Whats a good 700+rwhp exhaust system
#1
Whats a good 700+rwhp exhaust system
Well, I am building a drag strip car that will make over 700 rwhp (cross your fingers.lol), and I was wondering if there is a exhaust system that is best for a setup for it. O, its a 383 lt1, with a F1, or ptk turbo setup. Never see this asked, and just wondering.
Joe
Joe
#3
Re: Whats a good 700+rwhp exhaust system
strait through mufflers or none at all... it wont cost that much. I have seen people make that kind of power and put it through a off the shelf catback (though you wont see it often)
#6
Re: Whats a good 700+rwhp exhaust system
If you go with a SC you might be able to just use a off the shelf exhaust system, like mufflex... but for a turbo setup you're going to have to go with a custom exhaust. You should probably speak to someone at Pro Turbo kits about your exhaust if you eventually decide to go that route.
#7
Re: Whats a good 700+rwhp exhaust system
Just because it makes 700rwhp does not mean that it needs 4" exhaust....the same amount of air is being pumped through a 400hp 383 as in a 700hp 383. We use dual 3.5" with Flowmaster race mufflers on 800hp 502's and don't see much backpressure at all. If you were making your 700hp at 9000rpm then the exhaust system would need to be bigger...think CFM/min
#8
Re: Whats a good 700+rwhp exhaust system
Just because it makes 700rwhp does not mean that it needs 4" exhaust....the same amount of air is being pumped through a 400hp 383 as in a 700hp 383. We use dual 3.5" with Flowmaster race mufflers on 800hp 502's and don't see much backpressure at all. If you were making your 700hp at 9000rpm then the exhaust system would need to be bigger...think CFM/min
That is absolutely not true. If that were the case than any 3" system would be good. With FI...the more air you push..the more power you make...your pushing ALOT more air making 700rw than you are making 400...which is also the reason you need bigger injectors..more air..you need more fuel...which means more being pumped out of the exhaust
#10
Re: Whats a good 700+rwhp exhaust system
The Mufflex mufflers both suck (Spintech and BlowMaster). However, the 3.5" and 4" piping is good. Get the piping and put in a Magnaflow muffler and you're good for way over 700 rwhp, plus it's reasonably quiet. BTW, Magnaflow makes a muffler that bolts right into the Mufflex piping with no modifications.
Mike
Mike
#11
Re: Whats a good 700+rwhp exhaust system
Just because it makes 700rwhp does not mean that it needs 4" exhaust....the same amount of air is being pumped through a 400hp 383 as in a 700hp 383. We use dual 3.5" with Flowmaster race mufflers on 800hp 502's and don't see much backpressure at all. If you were making your 700hp at 9000rpm then the exhaust system would need to be bigger...think CFM/min
# of pipes*(pi*radius^2)
2*(3.14*1.75^2) = 19.23 in^2
1*(3.14*2^2) = 12.56 in^2
So, your comparison isn't valid. Also, where did the assumption that a 400hp motor is going to pump the same amount of air as a 700hp motor come from? That makes absolutely no sense at all. For the OP, I would think either a 3" dual setup or a 4" mufflex system would suffice.
Last edited by Sweetred95ta; 10-17-2006 at 08:13 AM.
#13
Re: Whats a good 700+rwhp exhaust system
I've seen the 4" Mufflex support an 1,125 flywheelHP LT1 383 running 20+# of Vortch boost. They took the Mufflex exhaust system completely off the car, to save 50+#, and there was no HP gain when running Borla collector mufflers.
I think MachinistOne may be talking about DUAL 4" pipes as being overkill, particularly when he mentions dual 3.5" mufflers for 800HP 502's. May not be aware the 4" Mufflex is a single pipe cat-back.
I think MachinistOne may be talking about DUAL 4" pipes as being overkill, particularly when he mentions dual 3.5" mufflers for 800HP 502's. May not be aware the 4" Mufflex is a single pipe cat-back.
#14
Re: Whats a good 700+rwhp exhaust system
I've seen the 4" Mufflex support an 1,125 flywheelHP LT1 383 running 20+# of Vortch boost. They took the Mufflex exhaust system completely off the car, to save 50+#, and there was no HP gain when running Borla collector mufflers.
I think MachinistOne may be talking about DUAL 4" pipes as being overkill, particularly when he mentions dual 3.5" mufflers for 800HP 502's. May not be aware the 4" Mufflex is a single pipe cat-back.
I think MachinistOne may be talking about DUAL 4" pipes as being overkill, particularly when he mentions dual 3.5" mufflers for 800HP 502's. May not be aware the 4" Mufflex is a single pipe cat-back.
#15
Re: Whats a good 700+rwhp exhaust system
I've seen a 500 fwhp 406 gain a repeatable 3 mph at the track just by removing the 4" SpinTech muffler.