SLID

I am running a 408 with a F1R procharger with 20lbs of boost, 116 octane fuel, autolite ar123 plugs, what should I set the gap on the plugs.

CALL911

iTrader: (17)

Anything at or below .032 and you should be fine.

JPH

iTrader: (2)

Shawn @ VA Speed

iTrader: (3)

dont be afraid to tighten them up to .025,you wont lose any power by making them tighter,i run mine at .016

gametech

iTrader: (1)

Even at the 35#'s of boost in your sig, did you really need to tighten the gap THAT much to keep from blowing out spark?

Websy21

iTrader: (34)

I ain't going to tell him he's wrong looking at his sig, lol, but half the gap of the norm seems extreme but what do I know I was going to run mine at .032 unless someone tells me otherwise.

red beast

I run tr-6s and I have mine at .030.....good luck.....

Shawn @ VA Speed

iTrader: (3)

So you know exactly whats in my engine-dont know how you can tell me that i dont need that gap when you dont know what i have,i run way more than 35 psi at the track-thats just what i run it to on the dyno+i have a bunch of compression
all i was saying is the tighter gap wont hurt

CALL911

iTrader: (17)

Is there a point at which the gap is too small?

HydroStream6

iTrader: (16)

I run "TR7"s at .025"

gametech

iTrader: (1)

I was asking a question out of curiosity, NOT making a statement about your engine combo. Don't be so defensive when no one is attacking. Sorry if my post sounded like something other than a legit question.

Shawn @ VA Speed

iTrader: (3)

sorry about that,i did misread what you wrote,i've been sick too-makes me bitchy-sorry again

forcd ind

iTrader: (7)

since were on plugs, i would like to get a starting plug for my setup-after 40 years of s/b's, b/b's i am in future shock with a gen 3-lol
i have a 6.0 lq4, 9.2 wiseco pistons, using the stock tweaked 317 heads, z06 cam, carb'ed blowthru with a disc, prob around 10 lbs boost, vette setup with 8 rib, in a 69 chevelle
i would like to run an autolite, just need a good starting heat range-the plugs look diff that earlier gen 1's, so i guess its like everything else there a whole new ballgame also-thanks
i know my combo leaves some power on the table, but once i am up and running, then i will make changes-trying to build the car and the engine kills a lot of time (and yes i have a lot of experience with blowthrus and carbs)

rubbersidedown

we run .017 to .025 over 20 psi to make sure they light...