Gibson Clamp-on 4.5" bullet mufflers

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04-25-2017, 06:55 AM

#11

Checkmate787hp

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Quote:

Originally Posted by Bill 3

I loved them, but cannot use them with my cam, I have to run dry pipes. 600hp is all I have. According to Gibson they are good to 1200

http://gibsonperformance.com/i-22957...-110003.html#!

Yes, still for sale.

My concern is I don't know my cam specs...I have water tubes that dump at the very end of the tailpipe....did you get water reversion ?

04-25-2017, 06:57 AM

#12

Bill 3

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yes

04-25-2017, 07:08 AM

#13

Checkmate787hp

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Damn...did it lock you motor up or just make it run rough?

04-25-2017, 07:12 AM

#14

Bill 3

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Seems like after about every 3rd outing it would kill my spark plugs. Symptoms were similar to fouling plugs or flooding.

04-25-2017, 07:42 AM

#15

Checkmate787hp

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What kind of exhaust....not an automotive cam right?

04-25-2017, 08:09 AM

#16

Bill 3

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I have a custom ground cam.

It seems you are trying to figure if you will have reversion. I cannot answer that, I suggest asking your engine builder or posting your cam specs in the tech section and see what some of the guys on here suggest.

04-25-2017, 08:30 AM

#17

Checkmate787hp

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Quote:

Originally Posted by Bill 3

I have a custom ground cam

It seems you are trying to figure if you will have reversion. I cannot answer that, I suggest asking your engine builder or posting your cam specs in the tech section and see what some of the guys on here suggest.

Yah problem with that is I'm having trouble getting a hold of the guy who built my engine...I just bought the boat and unfortunately do not have the cam specs....guy who built my motor is jim benny from Maryland but nobody knows his new shop.....

06-22-2017, 12:20 PM

#18

turbos230

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Do you have these? I am interested if you have 4 units, for 2 engines

06-24-2017, 06:56 PM

#19

ACrooks69

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I've got a pair of 4.5 Gibsons if he has already split up the set. One of the mufflers has a slight relief in it so my steering ram would clear. The ram make the relief, didnt notice the contact before hand. Not really noticeable.