Headers ?
12-03-2006, 08:16 PM
#1
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Headers ?
Has anyone here tried the Hardin Marine typhoon headers?
I am running HP 500's that have been bumped up to 620 HP and was wondering if headers would make a noticable improvement over the Gil exhaust.
Jeff
I am running HP 500's that have been bumped up to 620 HP and was wondering if headers would make a noticable improvement over the Gil exhaust.
Jeff
12-04-2006, 03:41 PM
#3
Re: Headers ?
Originally Posted by WAGS382
Has anyone here tried the Hardin Marine typhoon headers?
I am running HP 500's that have been bumped up to 620 HP and was wondering if headers would make a noticable improvement over the Gil exhaust.
Jeff
I am running HP 500's that have been bumped up to 620 HP and was wondering if headers would make a noticable improvement over the Gil exhaust.
Jeff
But you may want to consider Stellings also
Last edited by Too Old; 12-24-2006 at 10:24 AM.
12-04-2006, 05:27 PM
#5
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Re: Headers ?
Etops will provide more power and of course that nice bling factor.
Fred is not kidding, there will be a 10% price increase.
Good luck with your project.
Kirk
Ateco Engine and Dyno Shop
Fred is not kidding, there will be a 10% price increase.
Good luck with your project.
Kirk
Ateco Engine and Dyno Shop
12-04-2006, 06:46 PM
#6
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Re: Headers ?
Anybody ever do any comparisons with the "tube tops"? They look to have runners at least close to 32-34" in length and close to being equal length.
12-04-2006, 08:27 PM
#7
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Re: Headers ?
mrhorsepower1
Thanks for the response
These are 502's with the AFR 305's heads and a mild cam. All the parts are original HP500 except the heads and valve train and I like the stock look of the gil's.
The boat is a 382 Fastech, it responded well to the extra 100 hp per side with a 8 mph increase, I am not sure what 25-30 more would do.
Has anyone compared the E Tops vs sport tubes?
Thanks for the response
These are 502's with the AFR 305's heads and a mild cam. All the parts are original HP500 except the heads and valve train and I like the stock look of the gil's.
The boat is a 382 Fastech, it responded well to the extra 100 hp per side with a 8 mph increase, I am not sure what 25-30 more would do.
Has anyone compared the E Tops vs sport tubes?
12-04-2006, 08:53 PM
#8
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Re: Headers ?
I have done back to back comparisons on the CMI E-tops vs. the Sport Tubes. The Sport Tubes make 15-20 HP more, but only above the 5200-5400 RPM range. There are points from 4000-5000 RPM where the E-tops make more torque than the SP's. The Sport Tubes start to shine from 5300-6800 RPM. On my combination, the 2 1/4" ID Big Tubes added another 20 HP over the SP's but again only at the higher RPM.
The E-Tops are the all around best value...except for the bling!
The E-Tops are the all around best value...except for the bling!
12-04-2006, 10:19 PM
#9
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Re: Headers ?
I had heard that there were ALOT of problems with the "Big Tubes" cracking around the mounting flange on the heads? Worth the extra 10-15 at that RPM?
I also noticed an increase of 30-40 hp from the Gils to the E-tops!
Dave
I also noticed an increase of 30-40 hp from the Gils to the E-tops!
Dave
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