Expert Turbo on BB Chevy advice????? - Page 3 - Lateral-g Forums

Twin_Turbo · #21 11-19-2005, 02:41 AM

Chris, go to corvetteforum.com and do a search on STS in the C3 section. I've given my view there, take it for what it's worth but I did a fairly lenthy write up there on why there is better stuff out there. Don't feel like typing all that up again

69MyWay · #22 11-19-2005, 03:20 AM

Quote:

Originally Posted by Twin_Turbo

Chris, go to corvetteforum.com and do a search on STS in the C3 section. I've given my view there, take it for what it's worth but I did a fairly lenthy write up there on why there is better stuff out there. Don't feel like typing all that up again

Been searching for the last 1/2 hour or so. The only one I find under your name with STS TURBO in the search is a response to a single turbo question where you mentioned your prior post regarding STS.

I did however pull some amazine info from the C5 sections. A fellow over there is running 9's with the twin turbo STS stuff. WOW! Looks like a handful of C5 guys are running it.

I don't know anybody that has one personally. Heck...I don't even know anybody that has any turbo powered V8 Chevy!

More research.........

protour · #23 11-19-2005, 03:53 PM

Quote:

Originally Posted by 69MyWay

I was just taking a buddy out to lunch yesterday (weather was 70 degrees and BEAUTIFUL!) when a 05 Mustang with that silly narrow stripes on the hood smoked me from a roll. I pulled on him at first, then it was like he got hit by a sledge hammer and just exploded. He shot past me and I didn't hear the whine of a charger. After he got ahead and slowed down I noticed black smoke coming out of his pipes and he had aftermarket exhaust. The black smoke tells me he has soemthing under the hood.

Anyway, that was just sick! A stock 05 GT has 300 hp. DANG...I really need this mod BAD!

This is the first I heard of trouble with the STS. In theory at least, it is awesome. It has some interesting features.

The downside is, once the hood is open...nobody can see it. Therefore, for bench racing at the car shows you got nothing. Nobody gets on the ground to look under the rear of the car.

Hahah, I sure do! I wanna see suspension parts!

-Matt

69MyWay · #24 11-19-2005, 06:31 PM

New plan.

I am going to sell the entire BB from the 69 Vette with the EFI, accessories, hooker headers, computer, and harness.

In its place will go my spare LS1 with a turbo configuration.

This will give me more room to mount twin turbos, take advantage of the all aluminum block, and the latest greatest tech for the Gen III motors.

I shouldn't have any problem getting a bellhousing and clutch to work with the ROD6. I should be able to sell the compete fuel injected 468 for enough to get the basics in place on the LSX motor.

Twin_Turbo · #25 11-22-2005, 02:11 PM

Chris, I sent you a PM

69MyWay · #26 12-21-2005, 03:34 AM

I tracked down a fellow at corvette forum running a twin turbo on his 71 big block Corvette. He has been sharing some photos and details of the build with me. He is running 11 psi of boost on a non-intercooled system spinning a pair of turbos tucked in the space between the firewall and front tires. The turbos are high enough to drain into the pan. He is running it all through a carb.

He is still tweaking and tuning but according to Mike it is a beast. He plans on going back and cleaning it all up with more detail items at a later date.

This is PURE inspiration for me. The coolest thing is he kept the sidepipes. I would have to ditch the power brake booster and possibly lay my radiator at a different angle as he did to clear the pipe coming over the core support. However, I think there may be other options with this.

An intercooler does not seem possible without a major overhaul of the nose. If I am keeping compression around 9.2:1 and running low boost (desired hp in the 600 range), I wonder what value a cooler would or wouldn't have.

Here are some pictures of Mike's turbos.

69MyWay · #27 12-21-2005, 03:37 AM

Front view

Speedster · #28 12-21-2005, 04:43 AM

69MyWay...

With the turbo setup as pictured you would gain very little with an intercooler.
Two reasons:
1 - You are running a blow through carb which in itself is a mini intercooler between the temperature drop of the fuel when it atomizes and the length of the intake runners.
2 - There are long lengths of plumbing and if you can keep the underhood temperature down with good airflow that will also help.

-Bruce

**jonny51** · #29 12-21-2005, 07:44 AM

So Chris are you going back to the original plan of a BB?600 hp sound be a piece of cake!

69MyWay · #30 12-21-2005, 10:18 AM

Bruce,

The plan is though to run EFI as the car is now. However, the Edelbrock system won't run under boost so I have to seek out a new computer/injectors, etc.

Johnny, after seeing Mike's car and knowing how I like to detail and prep things, THIS IS THE TICKET!!!!!!!!!!!!!!

I am thinking about checking out the upper intake manifold used on the 97-00 big block chevy trucks. It is more of a plenum type with the throttle body pointing horizontal. That would assist in the plumbing.

Mike tells me his Big Block twin turbo Vette was on the drawing board for more than a year as he sorted it out in his head and gathered parts. As long as I can swap and trade to generate some side cash I should have something running inside of 8 months.