How much boost on a 13:1 408??
Thread Starter
Teching In
Joined: Jan 2009
Posts: 32
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From: Georgetown Tx.
How much boost on a 13:1 408?? I am toying with the idea of switching my nitrous set up over to a procharger set up. Maybe an F-1C.
Was wondering about doing it with the current 13:1 compression, to keep the initial cost down.
It's a forged 408. TFS 225s. 90/90. 1 7/8 kooks. I would cam it accordingly right away. Already have a fuel cell with an A-1000 pump and regulator. Would run VP C-16, or what ever I need to for fuel.
If this were possible, what kind of wheel hp could I expect?
Thanks
Roger
Was wondering about doing it with the current 13:1 compression, to keep the initial cost down.
It's a forged 408. TFS 225s. 90/90. 1 7/8 kooks. I would cam it accordingly right away. Already have a fuel cell with an A-1000 pump and regulator. Would run VP C-16, or what ever I need to for fuel.
If this were possible, what kind of wheel hp could I expect?
Thanks
Roger
It could be done. I would run E85 for sure on that beast. If you do a lot of street driving, I'd ditch the A1000 for a MagnaFuel or a triple Walbro setup. I would imagine 800-900rwhp would be easy.
Thread Starter
Teching In
Joined: Jan 2009
Posts: 32
Likes: 0
From: Georgetown Tx.
Yea, I wouldn't be aposed to a head gasket change. Or even upgrading to a bigger toploader fuel pump. But switching to a belt drive would defeat the purpose of keeping of initial cost down.
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Verdad Gallardo ya.... well ur gonna either gonna spend alot of moeny over time buying race fuel, or u could send a little money now to drop compression... bigger combustion chambers? new set of dished pistons...? just throwing out ideas...
Your biggest problem is going to be the long stroke. The 4.00 stroke causes the rod to have to go up further into the piston which sacrifices the thickness of the piston top and more importantly usually puts the top ring land pretty shallow on the top of the piston. This means that it will have zero tolerance for detonation and will want to pop the ring land off right at the intake valve relief where it is usually thinnest.
Let me ask you this....what are your goals for the car? Power? Track times? You could run a lower level of boost on it with E-85 or C-16...and make monster power but your reliability would be questionable. What's the CC's size on the heads? I think you could get away with it but I would do it right the first time and use a dished piston.
If it were mine, I would definitly run methanol with a belt drive, leaving te compression where it is. Leaving it EFI or going MFI is your call, but I think you could build some incredible power with that compression. As stated, keeping the heads where they belong could be a challenge, but it's doable. Also, on methanol, you could all but eliminate the cooling sytem. If it's truly a drag-only deal, you could prob get away with it.
I say methanol also. You need to keep detonation at bay with that much compression. Methanol will cool the combustion temps some to control detonation.
You are running the same compression as Tom Kempf and he is running M1 methanol. I haven't kept up on the car for awhile so I don't know how its coming along. But I do know its flying for sure.
You are running the same compression as Tom Kempf and he is running M1 methanol. I haven't kept up on the car for awhile so I don't know how its coming along. But I do know its flying for sure.
