semvhu
06-26-2003, 02:51 PM
I need to get more details in my sig soon so I won't have to type everything every time. :tongue: Anyway, in my recently-purchased '93 Z71, I've noticed it seems to lack on low-end torque. I notice a significant difference below 2000 RPM; I'd say it probably has only half the torque at 1000 that it does 2000, but that's just a guess and not a dynoed result. :crazy: In my '94 Corvette, I don't notice much difference between 1000 to 3000 RPM, but then again it's a 'Vette, not a '93 Chevy truck.
Whether or not the engine runs perfectly or not is a bit moot. I'd like to improve the low end torque to pull hills better in high gear and possibly improve gas mileage as well. I estimated my mileage on my first fill-up at 12 mpg. I say estimate because I had to guess a bit and add up in my mind the mileage I had since the first fill-up. I'm keeping tabs on it in an Excel spreadsheet this time and will have a much better number on next-week's fillup.
Anyway, I've read some about exhaust headers. The truck appears to have the original exhaust manifold on-board. If I could get a set of headers for a decent price and improve the mileage and low end torque, I'd be a happy man. The exhaust is a Flowmaster exhaust of some sort, I haven't bothered to try to find exact numbers on it yet. After the engine, it is a single pipe into a Flowmaster muffler that splits into a dual exhaust at the rear.
Any suggestions for a set of exhaust headers for the improvements I'm looking for? 12 mpg is pretty low, but I might could squeak another 1 mpg by easing up more on the foot; it hasn't been too heavy of a foot, but it could still be a little lighter. :D If I could get 15 mpg out of the truck by spending one or two c-notes, I'll be a happy camper. :crazy:
Whether or not the engine runs perfectly or not is a bit moot. I'd like to improve the low end torque to pull hills better in high gear and possibly improve gas mileage as well. I estimated my mileage on my first fill-up at 12 mpg. I say estimate because I had to guess a bit and add up in my mind the mileage I had since the first fill-up. I'm keeping tabs on it in an Excel spreadsheet this time and will have a much better number on next-week's fillup.
Anyway, I've read some about exhaust headers. The truck appears to have the original exhaust manifold on-board. If I could get a set of headers for a decent price and improve the mileage and low end torque, I'd be a happy man. The exhaust is a Flowmaster exhaust of some sort, I haven't bothered to try to find exact numbers on it yet. After the engine, it is a single pipe into a Flowmaster muffler that splits into a dual exhaust at the rear.
Any suggestions for a set of exhaust headers for the improvements I'm looking for? 12 mpg is pretty low, but I might could squeak another 1 mpg by easing up more on the foot; it hasn't been too heavy of a foot, but it could still be a little lighter. :D If I could get 15 mpg out of the truck by spending one or two c-notes, I'll be a happy camper. :crazy: