quik95lt1

iTrader: (7)

Looking for something in the 8-9 heat range but as a resistor standard (non projected tip) plug......anybody know of anything.....autolite or ngk is fine.....

I'm assuming some of the Nitrous/ forded induction guys may know..........

quik95lt1

iTrader: (7)

i switched to an autolite plug.........disregard post

defaultexistence

iTrader: (11)

yea...huh,wut?

nitrous2fast

iTrader: (2)

I don't see any reason you would need anything colder than a BR7 plug?

quik95lt1

iTrader: (7)

i roasted a set of 7's on the dyno saturday..........thats what 14.25:1 does apparently lol.......i called autolite and the first words out of the guys mouth was "wrong" ....

i set the motor up a bit different this time.......basically the same top end but I did a few things to the bottom end.......the cylinder pressures are through the roof

nitrous2fast

iTrader: (2)

I just can't see that... I run BR7's in my boosted truck running 15 lbs and a 100 shot. I have no problems with the heat range.

besides the guy at autolite isn't gonna say, "yeah, those plugs are just what you need!!" no he is gonna say you are in need of such and such plugs, which btw are autolites. Im not saying autolites are bad or anything; just saying take a brand manufacturer's advice with a grain of salt.

Wicked94Z

iTrader: (26)

why do you even ask on here?? lol you're the fastest N/A LT1 car on this board except for Ken with the red bracket car... I think?

quik95lt1

iTrader: (7)

figured somebody spraying like a 300 shot or somehting would know the part number lol........i got it handled though lol

quik95lt1

iTrader: (7)

apples to oranges dude.........trust me i read the plugs......and 4 other experienced people i know did........the plugs are just downright too hot.......theres a **** ton of cylinder pressure here.........prob just as much as your 15lbs of boost motor.....if not more

Formula383

iTrader: (8)

These should both be 8 range plugs but they are gasket style. I run the NGK 4554's on the 200 shot

NGK 4554 - R5671A-8
Autolite AR3934

fex77k

iTrader: (2)

7800+ rpms and 14+:1 is a bit more exotic. They are probably getting their *** kicked from the cylinder pressures and the definitely the rpms.

1badzee

iTrader: (12)

Hey, have you looked into the NGK TR-55's? I hear that's what everyone is using these days!

Formula383

iTrader: (8)

Well obviously everyone should just run the BR7's. I mean if it works for one guy it should work for everyone...

quik95lt1

iTrader: (7)

haha right!!!........i called autolite and the guy almost had a heart attack when i told him the application and the plug i was using......i did a compression test last night and had 275psi even with the big *** cam......so the cyl pressures are prob quite high up in the 7-8krpm range....

i got a set of ar 473's and 472's for it its like a 8 and a 9 NGK heat range im gonna start with the 9's....id rather be colder and foul them than be too hot and blow somehting up.....

1badzee

iTrader: (12)

That's usually the pattern