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#1
10-22-2013, 01:00 AM
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Race header recomendation for 68 Firebird D-ports
I need a good set of headers for my D-port motor. What is available regarding , tuned, primary tube diameter, collector diameter, etc. Thanks guys , it's been a long time and I dont know what is available, ie who is making nice off the shelf headers.
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#2
10-22-2013, 02:05 AM
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There are some Doug's Headers floating around here in the for sale section I like my Hookers. Fit real well on my 68 firebird.
Love the video! Rich
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68 Firebird 400, #16, xe274, street dominator, 850 DP, hooker headers, t400, 3500 stall, 3.73, 295/65 bfg drag radicals... best 13.27 @ 102.8, 1.90 60ft |
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#3
10-22-2013, 03:20 AM
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Heddman makes a decent set that would be good for racing, 2 x 3.5 I believe. And they fit pretty good, but one tube goes around the frame.
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1969 Firebird, Tx3-455/468 machined by CVMS E-heads by Dave Wilcox/Comp Cams 300B-6 flat solid 850DP on E-85 by Eric Niefert/T2 1" plastic spacer T-400/PTC 4000/390's/30x9 Hoosier radial slicks,#3400 1.38 60' 6.32 @ 108 MPH at Northeast Dragway NC 5/23/15 (9th pass on new engine) https://m.youtube.com/watch?v=ePCu2v...ature=youtu.be 1.37 60' 6.26 @ 109 half track, 9.86 @ 136 1/4 mile, #3350 11/26/16 at Richmond Dragway (125th pass on new engine) |
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#4
10-22-2013, 07:28 AM
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Even to run low 10s with that size motor a 1 3/4 tube and just a 3" collector will work fine.
Primary tube lenght is not as critical a factor as people make it out to be, and alot of time shortyer tubes make for more room for less restrictive bends. Overall collector lenght is a big factor and needs to be messed with, most times a additional 15 to 18 inches will put you right in the ball park.
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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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#5
10-22-2013, 07:48 AM
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We run the 1&3/4x3 Heddmans on the Bird and the fit and ground clearance is good. Not sure if the 68 body/frame configuration is the same as our 69 but I would think they are real close?
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69 Bird w/1970 400 block(409 cubes), #64 heads, hyd. roller, Q-jet by Jeff E., original interior, ps, pdb, th350, and 3.73 gears. Pump gas, street driven muscle. 3800 lbs. race weight. Best, 11.39 @118, my son's car. 79 T/A w/463, Scat crank, Eagle rods, Icon pistons, Lunati solid roller, 262/270, KRE 325 heads, Northwind intake, QF950 carb, full interior, ps, pdb, th350, and 3.73 gears. Pump gas, 3650 lbs. race weight. 10.68 @ 126 so far... no tuning yet. |
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#6
10-22-2013, 09:27 AM
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Mad Dogs
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#7
10-22-2013, 10:59 AM
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Quote:
Part #9159 - Stock Pontiac D-port heads, 1 3/4" x 1 7/8" step primaries, 3 1/2" collectors, auto and 4 speed. $475. And it looks like they fir inside the frame.
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1969 Firebird, Tx3-455/468 machined by CVMS E-heads by Dave Wilcox/Comp Cams 300B-6 flat solid 850DP on E-85 by Eric Niefert/T2 1" plastic spacer T-400/PTC 4000/390's/30x9 Hoosier radial slicks,#3400 1.38 60' 6.32 @ 108 MPH at Northeast Dragway NC 5/23/15 (9th pass on new engine) https://m.youtube.com/watch?v=ePCu2v...ature=youtu.be 1.37 60' 6.26 @ 109 half track, 9.86 @ 136 1/4 mile, #3350 11/26/16 at Richmond Dragway (125th pass on new engine) |
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#8
10-22-2013, 01:24 PM
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Quote:
 http://maddogheaders.net/
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'68 Firebird 463/pump gas/SD 325 E-heads/266-272 SR cam/1050 Dominator/3.73/ET Street Radials/1.37 60'/6.30@108.80/9.93@135.14 Hot Rod Drag Week finishing averages: 2014 - 11.12 @ 118.56 2015 - 10.84 @ 124.97 2016 - 10.56 @ 127.88 2017 - 10.29 @ 130.74 2018 - 10.29 @ 130.53 2019 - 10.16 @ 132.34 2021 - 10.09 @ 132.69 2022 - 10.13 @ 133.07 9.93 run - https://youtu.be/hII0_UlYM4U 
Last edited by firechickenman; 10-22-2013 at 02:00 PM. |
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#9
10-23-2013, 10:50 PM
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What engine? Trans , rear gear, converter? Is this a street car? Hp level? All out race?
Once you answer these question, then it's time to pick the headers. I like the fit of the headman headers. I also like the tube size options. The Mad Dog headers are built well, not sure on the fit. Good luck. |
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#10
10-23-2013, 10:59 PM
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Another vote for Mad Dogs. I've had 3 sets, great headers. Mark is awesome to deal with.
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Darin '64 Bonneville Wagon (sold) 69 Lemans-All motor (sold) 9.81 @ 136.39MPH |
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