I bought a used procharger d1sc set up to run about 8lbs of boost, and I got it without the injectors and fuel pump. I know I need to upgrade my fuel system and clutch. Is 8lbs of boost safe for a stock 98ls1? Or do I have to get forged pistons, stronger push rods etc before I drop in the blower?

 

you will be fine. A good tune and plenty of fuel and you will be good to go. Might want to consider front mount intercooler, although not a must with a good tuner. Long tubes are are really good idea too

 

I would install an in tank Walbro fuel pump and 60 lb injectors, plus a tune. Bob

 

Just curious.... Why the intake? I thought it does not make as much difference with FI? +1 on the pump,tune and injectors though.

 

I think he meant to say in tank walbro fuel pump, not intake lol.

 

Im running about 7/8 lbs on a stock bottom end, you'll be fine with a good tune and fuel to support it.

 

I already have long tube headers, ls6 manifold and the kit also came with the twin aftercoolers. What is the maximum boost I can run without hurting anything? I want to also upgrade my heads cause I heard that the heads on a 98 dont flow that good but I am not shure with which heads to go with. I just want to get as much power as possible out of the blower without puting my engine at risk.

 

If you plan on building a forged moter to make more power in the future I would hold off on the heads and just build a brand new moter.

 

Oops, I did... lol Thanks. Bob

 

Id hold off on the heads, cause if you pop your motor you can take your brand new heads with it. Thats why I held off until I get my new built motor. As far as the amount of boost you can run 5 to 8lbs safely with a good tune.

 

My Brother is runnning 9 pounds and making 640 hp on stock bottom end and has never had a problem going on 4 years. It is all in the tune!!!

 

Seems quite impressive. How many miles has he driven in those 4 years though? And does he race or 'get on it' at all? Reason I mention this is because you can baby it and make it last.

 

RWHP? Doubtful.

 

Why? Ive seen it done before.

 

With 9psi on a stock bottom end?

 

How much boost are you running trust?

 

I make 566rwhp on a stock 98 long block, just a cam and 8-9lbs. could make more but im out of fuel and figure i am on borrowed time anyways.

 

Seven years boosted, two years on 13psi and made 612 on a stock bottom end. I drive it a few thousand miles a year, make quite a few track events, and drive it hard pretty often.

 

These threads are quite comical Always goes like this: A guy starts out asking some basic questions- most obviously the one that every forced induction noob wants to know naturally- "how much power can i make on my stock engine". And he's obviously done a bit of research to know that 8psi and 500rwhp would be a general consensus for what everyone would say is the limit.. But then, in step a couple of people who have had very unique results of 600 or even more rwhp and claim to have been doing it for a very long time. This gets the OP thinking that they can somehow repeat these freak isolated incidents and a few months later down the road we have another FI carnage thread stating that the ringland on the #7 piston broke, and then the next step questions fly on asking advise of how to build up a good forged engine and what stuff to put that will handle boost they tried to run on their stock engine but didnt work out quite so well.. Its such a vicious cycle lmao. Good luck with it all dude- whatever you decide

 

Well said ^^^ https://ls1tech.com/forums/forced-in...lity-list.html