redc4

iTrader: (2)

I am trying to decide on a turbo for a street oriented 383 setup. Space is definitely an issue on this one, otherwise I would just use a PT88. Looking for 700-800rwhp. Max downpipe size I can fit will be 3.5"

Just wondering how close the TC78 will be to the Precision 78. Any ideas guys?

hellbents10

iTrader: (10)

It will fall behind the Precision unit as far as hp is concerned for sure but the TC78 with a bigger exhaust housing could make 700whp with out too much trouble even with the 3.5" down pipe. that would be on a auto I am sure 800 would be easy to achieve on a manual.

redc4

iTrader: (2)

Thanks. It will be a 6speed car. How big of a housing can you get for the TC78?

hellbents10

iTrader: (10)

You can get the hp78 wheel in the standard housing or the GTM (race housing). TC is the small 60- style. Exhaust housings go up to 1.52.

DrTurbo

iTrader: (3)

Correct, we get them in twin scroll 1.52A/R. The GTM race cover makes a nice difference as well.

redc4

iTrader: (2)

Dr. Turbo, I sent you a PM about this setup yesterday. Which turbo would you recommend?

DrTurbo

iTrader: (3)

Well depends on what's more important to you. The TC78 and the 78GTS will make 700+rwhp with the tranny you have. So if you want quicker spool then the TC78, if you want most power then the 78GTS. Its a tradeoff...... we carry both either way and both have been great to us.

redc4

iTrader: (2)

Dr. Turbo....Sent you a PM for pricing. Let me know.

SuperZ

iTrader: (2)

Do the TC!!

DrTurbo

iTrader: (3)

Or the TC with the GTM race compressor housing is nice also....

98turbls1

iTrader: (17)

How much would that be??

DrTurbo

iTrader: (3)

Last I checked around 499 to upgrade. Alot of parts are changed over.

extremetoy

iTrader: (17)

whats the difference, would it hurt spool times?

DrTurbo

iTrader: (3)

Spool times are only effected by maybe 100-200rpms that is all. HP increase varies depending on the setup.....but ~100 hp.