Boost my 14 GMC
Jul 22, 2016 | 08:52 PM
#182
TECH Regular
iTrader: (3)
Joined: Nov 2005
Posts: 485
Likes: 0
From: Tinker till it blows, then back it off a notch, maybe!!
Finally looked at my reservoir pump and its not the new one...bummer.
Corey I thought the HPFP was the same on the 6.2 and 5.3 just not same as the LT4. Also gotta remove the blower and manifold I guess to replace it? Think Id rather kill myself!!! LT4 injectors would be an easy upgrade though along with a pulley
I'm leaning towards that route, unless I'm just not thinking straight from the damn heat! Thoughts?
Man its freaking great to see some 2.9's on here now!
Corey I thought the HPFP was the same on the 6.2 and 5.3 just not same as the LT4. Also gotta remove the blower and manifold I guess to replace it? Think Id rather kill myself!!! LT4 injectors would be an easy upgrade though along with a pulley
I'm leaning towards that route, unless I'm just not thinking straight from the damn heat! Thoughts?Man its freaking great to see some 2.9's on here now!
Sidenote: A fella on HPT forum gave me the stock whipple tune and a supposedly tweaked tune with 3.875orsmaller sc pulley??
My son's tuner kit came with parts for a 6.2, so we got a throttle body from a
6.2L (91mm vs 80mm) and a 3 bar map sensor breakout harness
Anyhow the whipple tune guy told me that whipple left a lot on the table with their supplied tune.
My project starts at the end of the month, so I'll get back with some results if we don't blow it up...lol
Rumor has it that a stock 5.3L should be good for 550-600 rwhp on the stock fuel system....will see....
Jul 22, 2016 | 08:55 PM
#183
I would like to see some logged IAT's with the old and new I/C pumps. Heat soak on air/water systems was a big issue many years ago on a lot of cars.
Sidenote: A fella on HPT forum gave me the stock whipple tune and a supposedly tweaked tune with 3.875orsmaller sc pulley??
My son's tuner kit came with parts for a 6.2, so we got a throttle body from a
6.2L (91mm vs 80mm) and a 3 bar map sensor breakout harness
Anyhow the whipple tune guy told me that whipple left a lot on the table with their supplied tune.
My project starts at the end of the month, so I'll get back with some results if we don't blow it up...lol
Rumor has it that a stock 5.3L should be good for 550-600 rwhp on the stock fuel system....will see....
Sidenote: A fella on HPT forum gave me the stock whipple tune and a supposedly tweaked tune with 3.875orsmaller sc pulley??
My son's tuner kit came with parts for a 6.2, so we got a throttle body from a
6.2L (91mm vs 80mm) and a 3 bar map sensor breakout harness
Anyhow the whipple tune guy told me that whipple left a lot on the table with their supplied tune.
My project starts at the end of the month, so I'll get back with some results if we don't blow it up...lol
Rumor has it that a stock 5.3L should be good for 550-600 rwhp on the stock fuel system....will see....
Aug 21, 2016 | 11:51 AM
#189
Thread Starter
TECH Junkie
Joined: Jan 2007
Posts: 3,309
Likes: 265
From: Arlington, TX
I hear ya on that one! I can remember details from 40-50 yrs ago and not remember if I ate lunch later in the day! Still gonna be a bit longer for me but I'm really glad to see you doing this. Do you think the pump will keep up ok? What did all that stuff cost you in parts? Really appreciate you sharing!
Aug 21, 2016 | 12:03 PM
#190
TECH Regular
iTrader: (3)
Joined: Nov 2005
Posts: 485
Likes: 0
From: Tinker till it blows, then back it off a notch, maybe!!
I hear ya on that one! I can remember details from 40-50 yrs ago and not remember if I ate lunch later in the day! Still gonna be a bit longer for me but I'm really glad to see you doing this. Do you think the pump will keep up ok? What did all that stuff cost you in parts? Really appreciate you sharing!
Look up KB's build, for p/n's and where to buy.
In that the whipple tune cam with max hpfp pressure set to 30 MPA, and I am now down to oem (21.5 mpa) I think it will hang in. If I had the lash cap, I might have done that as well. for my power goals, I hope I will be fine.
toughest part of the job is getting the balancer bolt off. Home depot air compressor with 4cfm at 90 psi, 700+ ft. lbs torque impact gun and 3/8" air hose with no fittings finally did the job
