dannyj661

Hey guys,

First time posting a thread hopefully I'm doing it right. I have a ls1 motor I'm building and its my first LS1. going o run a single turbo set up. I have been told by a local tuner to run Denso Iridium IT27. Last Night picked up my LS6 intake and the guy said those are no good. You wanna run a normal plug. Let me know what you guys think. Looking to run max 20psi when needed but more of a fun street car.

Little specs. freshly built short block
gapped rings
tu1 turbo cam
arp studs
heads are all done and flowed
ls6 intake
single 76mm turbo.

thanks

mkvamso

iTrader: (2)

I'm using br7efs gapped fairly tight
Running up to 22-23psi

Haven't had any issues with them

SPRAYED 01

iTrader: (22)

This comes up a lot. Here is basically what you will here.

Tr6 for moderate boost levels, like 12psi and lower.

Br7efs from like 13-18psi

Br8efs for 19 and up.

I run the Br8efs at 20psi and 900whp. But I ran that plug even when I was at 650whp. Why not run a colder plug? Its safer and there are no negatives but maybe a tad worse mileage and shorter replacement intervals.

willizm

iTrader: (10)

Br7efs gapped to .023 here

dannyj661

Thanks guys for all the help. its nice to get a consistent answer.any input on injectors.

So Talk to guy last night he said run FIC 725 injectors he said he has them for $560 for the set. any thoughts

mkvamso

iTrader: (2)

I'm using fic injectors
I had them resized when I went turbo
They flowed 84lbs at 43psi
Zero complaints about them so far

Lot of people have good luck with the Siemens deka 80lb injectors
They can be had for a little over 300 bucks and will support quite a bit of power

dannyj661

Thanks... mkvamso

stevieturbo

Hit your local tuner a slap.

IT27 is equivalent of a NGK 9 heat range. Only a fool would suggest that for such a build.

Just use a 7 or thereabouts as suggested above, and unless the plugs are difficult yo access, cheapy coppers work just fine. For most part precious metal plugs are more about longevity than anything else. Any performance gains are small, and the LS has very power coils, so it makes little odds either way in terms of spark performance

ZR33

iTrader: (1)

br7efs here as well

Streetracer09

iTrader: (1)

I have ran BR7EF in my Turbo Mod Mustang at 22 psi and 670 rwhp. I bought 8Ef this time around for this car I guess just to be a little safer and have some more room with timing.