175 HP jet size
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Joined: Feb 2003
Posts: 644
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From: Fleming Island, FL
Car: 1992 Formula 350
Engine: 5.7 L98
Transmission: 700R4
175 HP jet size
Anyone know what size jets to use for a 175 HP shot? This will be used on the TPI 5151 kit (wet). Thanks.
Joined: Feb 2000
Posts: 1,855
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From: St. Augustine, FL
Car: 89 GTA
Engine: 383
Transmission: 4L80E
Axle/Gears: 12 bolt-3.73
Re: 175 HP jet size
I'm using 73n-41f, but I have the walbro pump with hot wire kit. You'll have to tune the fuel side to taste.
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From: Cincinatti OH
Car: 1991 L03 700r4 RS
Engine: 1987 WS6 Trans AM Lb2
Transmission: Th350 red neck Performance 3k stall
Axle/Gears: 95 Mustang 8.8 built with 3.73s
Re: 175 HP jet size
TPI = 43psi fuel pressure, carb jetting = 7psi; 78/82 is a 200 shot, will be pig rich, and will probably blow up. 73/44 would be good and safe if you have a nice Walbro fuel pump.
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iTrader: (3)
Joined: Oct 2005
Posts: 1,833
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From: Cincinatti OH
Car: 1991 L03 700r4 RS
Engine: 1987 WS6 Trans AM Lb2
Transmission: Th350 red neck Performance 3k stall
Axle/Gears: 95 Mustang 8.8 built with 3.73s
Re: 175 HP jet size
You really need a bigger fuel pump in the tank on these cars if you're planning to spray. The one that came factory just can't keep up with the motor and 175 additional horsepower. Also the pumps are usually old and worn out so it's best to just do it right the first time and upgrade to the Walbro 255lph pump. If you really don't want to go pulling the tank and such you can put a Walbro inline pump inline.
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