How much HP do you think my truck has?

[jdiaz]

1993 GMC Yukon GT

So I just go this truck and stock it pulls 210hp and 300trq. Sadly it is automatic, . But it is still a cool truck in my opinion, no matter how bad it is beat up.

So to the point. I was searching online for the specs on my truck and I saw how much HP and TRQ it pulls stock. Now I am wondering how much it can pull since it has headers, a Flowmaster 40, edelbrock performance tbi intake manifold, a bypass AC pulley. I would love to find out on a dyno but I dont know anyone with one or what shops would let me use it.

What do you guys think. Maybe like 5-10 HP gain or ???

I am kind of a newbie so yeah.

 

[foreverfalcon40]

If you break 250 I would be surprised!

Get a tune!

Welcome to the boards!

 

[Monstar_est87]

Ur better off either swapping to a vortec motor or atleast vortec heads... Or best results LS 5.3/ 6.0 swap... stock 300 hp a few bolt ons 400 hp isnt crazy...

 

[Gzes]

Old tbi don't have tune option I think. I've looked for tunes but no luck..I'd drop nos if I were u

 

[AtomicHoe094]

not much gains on those mods, but better then nothing.
OBD1s (tbi) can get tuned, but in reality you get a chip burnt for your truck.. Finding someone whos good at it is near impossible unless you do it yourself..


Do some TB mods (porting and shaving), cai, supercharger..

 

[jdiaz]

Well I just got the truck and everything inside of it is about 3-5 years old and not planing on adding a new engine. I will after I fix all the cosmetic issues with it.

 

[retorq]

Better heads, TBI, chip, real exhaust, cam, std bolt ones really and you'll hit the 300 mark easily.

 

[AtomicHoe094]

Retorq knows whats up.. the only TBI believer on the site haha

 

[purple 'hoe]

Remember, unless your motors rebuilt some what recent, you also have naturally lost horsepower due to high miles and age (and if regular maintenance was never done)

There are "tunes" for the OBD1 trucks (PCM4Less) but they are chips. You can reach the 300-400 range in the TBI/OBD1 trucks, but it's not as easy as the 4.8/5.3/6.0 motors. Also, the 6.0's are a good motor for boost. They respond to boost (turbocharged to be specific) well and are good motors for them.

You'll really need a rebuild/build up to hit 300hp on a TBI truck. I'll need some minor bolt on's and a good tune to hit 300 rear wheel horsepower

 

[AtomicHoe094]

you can deff reach 3 to 400, but with lots of work and tuning! not really worth it by the time you spend all that money trying to get a TBI to run good, you can hit up the junkyard for a 5.3 for a fractionnn of the cost of getting a tbi to run good.