em?
Intake Plenum...those things worth the cost?
Injectors...best bang for the buck?
Turbine Housing...14 or 16 or ??
I have an HX40 in my garage...should I bolt it up or hybrid it with the 35 or ??

caleb c.

Hey sounds like a nice ride, congradulations! Good to have ya' back around here!

clutch1

Slide the afc forward, Grind your own plate, starwheel turn it slightly toward front of engine adjust to where you want it more preboost, GSK get the 4000rpm kit,

TexasHardcore

I heard you need upgraded valve springs if you go with a 4k GSK kit?

Forrest Nearing

you only need upgraded valvesprings if you want to rev over about 3400rpm. I saw 3500 a number of times w/ the 200k mile springs on my 97. accidently saw 4000rpm a couple times durring tire spin

buy a kit and definately do the 4k... grind your stock fuel plate to a #100 profile with a 215 pump you SHOULD be able to slip the stock clutch w/ just the plate...

once you get a clutch, I would go w/ the DDP4 injectors... the marine 370's are the best bang for the buck, but I think the DDP's are worth the extra money.

I can make 1600*+ at 50psi of boost on a ported head with the stock delivery valves... I've come to the conclusion that on a 215 pump w/ good size injectors, DV's just make more smoke and heat... I'd stick w/ the stockers

I wouldn't mess w/ an intake plenum... not doubting that they help somewhat, but not enough to warrant their price.

definately bump the timing to 16.5* or so... I'd go ahead and bolt up the HX40 as long as it's a 60mm compressor and a 16cm turbine housingj. I wouldn't waste your time putting a bigger housing on the stock turbo, you'll outgrow it awful quick... I made 1300* EGT w/ stock injectors at 55psi (50psi drive pressure) through a ported head. that stock turbo doesn't stand a chance!

TexasHardcore

Forrest...always a great help, thanks. You think the 140hp DDP Stage 4 Injectors are good for daily use, occaisonal car hauling, decent mileage?

Forrest Nearing

the 4's are awesome... great milage, totally drivable, no problem towing, etc.