what size turbo for twin 4.8 turbo
#1
Staging Lane
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what size turbo for twin 4.8 turbo
I've got a 2013 4.8 (L20) I am using for my twin turbo build. The L20 comes with 243 heads and has 8.8 compression ratio. I think I have decided to use the ls9 cam. This build is pure street car, 78 4dr Fairmont, TH350 (550-600 RWHP maybe). I need some help picking out proper size turbos for my twin setup.
Maybe this is a possible candidate?:
http://www.ebay.com/itm/T04E-T3-T4-6...BV3AbE&vxp=mtr
Maybe this is a possible candidate?:
http://www.ebay.com/itm/T04E-T3-T4-6...BV3AbE&vxp=mtr
#4
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I run those. Only 9 passes so far. 5.93 @ 118 mph
at 8lbs of boost.
So far so good.
Build thread
https://ls1tech.com/forums/forced-induction/1797340-i-am-having-twins.html
at 8lbs of boost.
So far so good.
Build thread
https://ls1tech.com/forums/forced-induction/1797340-i-am-having-twins.html
Last edited by T.Fiddler; 11-15-2015 at 02:12 PM.
#5
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Can always add a 3rd or 4th for that price too! Buddy picked up 3 of them to try on his 5.3.
Don't get the fellas hopes up! I doubt many would run anywhere near the same times as you in that feather weight chassis!
I run those. Only 9 passes so far. 5.93 @ 118 mph
at 8lbs of boost.
So far so good.
Build thread
https://ls1tech.com/forums/forced-in...ing-twins.html
at 8lbs of boost.
So far so good.
Build thread
https://ls1tech.com/forums/forced-in...ing-twins.html
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#8
TECH Fanatic
I have two of these on my 4.8 silverado. i havent pushed any real boost yet but they seem like theyre going to be pretty responsive once i turn up the boost controller.
with 3psi wastegates on spring pressure only it goes positive at like 2800 rpm with the stock converter. i have a 3400 converter going in and i expect its going to be instant boost with that.
http://www.ebay.com/itm/CXRacing-T4-...RS2egM&vxp=mtr
with 3psi wastegates on spring pressure only it goes positive at like 2800 rpm with the stock converter. i have a 3400 converter going in and i expect its going to be instant boost with that.
http://www.ebay.com/itm/CXRacing-T4-...RS2egM&vxp=mtr
#14
I have two of these on my 4.8 silverado. i havent pushed any real boost yet but they seem like theyre going to be pretty responsive once i turn up the boost controller.
with 3psi wastegates on spring pressure only it goes positive at like 2800 rpm with the stock converter. i have a 3400 converter going in and i expect its going to be instant boost with that.
http://www.ebay.com/itm/CXRacing-T4-...RS2egM&vxp=mtr
with 3psi wastegates on spring pressure only it goes positive at like 2800 rpm with the stock converter. i have a 3400 converter going in and i expect its going to be instant boost with that.
http://www.ebay.com/itm/CXRacing-T4-...RS2egM&vxp=mtr
I am thinking of getting these for my next build. I see they are water and oil cooled. How are you plumming the water to the turbos?
Thanks