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Unread 08-29-2011, 06:08 PM   #1
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Default Just bought a new truck

I just bought a black 1999 Chevrolet Silverado short box with the 5.7 vortec in it. any easy upgrades i can do to add some horses to it? Will post pictures when i get my camera working again.
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Unread 08-29-2011, 06:39 PM   #2
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Exhaust is probably the easiest. Go with a set of aftermarket headers and at least a 2.5 inch mandrel bent exhaust.

Don't go with crimp bent exhaust as it really only flows as well as it's most restrictive part, in some cases necking down to as low as 1.6'' on a 45 deg. bend .

Besides that you have yourself a very reliable, tough-as-nails motor. Take good care of it and it will likely outlast the truck it's installed in.
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Unread 08-29-2011, 07:02 PM   #3
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Thanks exhaust was gonna be the first thing. What brand of headers would you go for?
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Unread 08-29-2011, 07:14 PM   #4
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I personally would probably go for either a used name brand set or the cheapest set available on suimmitracing or jegs.

Just a quick google search will tell you more info than I know about your particular truck year and the options available.
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Unread 08-29-2011, 07:17 PM   #5
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Thank you Speed demon
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Unread 08-29-2011, 07:53 PM   #6
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There's no shortage of information or parts available for those trucks. A tune will wake it up a lot though.

Pics of the truck!!
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Unread 08-29-2011, 09:25 PM   #7
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Pics of the truck needed!

Im sure you can find a large selection of headers on summitracing, and any good aftermarket stainless exhaust will be great. Both might yield another 30-60hp. Im not too familiar with that motor.

If there are any tuners for the truck that will allow a custom tune, not just a drop in modded chip, that will be the best investment your money can get. It will allow a separate tune for performance, fuel economy, towing. And typically will allow you to change tune maps on the fly, and allow you t tune and take real advantage of any mods.
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Unread 08-29-2011, 09:59 PM   #8
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Blackbear Performance does EFILive tuning for your truck. Basically they send you a bit to plug into your OBDII port, drive around for a week or so, then send it and your PCM back to them and they'll tune it to fit your driving style. Their tunes are excellent, you'll gain mileage and power.

Alternatively, i've heard good things about PCMForLess too.
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Unread 08-29-2011, 10:28 PM   #9
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No clue what the tuning is really about
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Unread 08-29-2011, 10:30 PM   #10
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Quote:
Originally Posted by wierdo124 View Post
Blackbear Performance does EFILive tuning for your truck. Basically they send you a bit to plug into your OBDII port, drive around for a week or so, then send it and your PCM back to them and they'll tune it to fit your driving style. Their tunes are excellent, you'll gain mileage and power.

Alternatively, i've heard good things about PCMForLess too.
Blackbear is the best because they do a truely tailored tune. My roomate had one done to his 98 silvy. He had it tuned for premium fuel, had torque management turned off and the speed limiter removed. It was a completely different truck afterwards.
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