bb side pipe header question
Thread Starter
Melting Slicks
Joined: Aug 2000
Posts: 3,077
Likes: 2
From: The Garden Spot of the Garden State
bb side pipe header question
OK...started to work on the install for the hedman sp headers, hooking up to 2.5" sweet thunder chambered exhaust - there is no exhaust pipe from the collector to the chambers because i knew i would have to do some fabrication and i wanted to start from scratch (yeah, right)....first off, i installed the hedman's to the stock side pipes on the other car (small block) and it was simple ('though i cut the exhaust pipes and welded it to the reducer)
..with the big block, the collector seems to be too low by about .5", which is enough to drop the new exhaust pipe below the level of the outer cover..W_T_F??.....the stock exhaust had absolutely no problem :confused:
...any advice?...i called hedman and they said they have no complaints on this header (they probably sold one set last year, mine :rolleyes: )...there is absolutely nothing else wrong on this car (btw, it's the passenger side)....if i can't find a solution, i may have to *gasp* install a short length of flexible exhaust pipe to push the pipe "up"
thx
[Modified by Kid_Again, 3:50 PM 1/20/2004]
[Modified by Kid_Again, 3:50 PM 1/20/2004]
..with the big block, the collector seems to be too low by about .5", which is enough to drop the new exhaust pipe below the level of the outer cover..W_T_F??.....the stock exhaust had absolutely no problem :confused:
...any advice?...i called hedman and they said they have no complaints on this header (they probably sold one set last year, mine :rolleyes: )...there is absolutely nothing else wrong on this car (btw, it's the passenger side)....if i can't find a solution, i may have to *gasp* install a short length of flexible exhaust pipe to push the pipe "up"
thx
[Modified by Kid_Again, 3:50 PM 1/20/2004]
[Modified by Kid_Again, 3:50 PM 1/20/2004]
Safety Car
Joined: Mar 2002
Posts: 3,780
Likes: 442
From: Southwest MI
Re: bb side pipe header question (Kid_Again)
yes, your right, the pipe you attached to the reducer needs to curve (or angle) up a touch to align with the cover, that's the way you have to fit the pipe...... the header and collector has to clear the frame. i have some pic's somewhere, (i'm tore down right now).
BTW, you think that's bad !, you ought to see the stahl setup, much lower collector, but again, no problem at all, you just fit up the pipe to be centered in the cover, no biggie.
BTW, you think that's bad !, you ought to see the stahl setup, much lower collector, but again, no problem at all, you just fit up the pipe to be centered in the cover, no biggie.
Safety Car
Joined: Mar 2002
Posts: 3,780
Likes: 442
From: Southwest MI
Re: bb side pipe header question (66427-450)
Check your e-mail kid.
This is a pic of the right side, see how it angles up to fit the cover?.....if it came off perpendicular to the flange it would be at least ~ 2" low
[Modified by 66427-450, 4:32 PM 1/20/2004]
This is a pic of the right side, see how it angles up to fit the cover?.....if it came off perpendicular to the flange it would be at least ~ 2" low
[Modified by 66427-450, 4:32 PM 1/20/2004]
Race Director
Joined: Aug 2001
Posts: 11,050
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St. Jude Donor '03 & '05
Re: bb side pipe header question (Kid_Again)
I have Hedman headers and I cut the side pipe and welded a 90 degree bend to it and the put a flange on it to bolt to the connector. It dropped the bend out of the side covers by 1/2 also at the front of the covers. When I put my car back together, I'm going to adjust the bend to raise it 1/2".
Thread Starter
Melting Slicks
Joined: Aug 2000
Posts: 3,077
Likes: 2
From: The Garden Spot of the Garden State
Re: bb side pipe header question (66427-450)
66427-450...got the picture, thanks!...btw, the install on your car is flawless :thumbs:
six-T-six....thanks for the help, yeah i might also be doing some "post-installation" adjustments :rolleyes:
....the small block bolted right up, i'll be darned - if i would have started with the big block, i probably wouldn't have had the patience to gp tp car #2
thanks again :seeya:
[Modified by Kid_Again, 7:23 PM 1/20/2004]
six-T-six....thanks for the help, yeah i might also be doing some "post-installation" adjustments :rolleyes:
....the small block bolted right up, i'll be darned - if i would have started with the big block, i probably wouldn't have had the patience to gp tp car #2
thanks again :seeya:
[Modified by Kid_Again, 7:23 PM 1/20/2004]
Pro
Joined: Nov 2000
Posts: 678
Likes: 4
From: wilson,nc,usa
Re: bb side pipe header question (Kid_Again)
Kid,
I installed my headers, Then I cut the sidepipes off and left about a 6-8 inch gap between the header flange and the sidepipe. I then bolted the rear of the pipe up and wired the front of the pipe up so it fit under the cover correctly. I did both sides like this and then drove it to the muffler shop ( my ears were ringing when I got there). I let the shop make the connections from header to pipe with me watching on to make sure it all lined up. They did an excelent job. Cost $50. Jeff
I installed my headers, Then I cut the sidepipes off and left about a 6-8 inch gap between the header flange and the sidepipe. I then bolted the rear of the pipe up and wired the front of the pipe up so it fit under the cover correctly. I did both sides like this and then drove it to the muffler shop ( my ears were ringing when I got there). I let the shop make the connections from header to pipe with me watching on to make sure it all lined up. They did an excelent job. Cost $50. Jeff
Instructor
Joined: Mar 2002
Posts: 111
Likes: 0
From: PA
Re: bb side pipe header question (jeff batchelor)
This is great timming for this post. I just started looking for replacement headers for my 66 bb roadster with side pipes today.
