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#1
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Headman's vs. 3 tube headers
I have been running Headman 3/4 tube headers on my 78 T/A. I have the engine out at the moment and I will begin putting it back in this week. Awhile back I picked up thse ceramic coated used 3 tube headers. Would I gain or loose and power/performance switching to these? Im running the engine combo in my signature. It is RPM limited due to the TRW pistons, stock rods (ARP bolts) and unfortunately it being a 557 block.
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Johnny US Army Retired 1978 T/A 463 Pontiac, KRE 74cc 292CFM D-ports, Lunati VooDoo, V-max lifters, TKII, ATM 850 E85 carb, TCI TH-350 race tranny, 3600 converter 3.73 12 bolt 11.63@116.68mph 1981 T/A 4-speed 406 Pontiac, Merrick ported 6X heads, Comp 270S cam, Crosswind intake 750 Street Demon, 3.42 30 spline Eaton posi street car. 1980 Formula 350 Pontiac back burner project 1972 LeMans 350 Pontiac |
#2
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Interesting thread on the 3-tube headers posted in the 'Pontiac Race' forum a little while back:http://forums.maxperformanceinc.com/...d.php?t=565379
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1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
#3
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I will most likely put the Hedman 4 tubes back on due to the collector issue. I did mount these on just to take a look...
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Johnny US Army Retired 1978 T/A 463 Pontiac, KRE 74cc 292CFM D-ports, Lunati VooDoo, V-max lifters, TKII, ATM 850 E85 carb, TCI TH-350 race tranny, 3600 converter 3.73 12 bolt 11.63@116.68mph 1981 T/A 4-speed 406 Pontiac, Merrick ported 6X heads, Comp 270S cam, Crosswind intake 750 Street Demon, 3.42 30 spline Eaton posi street car. 1980 Formula 350 Pontiac back burner project 1972 LeMans 350 Pontiac |
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