C5, APS Twin Turbo, Head/Cam -- Questions
#1
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From: Fort Wayne, IN
C5, APS Twin Turbo, Head/Cam -- Questions
Given APS' release and promotion of their Twin Turbo kit, I jumped in on the deal. But, that got my gears turning. I'm looking at going a little farther than just simply slapping the Twin Turbo kit on my 99 Vette. So......
What I'm looking at is a set of AFR heads and a mild turbo cam to liven things up some. Fuel system upgrades initially will be a Whalbro pump and injectors on the stock lines/rails. Thinking of a meth kit for it's timing advantages. Reason for the aftermarket heads is for a little more control over compression ratio via the combustion chamber in addition to all the mainstream positives of the aftermarket castings.
I am only planning on running 7-8 PSI through the motor, but given that the VE should be well improved over a stock motor, it should be a VERY healthy amount of air going through the motor. I.E. I KNOW it's going to not be a matter of if but when. Bear in mind that this isn't a daily driver although I'm SURE I'll be driving it more once completed.
Anyway, I just wanted to get some peoples thoughts on how far the stock shortblock could be pushed given the above configuration and properly tuned??? I'm not shooting for a record or anything by they way, just looking to have a well though out potential maximizing setup.
What I'm looking at is a set of AFR heads and a mild turbo cam to liven things up some. Fuel system upgrades initially will be a Whalbro pump and injectors on the stock lines/rails. Thinking of a meth kit for it's timing advantages. Reason for the aftermarket heads is for a little more control over compression ratio via the combustion chamber in addition to all the mainstream positives of the aftermarket castings.
I am only planning on running 7-8 PSI through the motor, but given that the VE should be well improved over a stock motor, it should be a VERY healthy amount of air going through the motor. I.E. I KNOW it's going to not be a matter of if but when. Bear in mind that this isn't a daily driver although I'm SURE I'll be driving it more once completed.
Anyway, I just wanted to get some peoples thoughts on how far the stock shortblock could be pushed given the above configuration and properly tuned??? I'm not shooting for a record or anything by they way, just looking to have a well though out potential maximizing setup.
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I'm not expecting a long life even with all the stars lined up. Admittedly, it'll probably take me a year to even put 5-7K miles on it, at which point I'll be thinking new shortblock and more boost anyway.
Thanks for the estimations guys. Real world feedback is always helpful. Looks like the meth kit is a good idea to boot.
Thanks for the estimations guys. Real world feedback is always helpful. Looks like the meth kit is a good idea to boot.
#6
Originally Posted by Fastbird93
I'm not expecting a long life even with all the stars lined up. Admittedly, it'll probably take me a year to even put 5-7K miles on it, at which point I'll be thinking new shortblock and more boost anyway.
Thanks for the estimations guys. Real world feedback is always helpful. Looks like the meth kit is a good idea to boot.
Thanks for the estimations guys. Real world feedback is always helpful. Looks like the meth kit is a good idea to boot.
Just remember at over 550rwhp pistons tend to break and if you break a piston, the chunk of piston going out the exhaust will take out the exhaust wheel on the turbo. expensive. Dangers of pushing the stock pistons when you know it wont last long..
#7
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From: Fort Wayne, IN
Originally Posted by chriswtx
Just remember at over 550rwhp pistons tend to break and if you break a piston, the chunk of piston going out the exhaust will take out the exhaust wheel on the turbo. expensive. Dangers of pushing the stock pistons when you know it wont last long..
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#8
The AFR heads are great, but I'd wait until you're ready to build a new motor from scratch before you buy them and a turbo cam.
I ran a ProCharger D-1SC followed by a TTi Stage X on a stock bottom end LS1 at 500 and 600 rwhp respectively without issue.
If you want some peace of mind you can install a meth kit or just toss in a can of Torco in each tank. Both will offer added levels of safety on the stock short block.
I ran a ProCharger D-1SC followed by a TTi Stage X on a stock bottom end LS1 at 500 and 600 rwhp respectively without issue.
If you want some peace of mind you can install a meth kit or just toss in a can of Torco in each tank. Both will offer added levels of safety on the stock short block.
#9
Unless you're prepared to rebuild the engine right away, I'd go with just the turbo for now. You could add the meth kit and add some timing back into the engine, which will dramatically up rwhp.
Check out this build that we did with twin turbo's. http://www.exoticperformanceplus.com...Car.php?car=26 Bob
Check out this build that we did with twin turbo's. http://www.exoticperformanceplus.com...Car.php?car=26 Bob
#10
go ahead and add a twin walbro or twin racetronix fuel pump system now and get it doen and over with. you dont want to have to do the fuel system twice. and you will get hungry for more power I will guarantee you that. also go ahead and beef up the injectors too and maybe do the supply/return line and regulator.