hello i'm new here but i got a question. i may buy a 3.1 from a firebird for my s-10. does anyone know what a 2.8 TBI makes for HP and torque? and the same for the 3.1L? the 3.1 is MPFI. i want to see how much power i will be getting by just buying the motor. and if anyone has any good power upgrades that i can do on a 3.1L? if i buy the motor i'll put a towing cam in, i may get 1.6:1 roller rockers, and headers. that's what i got planed help would be great. and if any of those mod won't work together tell me.

 

3.1 mpfi is rated at 140hp and 190 ft/lbs torque........

 

thanks!

now if anyone knows the specs. on the 2.8TBI. i know the carb 2.8 were like 110 hp and 140 ft/lbs of torque. but if it didn't change when they became TBI. well then swaping in a 3.1 would yeild a 30hp and 50ft/lbs of torque boost in power! man this is getting better and better!

 

actually the 3.1 has 180ft/lbs

 

still better than 140ft/lbs. i'm looking to make my truck move a little faster but not so fast that i get more tickets.

 

The torque ratings for the 3.1...at least on this site's diagram, vary between 90-92. 90 and 92 it lists it at 180 ft/lbs, however it says 185 ft/lbs for 1991. Unless they updated it without my noticing.

I imagine the 2.8 TBI would have power ratings right close to the carb...maybe 5 hp more, not sure.. But the 3.1 would be a definite improvement.

Hard to say what to do to it performance-wise...seeing as you're in an odd situation. Catback exhaust would help....doubt any of the 82-92 F-Body catbacks would work with your hanger locations, etc...try to find a catback for a V6 S-10...any 2.8 catback, no matter the fuel delivery system, SHOULD work.

Roller rockers and a cam would definitely help if you want to put that kind of money into it... I wonder if a pair of 3.4 liter headers would clear your engine bay?? Because they WILL mate to the engine, but us F-Body guys can't use them because they hit the firewall.

 

Don't they make headers for the 2.8L engines in the S-10 trucks. I thought that I read that somewhere.

 

I swear I've heard that before too now that I think about it.... Maybe they do.....

 

edelbrock makes them i looked into it. will 2.8 headers fit a 3.1?

 

Yep.

 

this keeps getting better and better!:lala:

 

 

well grim news i may not get the motor. it's up in the air. i sold a console on ebay and well either the guy died or has left the country. and that's the problem no money no motor. he has had like almost a month to pay and hasn't i informed e-bay and still no money. only thing i can do is save and fix cars so help pay. help anyone. i do take donations .

 

But to make the headers fit you will have to get a custom y pipe made.