looking for advice on what to upgrade? twins or tune

strongsperformance

2002 sierra cc dually
Jan 14, 2011
78
0
6
lake orion michigan
Hello
not sure where to ask this so here it is.
I have a 02 ccdually dd
I have built trans ,batmowheel ihi stocker with ppe valve and profab airhorn with s&b cai. Lbz cp3 I have dsp5 by Idaho rob.
I am very happy with how my truck Runs. But I want more. It's only runs 13's. I am thinking s475 over stock then robs tunes. Really don't want to bend my 315000 mile rods lol.
What can I do to improve it.
Thanks for any and all advise
 

Hot COCOAL

May the farce be with you
Jun 9, 2012
4,433
0
0
I'd say injectors next, then turbo or twin over stock, but you'll be getting close to gasket blowing and rod bending HP by then so you might also look into freshening up the engine with some head studs, a cylinder hone, new rings, de-lip and coat the pistons, and add a set of rods.

Too many ways to go about it to really give an Indefinite answer, my best suggestion would be to play it safe and know ALL the possibilities you'll be putting yourself into by upping the power level

Or you'll quickly find yourself needing to rebuild an engine
Ask me how I know...
 

TheBac

Why do I keep doing this?
Staff member
Apr 19, 2008
15,599
1,848
113
Mid Michigan
You could put larger injectors in it, but I think you'd start to push into "bent rod" territory if you try to add more fuel. Start saving for rods/studs if you want more power.

You have a 8500lb truck (only thing larger is a Kodiak) so maybe just be happy with 13s. If you want something faster, buy a RC/LB.
 

strongsperformance

2002 sierra cc dually
Jan 14, 2011
78
0
6
lake orion michigan
I'll take your advise and leave well enough alone. Lol
I ran out at track twice. First pass was a no boost launch.
1st pass 2.1 60 with a 14.2 1/4 @105.
2nd pass 1.87 with a 13.6 @109
Told my self because of the miles I would never run quarter again. I had 250k on it then now I am just under 315k
I don't have a slip anymore.
The whole reason for this is last night I was playing with a 2003 vet ( the guy was like wth is this dually whipping my ass from 35mph up to 100) he did not have a chance. Lol
It was the first time my brother was ever in my truck when I messed around. He said are you really pulling on this vet . It made me feel good. The vet owner stopped at my house and asked what was done. I said all bolt ons really.
Thanks again guys. I will leave the rods straight for a bit longer.