Need ( HELP ) deciding on turbo for 402 ci
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On The Tree
Joined: Jul 2013
Posts: 114
Likes: 1
Need ( HELP ) deciding on turbo for 402 ci Always wanted to go Turbo and finally pulling the trigger. I have a 402 LS2 Base motor. 10.5 comp. Running a 239/247 113 cam. I have every bolt on already and made 502 rwhp. I'm wanting to reach 750 at the rear wheels. I'm thinking of s475 WB turbo. T6 1.32 ar. Could I reach my goals with this and how easy. I don't have E85 at that many places in Baton Rouge so just intercooler. I'm not wanting to go ***** to the wall.
I ran 10.7 at the track on motor before getting kicked off, I'm looking just to make it 9.8 or so. Please chime in and tell me what to do. I do understand a 80mm or bigger would be better but I'm only looking for 750 or so. I dont want to change cams either. So I'm thinking the s475 will give a good spool time and put me at my 750 range on pump gas. This is my first turbo build so I'm learning all the little details. Below will be my complete setup. Tell me what is the best option if I try to run a s475. Space is very limited.
LS2 Alum block / 402 ci
LS6 Stage 2.5 heads
239/247 113 cam 600 lift ( I think )
Fast 102
46 lbs Fast Injectors
Twin Walbro 255 fuel pumps with return system
Callie compstar Crank
Callies Rods
-10cc Malhe Pistons
Ported oil pump
M6 t56
PLans for S475 non race housing
Lq9 Manifolds
2.5 hotside to T6 flange
3" cold side
4" intercooler
50mm Wastegate and BOV
I ran 10.7 at the track on motor before getting kicked off, I'm looking just to make it 9.8 or so. Please chime in and tell me what to do. I do understand a 80mm or bigger would be better but I'm only looking for 750 or so. I dont want to change cams either. So I'm thinking the s475 will give a good spool time and put me at my 750 range on pump gas. This is my first turbo build so I'm learning all the little details. Below will be my complete setup. Tell me what is the best option if I try to run a s475. Space is very limited.
LS2 Alum block / 402 ci
LS6 Stage 2.5 heads
239/247 113 cam 600 lift ( I think )
Fast 102
46 lbs Fast Injectors
Twin Walbro 255 fuel pumps with return system
Callie compstar Crank
Callies Rods
-10cc Malhe Pistons
Ported oil pump
M6 t56
PLans for S475 non race housing
Lq9 Manifolds
2.5 hotside to T6 flange
3" cold side
4" intercooler
50mm Wastegate and BOV
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From: Old Bridge, NJ/Corpus Christi, TX
You may want to back off on the compression a little to be on the safe side. Also those injectors need to go and if I were you I wouldnt run the fast intake. Seen a few crack with turbo motors. As far as a turbo a billet wheel s480 from Forced Inductions would be a nice street friendly turbo for you...
