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#1
06-05-2013, 10:53 AM
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2" or bigger headers for 64-67 a body?
Anybody running 2" or bigger primaries on a round port in a 64-67 gto/tempest/le mans? I was putzing around last night thinking of ways to make my car a better commuter and thought they might pick me up a mpg or so over my Doug's 1 7/8
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#2
06-05-2013, 11:02 AM
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I had 2" headman huslser headers on mine.
They worked nicely. |
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#3
06-05-2013, 01:22 PM
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Doubt you'll see a mileage gain over the 1 7/8 tubes. But anyway Hedman has a race header (different from their street headers) that fit good and has big tubes for RAIV heads.
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Monty Frerichs B&M Machine Box Elder SD |
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#4
06-05-2013, 01:31 PM
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I was kind of joking about the MPG
Anyway, looks like they list the 2" for a 66 but not a 65, Jack your car is a 65, right? Do you remember if it was part no. 35030? Kind of random but I think I ran into you at a NAPA in Millersville about 5 years ago, since moved to Spokane WA and got my car running. At the time I was living in Bowie. |
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#5
06-05-2013, 02:12 PM
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Mad dog headers?
Tom Syron |
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#6
06-05-2013, 07:21 PM
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Quote:
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#7
06-20-2026, 10:30 AM
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holy thread bump batman. still wondering about this.
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#8
06-25-2026, 04:58 AM
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It’s really best to size by your exh flow numbers.
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#9
06-25-2026, 08:43 AM
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those hedman huslers are now discontinued. i had mine on my 66. i still have them and a set of the d port husler 2" headers. some of the best fitting headers ive owned. mine have the flat collector that actually sounds pretty good open.
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#10
06-25-2026, 10:21 AM
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FYI: Mad dog is no longer doing the Pontiac headers ....
Kris. |
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#11
06-25-2026, 07:02 PM
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Quote:
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65 GTO, Tiger Gold, Nostalgia Super Stock 421, 2-Carter AFB carbs, Stock Suspension, 3550lbs Full Exhaust-- 9.70's@135 66 GTO (Retired race car) 421 CID Multiple NSCA/NMCA World Champion 66 GTO 389 3x2, 4 speed, 3.90 gear, Montero Red 33K original Miles 67 GTO 2dr Post, 428, Tri Power, 3.55 Gears 80 Trans Am Black SE Y84 W72 WS6 |
| The Following User Says Thank You to Mike Davis For This Useful Post: | ||
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#12
07-02-2026, 10:51 AM
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Quote:
i tried to buy a 3rd set awhile back just because. lol the set on my 66 i got off ebay, top bid, brand new in the box for 48 bucks free shipping....i couldnt pay fast enough! this was in 06 and even then they was 600 bucks |
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#13
07-06-2026, 03:11 PM
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Quote:
I actually checked mine last week after a cruise; I got 4.7 miles to the gallon. You can file it under pump gas streetcar with 2" headers.
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"Artificial intelligence is no match for natural stupidity". 1966 GTO Post Coupe, 467ci. N/A Pump gas, best 1/4 11.6 118mph 1966 GTO Post Coupe, "The Bright Idea" 535ci. N/A Pump gas, best 1/4 9.56 139mph |
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