whats the best spark plugs??? and whats the best performance mods for $900???

[02gmcbandit]

well the question for my truck is whats the best spark plug to get? 02 sierra 5.3, n/a. i always thought ngk but which ones??? i'm not sure if my tuner bumped his head or what but he said the stock ones GM puts in are the best???


ok and heres the 2nd question for my cousin who just got a silverado., whats the best performance mods for $900 or under?? LT's, HSW plate kit?? what??? the truck he just got is a 01 rcsb silverado. 5.3, K&N CAI, flowmaster, 4.10's. computer tune. not sure who tuned it though. he just wants the most he can get now for the extra money he has. any suggestions???

[casey23]

v power TR6 nkg plugs... your buddy needs a big stall and a wet kit.....

[CHEVROLADE]

longtubes,magnaflow,pulley

[RedHeartbeat]

Trutrac, gears and a 2400 stall.

[beingblueeyes]

trans: Corvette Servo/Transgo HD-2
motor: LT's/ E-fan/160 or 180 thermostat
also ditch the flowmaster
he's still going to have money left over

[Duct_tape123]

Why ditch the flowmaster?

[beingblueeyes]

because they are not the master of flow <<thats fun to say(they don’t flow well at all from what I’ve and others have found and the last 2 I installed didn’t last more then 1.5 years due to rust)

[02gmcbandit]

where would i get the TR6? all jegs is pulling up is TR55,TR55IX,TR55GP, IZTR5B11

[RedHeartbeat]

I buy mine at Orielly's. Sometimes they have to get them from the warehouse but they do stock them.

[02gmcbandit]

TR6 stock no. 4177? 14 mm taper seat?