Hello all

the 6.0 is stock other than a carb intake at this moment may get a cam later.

turbo is the 7868 unit that's t4 and .96 ar

all going in a mustang coupe just wondering what power could this make

it it would be nice to make 800hp with this set up
and have instant boost and I figure 9.0 -9.20 in the 1/4 mile at race weight of around 2800lbs

 

Turbonetics 7868 on a 6.0 what to expect....Back Pressure.

In all seriousness that engine flows some air. Put a big turbine on that motor. I would not go smaller than a 75mm turbine. Personally I would use a 90+mm turbine.

 

x2 Forcefed86 has posted some backpressure numbers in his thread https://www.theturboforums.com/threads/362857-1979-RX7-LS-5-3-S400SX3-(75mm) using 83/74, and a 87/xx s400 turbines, both were over 2:1 iirc on a mildly cammed 5.3 (ls9, and now an Isky 212).

 

x3 that is a small turbine

a s475 or a s480 with the 96/88 turbine would be a good match

 

Don't count the little turbo's out, Denmah's friends foxbody ran a 9.17 with the MPT76 in 403ci. Would it run better if bigger maybe maybe not. It seems the smaller turbo equipped cars are running quicker et's in general far as street-strip cars are concerned. To me it seems everyone wants to go big but who wants lag on the street?

 

So on the other side of the coin what about the ebay gt 45 as a single with the 1.05 ar .....

see eek the real issue is I have my car set up with 2 ebay gt45s and just afraid it's going to be a total pig........

i would like like to switch it over to a single and maybe just upgrade to another single or leave it twins with the gt45s and maybe later get a better suited set of turbos if the match proves slow to boost

 

The HP range of the Turbonectics 7868 can be extended a little with a bigger turbine housing. 1.15 or bigger would help it. But, ultimatly the 68mm turbine would become a restriction on the 6.0. If your already set up for twins, people have had good results from the on3 70mm and 76mm as twins on the ls engines. The small turbines work well in a twin setup. You could reach your HP goals with that setup. If you go single, I wouldnt use anything less than a 7675.