htt turbo

stroke250

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Jul 1, 2008
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where can i find info on the htt promax/specs?? looking into this as my turbo choice. truck is a daily driver and tows on a rare occasion. thanks
 

TrentNell

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anyone?? what size should i be looking for??
The promax come in a few different sizes
64mm /71mm/13cm or 16 cm
66mm/71mm/13cm or 16 cm
66mm/74mm/ not shure on the a/r 's availible
70mm/71mm

I would go with either the 64 or 66 mm and the 13cm housing for a quick spool , if you plan to run big power or dual cp3's the 16cm will give better exhaust flow and maybe consider the 74mm exducer .
 
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TrentNell

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i plan on staying with a single cp3 and the 500-600hp range.

I would go the 66mm/71mm/13CM , the 64mm could hit that power too and would spool a bit faster but the 66 will have a bit more air and is the same price so might as well go bigger , and the 66 still tows great .
 

rmallen30

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Aug 12, 2009
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hillsboro ohio
still gets pretty hot w the dual cp's at the end of the 1/4 digital gauge says bout 1800 peak but how accurate that is ? nos helped out a bit water would be best though but alot is due to tire size and weight on my truck
 
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ChevyDealer

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Dec 12, 2008
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i plan on staying with a single cp3 and the 500-600hp range.

ProMax 66 in either the 16 Stainless Steel or 13 SS housing would be great. The ProMax 66 Kit part # for the 16cm housing is 2666467LB for an LB7 and for the 13cm it is 2366467LB. With a big fuel tune the 16cm SS will spool very close to stock. The 13cm SS will spool a little quicker.

This is an S300 Borg Warner based charger with HTT's custom housing and clipped wheel. It has a 66mm Compressor Wheel (66/25.4=2.6") and a 71mm Turbine. The wategate is adjustable and set at an optimal 40 psi by HTT. The kit comes with all necessary parts to make the conversion from stock including HTT's pedestal and down pipe.

Recommended supporting hardware would be Upgraded Allison and Torque Converter, Lift Pump, Intake, 4" Exhaust, and a big fuel tune.
 

stroke250

I May Be Lost...
Jul 1, 2008
490
18
18
Idaho
ProMax 66 in either the 16 Stainless Steel or 13 SS housing would be great. The ProMax 66 Kit part # for the 16cm housing is 2666467LB for an LB7 and for the 13cm it is 2366467LB. With a big fuel tune the 16cm SS will spool very close to stock. The 13cm SS will spool a little quicker.

This is an S300 Borg Warner based charger with HTT's custom housing and clipped wheel. It has a 66mm Compressor Wheel (66/25.4=2.6") and a 71mm Turbine. The wategate is adjustable and set at an optimal 40 psi by HTT. The kit comes with all necessary parts to make the conversion from stock including HTT's pedestal and down pipe.

Recommended supporting hardware would be Upgraded Allison and Torque Converter, Lift Pump, Intake, 4" Exhaust, and a big fuel tune.


i think the 13cm SS will work fine for me. thanks for the info.
 

TrentNell

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Jul 7, 2008
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im still debating over the 66 or 64 though....

NJLLY went 12.2 on his 64mm HTT , he does have injectors though .

And on my truck i only picked up an extra .1 from switching from a 64mm wheel to a 66mm wheel .
 
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TrentNell

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i do have 45over injectors too if that helps

IMOP if your going to do any drag racing or pulling i would go with the 66 , if its just for fun and D/D i would go 64mm , there is a feelable difference in spooling . The 66 still spools great but i did notice a difference when i made the move up .