when does the 4.8 5spd crap out?
#1
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Joined: Feb 2005
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From: belleville, il
approx wut HP/TRQ rating does the manual transmission blow up?
keep thinkin about running a custom turbo setup on my truck, i figure if STS can run 5psi non-IC i coudl run 7 psi Intercooled. than upgrade the fuel pump/injectors and run 9-10psi intercooled. im sure the bottom end can take it, dont think i'd have valve float problems if im still running the stock cam.
any one know?
keep thinkin about running a custom turbo setup on my truck, i figure if STS can run 5psi non-IC i coudl run 7 psi Intercooled. than upgrade the fuel pump/injectors and run 9-10psi intercooled. im sure the bottom end can take it, dont think i'd have valve float problems if im still running the stock cam.
any one know?
#4
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From: southern NJ
I blew up two 5 speeds with the stock 4.8. If you put a turbo on your truck, kiss the tranny ( and rear) goodbye. However, it was rather easy to convert to a 700r4 ( built VERY strong of course) and the truck is much faster with the automatic. On street tires with the 5-speed, I couldn't get out of the 15's. With the 700r4 on street tires I run consistent 13.30's.
#5
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From: From Houma La. Living n Ellisville Miss.
Originally Posted by Badzracing
I blew up two 5 speeds with the stock 4.8. If you put a turbo on your truck, kiss the tranny ( and rear) goodbye. However, it was rather easy to convert to a 700r4 ( built VERY strong of course) and the truck is much faster with the automatic. On street tires with the 5-speed, I couldn't get out of the 15's. With the 700r4 on street tires I run consistent 13.30's.
you could also go with a 6 speed out of a z28 are firebird. some one has already done this and they were very happy with the out come
#7
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From: belleville, il
i was thinkin about a 6speed from a z28, any how-to's on it? what all needs to be replaced?
maybe ill just buy a wrecked z28 or something and swap out the transmission and whatever else i need.
maybe ill just buy a wrecked z28 or something and swap out the transmission and whatever else i need.
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