top speeds?

[cool hand luke]

Hello all, I'm currently building a car that I hope to run in ST eventually, my one downfall I see is a low top end. How fast do these cars get going on the straights at various courses? My problem is I have little tires and only 4 gears, and I'd like to keep it relatively streetable with a decent 1st gear ratio.

[obzezzed350]

What kind of car? I dont think you will find many SU streetable cars lol

[cool hand luke]

1967 fiat 850

 

Nothing fiat left except the steering wheel though. Will have a twin turbo subaru motor with around 300 hp, should weigh in at around 1350 lbs. Before the engine swap it was an SCCA racer. That's one of my concerns, if I follow the rules right the hp to weight ratio shoves me far into ST.

[Vettedoctor]

Depends on the track, what region are you running in?

 

Mid-Ohio SU cars would probably see high 140s low 150s

 

At Miller or Road America you would probably see 160+

[erioshi]

1967 fiat 850

 

Nothing fiat left except the steering wheel though. Will have a twin turbo subaru motor with around 300 hp, should weigh in at around 1350 lbs. Before the engine swap it was an SCCA racer. That's one of my concerns, if I follow the rules right the hp to weight ratio shoves me far into ST.

It looks like there's a very good chance you'd head straight to SU with those numbers. I suppose you could send an email to Greg and see what happens.

[Scott Howard]

you can probably fit into ST1 if the weight is without driver and your HP target is at the wheels. Need variables such as tire size and DOT or non-DOT. ST1 can achieve the high speeds like SU though.

[Blackbird222]

You should probably look into getting a different trans if the option exists (from packaging, availability and cost standpoints).

 

Moti