what pulley to get?
12-18-2006, 12:17 PM
#1
TECH Resident
Thread Starter
iTrader: (36)
Join Date: Feb 2005
Location: Texarkana, AR
Posts: 761
Likes: 0
Received 0 Likes
on
0 Posts
what pulley to get?
well ive got a 2.9 on the way, but i was just wondering what some of you thought on what size i should get that will get me 10#s or so. all mods are in sig. also with 10#s what are some guestimates on hp and tq. i will not have meth at this time but may add it later. it will be a dyno tuned intercooled radix. thanks
12-19-2006, 11:33 AM
#3
TECH Fanatic
iTrader: (1)
Join Date: Dec 2003
Location: Halifax, Nova Scotia
Posts: 1,708
Likes: 0
Received 0 Likes
on
0 Posts
5.3 or 6.0...i get a full 9psi at wot on my 5.3 with the stock 3.4 pulley.
i think 2.9 is a bit much for a 5.3, but i'm no expert, it may be ok with a dyno tune.
lots of oodies on your truck, should make lots of power, close to 500 rwhp?
i think 2.9 is a bit much for a 5.3, but i'm no expert, it may be ok with a dyno tune.
lots of oodies on your truck, should make lots of power, close to 500 rwhp?
12-19-2006, 01:42 PM
#6
Originally Posted by j's01silverado
Wow, I wish I could hit. That mines hits about 8.5psi and falls off in the upper rpm's. Does yours?
Trending Topics
12-20-2006, 10:25 AM
#8
TECH Resident
Thread Starter
iTrader: (36)
Join Date: Feb 2005
Location: Texarkana, AR
Posts: 761
Likes: 0
Received 0 Likes
on
0 Posts
well ive got a 2.9 and a 2.7 on the way just in case. i would like to make around 11.5psi and then if it drops off because of belt slippage or the cam maybe itll maintain 10psi. when this was discussed a while back i was being told that it would have to be at least a 2.9 but probably a 2.75? i dont know though. will this much boost be safe for the motor with a good tune? and how much power will it make at that level?
12-21-2006, 08:49 PM
#10
Is this a 5.3 or 6.0? I had a 2.75 on my 5.3 for a while last summer. It's Ok as long as you are tuned for it and can provide adequate fuel. Might want a little meth in the mix if you're going to be running it hard. Could be pushing it if you plan to keep the 2.75 on a 5.3 long term. You get into boost a lot easier. Your IATs also climb faster and higher. A 2.75 is good for 12-13psi on my 5.3 in warm weather.
For daily use with a good tune and good fuel supply, I would say the 2.9(or larger) if on a 5.3, the 2.9 or 2.75 if on a 6.0. Any of these will put you over 10 psi. Obviously the larger the pulley/less boost, the safer it will be. Depends on what risk/performance balance you are willing to accept.
Your trans might not be too happy though if it only has a shift kit and servos.
For daily use with a good tune and good fuel supply, I would say the 2.9(or larger) if on a 5.3, the 2.9 or 2.75 if on a 6.0. Any of these will put you over 10 psi. Obviously the larger the pulley/less boost, the safer it will be. Depends on what risk/performance balance you are willing to accept.
Your trans might not be too happy though if it only has a shift kit and servos.