Does anyone know who makes them and have a part number for them.
The last time i put headers on this car was back in 1976.
Thanks
Steve
Does anyone know who makes them and have a part number for them.
The last time i put headers on this car was back in 1976.
Thanks
Steve
Instructor
Joined: Jan 2002
Posts: 143
Likes: 5
From: Jefferson City MO
Re: bb side pipe header question (SCD)
I just bought a ceramic coated set of headers from Summit for my car. Havent installed them yet but they look great. I think they were around $375 and in stock. BTW...they dont show them in their catalog but they have them if you ask. I also looked on Hedman's website and got the part number for this application so that I knew it when I called Summit...I took that suggestion from a Forum member.
Good luck,
Jeff
:steering:
Good luck,
Jeff
:steering:
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Safety Car
Joined: Mar 2002
Posts: 3,780
Likes: 442
From: Southwest MI
Re: bb side pipe header question (SCD)
........... I just started looking for replacement headers for my 66 bb roadster with side pipes today.
Does anyone know who makes them and have a part number for them.
Does anyone know who makes them and have a part number for them.
Headman -- inexpensive ~120$ retail, fit nice, but only come with 1 3/4" tubes, good for your average bb, but a little small for big cubes &/or really hi RPM use.
Stahl -- expensive ~800$ retail, less ground clearance, tighter under the hood, but they do come in 2" and 2 1/8" tubes sizes.
Most guys go with the Headmans, they provide big gains over the manifolds.
Only you can decide if a few extra horsepower the Stahl's allow (over the Headman's) are worth the additional 680$.
In any case, go with 2 1/2" CORE side pipes (made by stainlessworks, or others), the factory design uses a 1 7/8" core pipe and they are significantly more restrictive than std under car exhaust system (i.e., they kill a BB's breathing ability/performance) .
[Modified by 66427-450, 9:43 AM 1/21/2004]
Thread Starter
Melting Slicks
Joined: Aug 2000
Posts: 3,077
Likes: 2
From: The Garden Spot of the Garden State
Re: bb side pipe header question (jeff batchelor)
...you guys have been very helpful, thanks...
jeff...the headman PN is 68210 but please check that before ordering...i'll tell 'ya, if i drove to the muffler shop with open headers, by the time i got there, i'd change my mind and just go with a straigth side exit pipe :D....LOVE that sound
jeff...the headman PN is 68210 but please check that before ordering...i'll tell 'ya, if i drove to the muffler shop with open headers, by the time i got there, i'd change my mind and just go with a straigth side exit pipe :D....LOVE that sound
Instructor
Joined: Apr 2001
Posts: 242
Likes: 3
From: New York, NY USA
Re: bb side pipe header question (66427-450)
From first hand experience I have to disagree with the assessment that "shorty" headers are no better than stock manifolds
I have a 502/502 in a '67 Coupe w/side pipes - originally ran the stock manifolds and pipes - car was choked
Put together an exhaust with Sanderson BB5 headers which have 1 7/8 primaries and 3" collectors - added 3" chambered pipes (2.5" at smallest internal section from Sweet Thunder) and had the connecting pieces made up in 3" - MASSIVE DIFFERENCE IN POWER - Also, exactly the same ground clearance as stock. CHeck the Sanderson site for some tech articles on header length and the impact on torque/power - The shorter primaries move the torque curve up in the RPM range (as opposed to a long tube header) - This works out great for a 502 (and probably most BBs) as you still have tons of low end torque.
And, I did the twenty minute drive to the muffler shop with the open headers (in Long Island - left the house at 7 a.m. so I wouldn't be in traffic)
Have pics if anyone needs 'em - Joe
I have a 502/502 in a '67 Coupe w/side pipes - originally ran the stock manifolds and pipes - car was choked
Put together an exhaust with Sanderson BB5 headers which have 1 7/8 primaries and 3" collectors - added 3" chambered pipes (2.5" at smallest internal section from Sweet Thunder) and had the connecting pieces made up in 3" - MASSIVE DIFFERENCE IN POWER - Also, exactly the same ground clearance as stock. CHeck the Sanderson site for some tech articles on header length and the impact on torque/power - The shorter primaries move the torque curve up in the RPM range (as opposed to a long tube header) - This works out great for a 502 (and probably most BBs) as you still have tons of low end torque.
And, I did the twenty minute drive to the muffler shop with the open headers (in Long Island - left the house at 7 a.m. so I wouldn't be in traffic)
Have pics if anyone needs 'em - Joe
