LT1-LT4 Modifications 1993-97 Gen II Small Block V8

New 97 z28, needs help.

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Old Feb 22, 2010 | 06:35 PM
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scw5150's Avatar
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Default New 97 z28, needs help.

Alright, so I picked up this 30th anniversery z28 for 5k, 70,000 on it. The guy who had it before did a little work on it, as follows:

Professionally ported and builts heads with ARP's, oversized valves, 1.6RR, Rocker Studs, and triple valve springs.

Ported intake

Big, nice sounding cam-GM847 (234@.539/ 242@.558 (1.5RR)----112 LSA)

Double Roller Timing Chain

Delteq ignition (No more opti problems!)

CSI Electric Waterpump

Walboro 255 Fuel Pump

Extra Set of 30lb/hr injectors

10.5" Midwest 3400 Stall Converter

"racing tranny" build to withstand about 700hp

Aftermarket Transmission Cooler--New in Box

Hooker Longtube Headers and SLP Loudmouth CatBack

Factory SS Hood.

3.73 rear end gears.

All I know so far is the intake is knn and it has hooker headers. The jackass who had it last took off the cat and mufflers and put a glasspack on it so I'm almost afraid to drive it around the city because of noise ordnance, so I need a few suggestions for a decent set of mufflers and cat. It looks like the car isn't traditional dual exhaust, its a straight pipe that splits halfway through.

I'd like suggestions to get the most I can out of this car. I have no idea what its running right now, I'm guessing arond 400hp. Any suggestions to bring that up and quiet it down are appreciated, I don't really have a budget.

It's an automatic, I'd like to convert it to 6 speed manual, and I'm just curious about how hard an ls1 swap would be for this car.

Ideas, thoughts, suggestions all appreciated.
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Old Feb 22, 2010 | 06:46 PM
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GREGG 97Z's Avatar
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To quiet it down get a Borla with a dmh electric blockoff plate. One of the best mods I ever did. You can adjust it remotely from all muffler to wide open in seconds.
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Old Feb 22, 2010 | 07:10 PM
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I have a Bassani true-dual exhaust set-up that I'm selling. Let me know if you're interested.
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