Squeezing ponies

[SouthBoston]

Alright I've got a 1992 5.7 tbi I've done:
Ultimate tbi
Tbi spacer
Open element filter
New plugs
Headers with dual exhaust
Any other things to get some more power out of the truck?

 

[92GMC]

Just a tune. From there it's time for a cam and headwork.

 

[94Sierra4x4]

In that case you might as well do cam & head work first, saves you from paying for two different tunes

 

[cviola2005]

I think it all depends on how far you want to go into it, and how much money you want to spend.
You could tear down the whole motor and take the block to a machine shop to bore it and true up the decks. Or... you could leave the block alone and take the heads in to get them shaved.
On one hand, there is block shaved and overbore, and on the other, there is head shave and valve job.

A new cam can be put in with the motor in the truck, usually with radiator, a/c condenser, and grill removed.
Barring any problems with finances and down time, I would pull the motor and go from oil pan up. Redo everything in one go.

 

[MTM1]

I suggest a tune. I just had mine done by Nelson Performance and I'm so happy with the result

 

[SouthBoston]

It's a tbi

 

[gmcyukondriver]

It's a tbi

So? Everyone has suggested things you can do with TBI. Tunes are a good idea, but like mentioned before, unless you are going to stop here, it's cheaper to do more stuff and get the tune after, rather than tune now, do more upgrades, and tune again.

Another thing you can do is upgrade the ignition (distributor, plug wires, coil).

You could also go to an e-fan setup instead of the standard clutch driven fan. Not sure if you would notice the small increase in power though.

 

[MTM1]

With Nelson all retunes are free

 

[James Hart]

With Nelson all retunes are free

Unfortunately Nelson only tunes 96 and newer trucks.

 

[eric.s.t]

TBI.... im starting not to like them. But.... ive done som research, i would start with a set of vortec heads, a cam, the tune, a good set a spark plug wires.. i forget the rest... but thats the start