Which type of forced induction?
Thread Starter
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Joined: Sep 2010
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You aren't getting 1200rwhp reliably out of a 4L60. I would say 900rwhp and it's a wear item.
And that's an FLT Level VII or RPM Level X or whatever. 4L80 is a different beast... but has it's own set of problems with converters. TH400 would be the best choice.
Until you have that down, picking a power adder is sort of moot.
But if you decide to go for 900rwhp... a PT7675 or D1X gets you into that 800+rwhp range on pump gas or more on the corn. I would probably look at something like that. Or an F1A with lower boost...
And that's an FLT Level VII or RPM Level X or whatever. 4L80 is a different beast... but has it's own set of problems with converters. TH400 would be the best choice.
Until you have that down, picking a power adder is sort of moot.
But if you decide to go for 900rwhp... a PT7675 or D1X gets you into that 800+rwhp range on pump gas or more on the corn. I would probably look at something like that. Or an F1A with lower boost...
You aren't getting 1200rwhp reliably out of a 4L60. I would say 900rwhp and it's a wear item.
And that's an FLT Level VII or RPM Level X or whatever. 4L80 is a different beast... but has it's own set of problems with converters. TH400 would be the best choice.
Until you have that down, picking a power adder is sort of moot.
But if you decide to go for 900rwhp... a PT7675 or D1X gets you into that 800+rwhp range on pump gas or more on the corn. I would probably look at something like that. Or an F1A with lower boost...
And that's an FLT Level VII or RPM Level X or whatever. 4L80 is a different beast... but has it's own set of problems with converters. TH400 would be the best choice.
Until you have that down, picking a power adder is sort of moot.
But if you decide to go for 900rwhp... a PT7675 or D1X gets you into that 800+rwhp range on pump gas or more on the corn. I would probably look at something like that. Or an F1A with lower boost...
Thread Starter
TECH Addict
Joined: Sep 2010
Posts: 2,898
Likes: 467
A 7675 is a terrible choice for a 408! If you want to run a 76 compressor then at least let the 408 breath a little and run the T6 88/96 turbine and even then its going to be backed up. Nice thing is you can get an SXE476/88 for about the same price as a PT7675. I would combine it with the 1.58 housing, it'll still spool plenty fast and let it breath a lot more then the tiny T4 precision 75 turbine with .96 housing.
You aren't getting 1200rwhp reliably out of a 4L60. I would say 900rwhp and it's a wear item.
And that's an FLT Level VII or RPM Level X or whatever. 4L80 is a different beast... but has it's own set of problems with converters. TH400 would be the best choice.
Until you have that down, picking a power adder is sort of moot.
But if you decide to go for 900rwhp... a PT7675 or D1X gets you into that 800+rwhp range on pump gas or more on the corn. I would probably look at something like that. Or an F1A with lower boost...
And that's an FLT Level VII or RPM Level X or whatever. 4L80 is a different beast... but has it's own set of problems with converters. TH400 would be the best choice.
Until you have that down, picking a power adder is sort of moot.
But if you decide to go for 900rwhp... a PT7675 or D1X gets you into that 800+rwhp range on pump gas or more on the corn. I would probably look at something like that. Or an F1A with lower boost...
Fairly simple setup. Reliable. Lots of available help ( Bob @ Brute Speed can set you up). My stroker makes crazy power down low & melts your face all the way to 6k rpm. Under the curve power is what makes this street car fun. No IAT issues. The sounds are incredible, whine & blowoff is worth it on its own ( not a quiet sleeper by any stretch).
My $0.02
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