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Tech Talk => Engine Mechanical / Electrical => Topic started by: hpjunkie on March 06, 2016, 05:52:38 PM

Title: Anybody using 4.5" or 5" Exhaust tips
Post by: hpjunkie on March 06, 2016, 05:52:38 PM

I am going to a big cubic inch motor and have been told I should use 5" tips or at a minimum 4.5" Its not expensive to swap them out just "Break out another thousand" I mean hundred. The new motor is a 632 inch 800 hp. Any experience here with the bigger tips? the Lightning headers I have 5" od so I would have to reduce.

Title: Re: Anybody using 4.5" or 5" Exhaust tips
Post by: Blue2184 on March 06, 2016, 06:31:45 PM

I'm running 4" collectors on my 632 but they are a pretty short collector...


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Title: Re: Anybody using 4.5" or 5" Exhaust tips
Post by: Blue2184 on March 06, 2016, 06:34:45 PM

Think about the exhaust in a hot rod or race car? Would they have to run 5" exhaust?


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Title: Re: Anybody using 4.5" or 5" Exhaust tips
Post by: capogniracing on March 06, 2016, 06:46:14 PM

My collectors are 4.5 and I'm almost at 1000hp, but at the same time Bostick "six oh nine" is running bassetts with 4 inch and he is making 1600+hp


Gimme that BECKY!

Title: Re: Anybody using 4.5" or 5" Exhaust tips
Post by: Flusher on March 06, 2016, 06:54:03 PM

What size are the primary tube diameters?  Are they stepped?

Title: Re: Anybody using 4.5" or 5" Exhaust tips
Post by: hpjunkie on March 06, 2016, 07:24:43 PM

primaries are 4 inch. thanks for the replies. I did think about the drag car.   I havent done anything about that yet. I now have an aluminum "A" THanks guys for pointing out what I thought was obvious, never can tell of someone is selling or not.

Blue: What impeller are you using for that combo?

Title: Re: Anybody using 4.5" or 5" Exhaust tips
Post by: Blue2184 on March 06, 2016, 07:38:53 PM

Stainless a


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