Lets hear opinions... KB + 6LB lower =

[GoldLS1]

stock block... 6 lower stock upper... lil KB... full exhaust = faster or BOOM!! I have the supporting stuff also.

My heap is slow, trying to figure out if I should go the cheap route and pulley it some more. Also the avg gain is 20hp/30tq correct??

[Sixpipes]

Depending on the size of the upper, it could be dangerous. :cool:

[slick-svt]

Do it, I am about to order a 6lb lower with the stock upper. If it breaks build it faster:D

[BC Lightning]

Adam was running a 6# lower with his KB, not sure what size upper on his stock block

[StormShadow]

3.00 upper

[L-Fever]

You could always add a little nitrous to cool things down a bit! :evil

[tiffo60]

it will be fine, im running a 5# with a 3in upper and im safe, you will be safe, just keep an eye on the air to fuel and an ear out for detonation:tu:

[GoldLS1]

stock block... 6 lower stock upper... lil KB... full exhaust = faster or BOOM!! I have the supporting stuff also.

My heap is slow, trying to figure out if I should go the cheap route and pulley it some more. Also the avg gain is 20hp/30tq correct??

Check original post for upper size... 2.5!! 3.0 really.

I think some of you just want to see carnage pics :D.

Anyone chime in on how much gain (roughly) itll net??

[tiffo60]

Check original post for upper size... 2.5!! 3.0 really.

I think some of you just want to see carnage pics :D.

Anyone chime in on how much gain (roughly) itll net??

do you have a JLP Plenum?

[wesman]

Depending on your tune.....could go boom. If you're big on freeway runs or romping it on the streets you could be in trouble.

Mine went boom on a highway run with about 15psi on the stock block.

--wes

[GoldLS1]

I do have the JLP plenum...

I do highway runs, shutting down at 110-115 (before the shift!!). I wouldn't say Im hard on it, but I do drive it. Ahhhhh decisions, decisions.

[TXLIGHTNING]

I do have the JLP plenum...

I do highway runs, shutting down at 110-115 (before the shift!!). I wouldn't say Im hard on it, but I do drive it. Ahhhhh decisions, decisions. How much boost are you making now?

[tiffo60]

i would run the 6# in the summer time and switch back to the 4# in the winter months

[Andre]

I would love to go with a Kenne Belle but my tuner does not allow it for the Autobahn rides with the stock block.

And i trust in Rick of Amazon.

The boost is ok, but it would come to quick. This would be the cause of following problems for me....

I will have to stay with my 4# lower and safe tune to enjoy the rides in all situations.

3 times knock on wood......

André

[GoldLS1]

How much boost are you making now?

Solid 15....

[BlackLight]

Well, I got the 2.3 KB with the JLP plenum on a couple days ago, I've got a 6# lower and a 3.75" upper and it runs like a dream, got a nice temp. Tune by Terry till I can get my FPs and wideband on.

[WA 2 FST]

Solid 15....

15 on the street with pump gas is plenty. I wouldn't push it more than this. What is another 20rwhp going to do for you on the street anyway? I'm being serious here. Put the 6# on at the track, run some 105 unleaded and you'll see the gains where you really could use it...at the track.

Too many variables (engine coolant temp, air charge temp, engine/trans load) on the street for me to feel good about a stock block with more than ~465-475rwhp from 15+psi.

Just my $.02

[slick-svt]

Have any of yall ran the stock plugs with 5 or 6 lb pulleys, I now you should switch out to the tr6.

[STooPiD]

What's the saying? Blow it up, won't knock her up...? Wait that was something else.

I say put the 6# on. If you send pieces of the engine through the hood, you can scrap it and drive a nice kia while you rebuild your engine.

[L8 APEX]

Well, I got the 2.3 KB with the JLP plenum on a couple days ago, I've got a 6# lower and a 3.75" upper and it runs like a dream, got a nice temp. Tune by Terry till I can get my FPs and wideband on.
That is more like a 3.25:tex

[Ohmsby]

I have a 2.5 you can borrow..... and for what it's worth I agree with Wes whats the xtra 20 hp on the street buying you:tex

[TXLIGHTNING]

Well, I got the 2.3 KB with the JLP plenum on a couple days ago, I've got a 6# lower and a 3.25" upper Would this be the same a me running my 3.00 upper and a 4# lower?

[GoldLS1]

Would this be the same a me running my 3.00 upper and a 4# lower?

Pretty damn close. I believe the 3U 4L makes more than 3.25U 6L. Maybe some math whiz will chime in... but I think its within half a lb differ.



Preciate the input from everyone. I think Ill take the advice and use the 6 for the track. I guess Im getting greedy wanting to go faster. :burnout:

[BC Lightning]

Pretty damn close. I believe the 3U 4L makes more than 3.25U 6L. Maybe some math whiz will chime in... but I think its within half a lb differ.



Preciate the input from everyone. I think Ill take the advice and use the 6 for the track. I guess Im getting greedy wanting to go faster. :burnout:

I always like running a big lower and big upper

less chance for belt slip if you go with a bigger lower than if you go with a smaller upper

with my 8# lower and 3.50 upper I'm making around 16#'s, but I have a 2.6 KB


At the track I plan on running a 10# lower and 3.00 upper, but this is with 116 octane and my new fuel system and 75# injectors

[TXLIGHTNING]

with my 8# lower and 3.50 upper I'm making around 16#'s, but I have a 2.6 KB


At the track I plan on running a 10# lower and 3.00 upper, but this is with 116 octane and my new fuel system and 75# injectors[/quote] Whats that like 20lbs of boost, wow I bet that thing hauls ass! :beer: