What AR to use on twin turbo 5.3?
You can't expect to get a difinitive answer without giving details on your power goals, street vs track use, vehicle weight, rpm range, etc.
I have a 408 in my '69 Nova with twin GTK-650 turbos and .68 A/R housings. Last year it put down 909 rwhp and ran 5.70s in the 1/8 mile with those .68 housings. I think at that level it could make a little more power with bigger exhaust housings. Maybe that gives you some insight as you plan your build...
I have a 408 in my '69 Nova with twin GTK-650 turbos and .68 A/R housings. Last year it put down 909 rwhp and ran 5.70s in the 1/8 mile with those .68 housings. I think at that level it could make a little more power with bigger exhaust housings. Maybe that gives you some insight as you plan your build...
Power goal isn't in mind... efficiency with being a 5.3 is... hp is just a number to as is boost. Or weight for that matter. But to be technical race weight will be between 3,295.12 to 3,296.10 depending on weather or not I drink that monster before I buckle up. But im more or less curious to what cubic inch to AR sizes people are using. As after this junk 5.3 pops ill be building a 427 lsx to throw in...
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From: ocala,fl--- forest-ocklawaha
yes i agree , the turbine size is whats more important than a/r , fast spool , id stay in the 5x mm size 54mm etc , more up top power go with low 6x mm, 62mm etc i personally wouldnt go with any turbine bigger than 64mm , im doin a ly6 , 6.0 l92 heads , i plan on around 58-62mm turbine , .68 a/r, with compressor of around same size of turbine .. my ideal turbo for my setup would be 58mm turbine .68 a/r , 60mm compressor ..
also depends on stall converter , weight ,,etc , and what your plans on,, i never like going over 2600 stall,, i like to drive my vehicles .. , so i need some fast spool, and still have up top power ,,
also depends on stall converter , weight ,,etc , and what your plans on,, i never like going over 2600 stall,, i like to drive my vehicles .. , so i need some fast spool, and still have up top power ,,
Last edited by chevellepowered; Jan 30, 2014 at 11:41 AM.
