what kind of spark plugs do you guys suggest i should get for my car 89 TBI trans am

 

Standard copper core resistor plugs of most any brand, whatever the parts store application tells you, will run as good as any other type. They just don't make that much difference, one from another.

Some may last a little longer, but you rarely get more by paying more.

 

Word is, (and I might just be spreading misinformation) that anything above a platinum plug in our cars doesn't work as well, as the Platinum +2 and +4's need a higher spark voltage (like those from distributor less ignition) or an aftermarket HEI box, if you're running the stock electrical, the NGK V-Power 6630 is an awesome plug at an awesome price. I think I bought mine at $1.99 a plug.

 

i only use $1.59 AC Delco resistor plugs. they're honestly the best for these cars.

 

I agree with the AC Delcos.