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Goertz · 01-29-2017, 03:17 PM

I'll say with the stock cam (and I've noticed this on blower cars as well) that trq drops off hard right at 5500rpm, this ends up with a dyno that virtually always has hp and trq being relatively equal to each other. With the right cam this top end will pickup dramatically.

My engine has been 100% bone stock.

When car goes back together though we will have new fueling system and at bare minumum some pistons and rods in there so that we can push the envelope and max out this turbo. The S475 is rated at 105lb of air or 1050hp so figure with powertrain loss around 850whp capable.

As I have talked to other people is lag is more of a concern and you want a killer road course/street car then I would suggest going to a Borg Warner T4 1.0ar S366. This turbo is rated at 800-850hp so with powertrain loss it would be able to make around 700whp at tip tops. This is right on the ragged edge of what stock engine internals can handle and it is also more than stock fueling can handle (however lt4 pump/injectors and zl1 lift pump can put out 700whp of e85 as Jannetty has proven http://www.camaro6.com/forums/showthread.php?t=481614 ) or you could look into our alternative fueling approach that is soon to come.

The smaller turbo would likely set full boost around the 2500rpm zone which would be insane. With our s475 96mm turbine 1.32 we see full boost at 3500rpm and it is perfect for driving and very fun especially with the ability to put out high 800 to low 900 whp which should be good for a bottom 9 second car.

As I have also spoken once before there are many different turbo options. I'm just striving to give the best bang for the buck. Obviously the technologies that we have incorporated (spool valve, proper pipe sizing, etc) can be used on a much better turbo such as a billet ball bearing precision in which case a large 75mm turbo capable of 900whp would likely also hit full boost around 2500rpm zone. The thing is the borg warner turbos can generally be had for $725-800 range while you will be spending upwards of $2000+ for a nice ball bearing garrett/precision.

We are just striving to make the cheaper turbo perform at a level as the top end turbo thus making a all around better $/hp ratio while keeping a nice powerband. If you want it all though feel free to message me and I can help pick the perfect combo to get you to whatever your goal is.

01-29-2017, 03:17 PM	#12
Goertz Drives: 2016 1SS Auto Join Date: Mar 2016 Location: Houston Posts: 530	I'll say with the stock cam (and I've noticed this on blower cars as well) that trq drops off hard right at 5500rpm, this ends up with a dyno that virtually always has hp and trq being relatively equal to each other. With the right cam this top end will pickup dramatically. My engine has been 100% bone stock. When car goes back together though we will have new fueling system and at bare minumum some pistons and rods in there so that we can push the envelope and max out this turbo. The S475 is rated at 105lb of air or 1050hp so figure with powertrain loss around 850whp capable. As I have talked to other people is lag is more of a concern and you want a killer road course/street car then I would suggest going to a Borg Warner T4 1.0ar S366. This turbo is rated at 800-850hp so with powertrain loss it would be able to make around 700whp at tip tops. This is right on the ragged edge of what stock engine internals can handle and it is also more than stock fueling can handle (however lt4 pump/injectors and zl1 lift pump can put out 700whp of e85 as Jannetty has proven http://www.camaro6.com/forums/showthread.php?t=481614 ) or you could look into our alternative fueling approach that is soon to come. The smaller turbo would likely set full boost around the 2500rpm zone which would be insane. With our s475 96mm turbine 1.32 we see full boost at 3500rpm and it is perfect for driving and very fun especially with the ability to put out high 800 to low 900 whp which should be good for a bottom 9 second car. As I have also spoken once before there are many different turbo options. I'm just striving to give the best bang for the buck. Obviously the technologies that we have incorporated (spool valve, proper pipe sizing, etc) can be used on a much better turbo such as a billet ball bearing precision in which case a large 75mm turbo capable of 900whp would likely also hit full boost around 2500rpm zone. The thing is the borg warner turbos can generally be had for $725-800 range while you will be spending upwards of $2000+ for a nice ball bearing garrett/precision. We are just striving to make the cheaper turbo perform at a level as the top end turbo thus making a all around better $/hp ratio while keeping a nice powerband. If you want it all though feel free to message me and I can help pick the perfect combo to get you to whatever your goal is.