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Need some help picking my wastegate size

Old 01-29-2014, 09:43 PM
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Default Need some help picking my wastegate size

Im planning a mid mount build and need some help from anyone with experience on this. Ive seen anywhere from 38mm all the way up to 60mm.

what I have now:

07 tbss 2wd daily drive
iron 6.2 L99 pistons
stock 243 heads 64.5cc
226/236 .585/.580 114
circle d 3200
factory 4.10 soon to be 3.42 or 3.73 (cant decide)and 4l80e
stock 20 inch wheels

plans:

mid mount 76mm .96 8-10 pounds no more for now
pump gas and meth
50mm bov
stock y pipe wrapped and cats removed
intercooler piping 2.5" from turbo to intercooler. 3-4" from i.c. to throttle body
80lb inj
walboro 450 pump
I would like to be around 600whp. If I make that ill be happy.
Old 01-29-2014, 10:10 PM
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A 38mm gate will get it done but placement will be more important than with larger gates. There is no downside to a bigger gate other than cost.
Old 01-30-2014, 07:06 AM
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Originally Posted by blkbird2kta
Im planning a mid mount build and need some help from anyone with experience on this. Ive seen anywhere from 38mm all the way up to 60mm.

what I have now:

07 tbss 2wd daily drive
iron 6.2 L99 pistons
stock 243 heads 64.5cc
226/236 .585/.580 114
circle d 3200
factory 4.10 soon to be 3.42 or 3.73 (cant decide)and 4l80e
stock 20 inch wheels

plans:

mid mount 76mm .96 8-10 pounds no more for now
pump gas and meth
50mm bov
stock y pipe wrapped and cats removed
intercooler piping 2.5" from turbo to intercooler. 3-4" from i.c. to throttle body
80lb inj
walboro 450 pump
I would like to be around 600whp. If I make that ill be happy.
600 hp, you wont be happy at 5000lbs. hell i'm not happy with 800rwhp with my turbo tbss.
Old 01-30-2014, 07:04 PM
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I know i won't be completely happy at 600 but it will keep me content for a little while. I dont plan to go to far with the ss. If i need to go faster ill buy another f body and build it. Just trying to get everything lined out before I start buying parts and tearing apart the truck.


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