6.2 Gen lll
Sep 25, 2021 | 12:18 AM
#1
Thread Starter
Registered User
Joined: Sep 2021
Posts: 1
Likes: 0
6.2 Gen lll
Hi guys, a friend who sells me a 6.0 bored to 4.065 "(3 Gen) with 243 heads ported. I will put this combo on a 2003 Silverado with 5.3 RCSB (I will put all the accessories from the 5.3 to the 6.2) as you see it is an improvement somewhat cheap but I have some questions.
The goal of this project is to get you to do 12 seconds or less in 1/4 mile 1900 meters (AMSL). The truck currently has a 60e stage2, 4.10 gears with locker, stock torque converted
1- I know that I will have a lot of compression, does anyone know an approximate of it and what gasket heads should I use?
2- What camshaft and torque converter kit do you recommend?
3- Will the fuel pump and the stock injectors be enough for that 6.2s?
I'm good? Or do I withdraw from this expensive hobby lol
Any good or bad tip is welcome. Thank you!
The goal of this project is to get you to do 12 seconds or less in 1/4 mile 1900 meters (AMSL). The truck currently has a 60e stage2, 4.10 gears with locker, stock torque converted
1- I know that I will have a lot of compression, does anyone know an approximate of it and what gasket heads should I use?
2- What camshaft and torque converter kit do you recommend?
3- Will the fuel pump and the stock injectors be enough for that 6.2s?
I'm good? Or do I withdraw from this expensive hobby lol
Any good or bad tip is welcome. Thank you!
Sep 25, 2021 | 11:10 AM
#2
I can't answer the compression question but lets try the others.
How do you want the truck to drive outside of going to the track? Because you could put some monster camshaft in there with a 4,000rpm stall and it would only be good there and not on the street.
There should be several camshafts out there that are called "stage 3" or similar that will be in the 22X/22X to 22X/23X range, I would think anything in that size with the cubic inch size you have will be alright. Get a 2,800-3,000 stall converter or contact a converter company to get their opinion as well.
As far as the injectors go and fuel pump, you need to go larger. A walbro 255lph and at least something in the mid 30's for lb/hr on the flow rate for injectors. Lots of guys run the later 50 or 52lb/hr injectors from a GEN 4 6.0/6.2 truck because the data can be brought over with a spreadsheet using HP Tuners.
How do you want the truck to drive outside of going to the track? Because you could put some monster camshaft in there with a 4,000rpm stall and it would only be good there and not on the street.
There should be several camshafts out there that are called "stage 3" or similar that will be in the 22X/22X to 22X/23X range, I would think anything in that size with the cubic inch size you have will be alright. Get a 2,800-3,000 stall converter or contact a converter company to get their opinion as well.
As far as the injectors go and fuel pump, you need to go larger. A walbro 255lph and at least something in the mid 30's for lb/hr on the flow rate for injectors. Lots of guys run the later 50 or 52lb/hr injectors from a GEN 4 6.0/6.2 truck because the data can be brought over with a spreadsheet using HP Tuners.
Sep 26, 2021 | 12:28 AM
#3
and you could get a trailblazer SS intake that flows like the GenIV stuff but is made for the cathedral heads & a 90mm TB.
if you can pull or look up your engine specs, wallaceracing has great static & dynamic compression calculators that you can play around with the different cam & gasket specs to hit your target cylinder pressures.
if you can pull or look up your engine specs, wallaceracing has great static & dynamic compression calculators that you can play around with the different cam & gasket specs to hit your target cylinder pressures.
Sep 29, 2021 | 03:15 AM
#4
Teching In
Joined: Jun 2021
Posts: 21
Likes: 6
From: Durango
I can't answer the compression question but lets try the others.
How do you want the truck to drive outside of going to the track? Because you could put some monster camshaft in there with a 4,000rpm stall and it would only be good there and not on the street.
There should be several camshafts out there that are called "stage 3" or similar that will be in the 22X/22X to 22X/23X range, I would think anything in that size with the cubic inch size you have will be alright. Get a 2,800-3,000 stall converter or contact a converter company to get their opinion as well.
As far as the injectors go and fuel pump, you need to go larger. A walbro 255lph and at least something in the mid 30's for lb/hr on the flow rate for injectors. Lots of guys run the later 50 or 52lb/hr injectors from a GEN 4 6.0/6.2 truck because the data can be brought over with a spreadsheet using HP Tuners.
How do you want the truck to drive outside of going to the track? Because you could put some monster camshaft in there with a 4,000rpm stall and it would only be good there and not on the street.
There should be several camshafts out there that are called "stage 3" or similar that will be in the 22X/22X to 22X/23X range, I would think anything in that size with the cubic inch size you have will be alright. Get a 2,800-3,000 stall converter or contact a converter company to get their opinion as well.
As far as the injectors go and fuel pump, you need to go larger. A walbro 255lph and at least something in the mid 30's for lb/hr on the flow rate for injectors. Lots of guys run the later 50 or 52lb/hr injectors from a GEN 4 6.0/6.2 truck because the data can be brought over with a spreadsheet using HP Tuners.
Sep 29, 2021 | 12:53 PM
#6
100% Redneck
Joined: Mar 2005
Posts: 2,098
Likes: 1,344
From: MAGA COUNTRY
Thread
Thread Starter
Forum
Replies
Last Post