ramcer

So about 6 months ago I bought my very first trans am ever. The only thing I've had before this was a Toyota. I bought it with SLP long tube headers and lid, which the headers go straight back with a 3 inch pipe into flomasters. It's an automatic, has a cam upgrade. I wanted to get some suggestions on what modifications you guys suggest for me to do? I want a good, fast and strong take off without any hesitation. Let me here the suggestions.

myk

iTrader: (4)

First, try and be more specific about your goals. After all, a properly maintained '98 T/A should take off fast, strong and with no hesitation with no 'mods at all. Are you looking to break into the 12 second 1/4? Looking to take on road courses? Both? I would perform basic maintenance just to make sure you have a solid platform to start experimenting with. Then, once you're sure the car is in good health, try taking it to a track where you can see what you and the car can do together. Once you get the results then you'll have a better idea of what you need to do to the car...

baalic

iTrader: (8)

+1 with myk

jc98ss

iTrader: (13)

+2 with myk......i'm not an automatic guy, but it seems a stall + 3:73 gears might be in your future....3600rpm stall is popular....also, if your budget allows, a good set of heads....ported ls6 and 5.3's seem to make good HP #'s.......i hear flowmasters kill our cars....there are lots of better muffler options out there

ramcer

I do have another question, I am about to change my spark plugs. What are the best plugs to use?

ramcer

what mufflers do you suggest?

jc98ss

iTrader: (13)

i've heard to stay away from bosche....ac delco's is what i went with....lots of folks like NGK's

jc98ss

iTrader: (13)

it depends on how loud you want your car to be.....SLP loudmouth's are raspy, almost like having no mufflers at all......magnaflow is very tame and deep until you punch it, then they really open up....of course i'm partial to sweet thunders in a true dual setup, they're kind of in the middle

topspeed7

iTrader: (1)

my first order of business would be to convert the ecu to a 99 later, i did a big cam, ported heads the works, after i was done i wanted a sd tune and the 98 would not support it, its also limited to boost

tording99Z28

iTrader: (3)

For plugs I would go with NGK TR55's. As everyone else mentioned just do basic maintenance first to make sure its in tip top shape and go from there.

WS6SP33D

iTrader: (2)

def upgrade ecu, NGK tr55 plugs, then 3600 stall, try that before gears. then ls6 intake and a cam. and upgrade heads. congrats on the purchase.

ramcer

Sweet, thanks guys for the help. Now I have an idea of where to begin.

RPM WS6

iTrader: (3)

I disagree. This would be a waste unless you plan to build a very serious engine that needs very indepth tuning. For mild-to-moderate cam or heads/cam setup, I would keep the stock PCM and just go to a good dyno tuner. Lots of people make good power on the stock '98 PCM.

The OP says he already has LT headers and a cam, so the car should be pretty strong as-is, unless something needs repair or it hasn't been tuned. If it doesn't have a stall, I would start with that (3500+, IMO).

LS1WS6dreamer

iTrader: (1)

Whats the deal with upgrading the ECU. I know that the 98's are different than 99-02, but whats bad about the 98.