BB Header recommendations - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Rod · 05-05-2004, 11:52 PM

Looking for recommendations for a Big Block header for a 71 2wd with a BB. Requirements are that it have 2 inch pipes and 3 1/2 inch collector so it will breath. Also the truck is lowered so it cant have headers that are lower than the frame rails. Would like headers to run at about frame rail height, trying to run exhaust pipes at that level through the frame crossmembers. Tried 68-74 Chevelle Car BB headers and they didnt work. Car headers had conflict with the frame rail on drivers side, would even come close to being mounted...on the passenger side it had a conflict with the transmission 700R4 housing near the starter.

What are people using, which Brand...model number?
Thanks, Rod

Rod · 05-08-2004, 10:54 AM

Bump to the top. Not a reply.

..what are people using?

SCOTI · 05-08-2004, 11:54 AM

Quote:

Originally Posted by Rod

Looking for recommendations for a Big Block header for a 71 2wd with a BB. Requirements are that it have 2 inch pipes and 3 1/2 inch collector so it will breath. Also the truck is lowered so it cant have headers that are lower than the frame rails. Would like headers to run at about frame rail height, trying to run exhaust pipes at that level through the frame crossmembers. Tried 68-74 Chevelle Car BB headers and they didnt work. Car headers had conflict with the frame rail on drivers side, would even come close to being mounted...on the passenger side it had a conflict with the transmission 700R4 housing near the starter.

What are people using, which Brand...model number?
Thanks, Rod

Sounds like you need custom built headers. I use Sanderson P/N BB3 3/4 length headers on my 468. These are for Chevelles but they fit my frame w/o any problems. The passenger side was close @ the frame (about 1/8") so I did trim 1/8" off the top of the framerail for a total of 1/4" clearance. They have 1 7/8" primary dia tubes w/3" collectors. Not quite what you want, but close (without having to pay $$ for custom made).
http://www.sandersonheaders.com/pagesbypartnum/bb3.htm

Hope this helps your search.

Pont · 05-08-2004, 12:05 PM

Yo Rod, whut up dude!

I used Hooker Comp headers on the BB in my 4x4. They don't seem to hang below the frame but I did have to cut about 3" out of the length of the passenger side collector to clear the t-case. The passenger side upper frame rail also had to be trimmed about 1/4". You might try the passenger car shorty headers, seems like people are running those for the same reason you are giving.

stepside454 · 05-08-2004, 03:03 PM

Ive got Sanderson shortys on my lowered 75 with a 454 , as I recall mine are part #BB4

05-05-2004, 11:52 PM	#1
Rod Join Date: Dec 1999 Location: Eastern - Manitoba Canada, Winnipeg Posts: 4,369	BB Header recommendations Looking for recommendations for a Big Block header for a 71 2wd with a BB. Requirements are that it have 2 inch pipes and 3 1/2 inch collector so it will breath. Also the truck is lowered so it cant have headers that are lower than the frame rails. Would like headers to run at about frame rail height, trying to run exhaust pipes at that level through the frame crossmembers. Tried 68-74 Chevelle Car BB headers and they didnt work. Car headers had conflict with the frame rail on drivers side, would even come close to being mounted...on the passenger side it had a conflict with the transmission 700R4 housing near the starter. What are people using, which Brand...model number? Thanks, Rod __________________ Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife.

05-08-2004, 10:54 AM	#2
Rod Join Date: Dec 1999 Location: Eastern - Manitoba Canada, Winnipeg Posts: 4,369	Bump to the top. Not a reply. ..what are people using? __________________ Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife.

05-08-2004, 12:05 PM	#4
Pont I need another Barley Pop Join Date: Feb 2001 Location: Grants Pass, OR Posts: 1,629	Yo Rod, whut up dude! I used Hooker Comp headers on the BB in my 4x4. They don't seem to hang below the frame but I did have to cut about 3" out of the length of the passenger side collector to clear the t-case. The passenger side upper frame rail also had to be trimmed about 1/4". You might try the passenger car shorty headers, seems like people are running those for the same reason you are giving. __________________ 67 Short Fleet 4x4 04 Honda CRF450R 89 Toyota 4-Runner 34 Ford 2 door sedan - Long term project ---------------------------------------------- There is a very fine line between "hobby" and "mental illness"

05-08-2004, 03:03 PM	#5
stepside454 Registered User Join Date: Nov 2003 Location: st. louis area Posts: 1,551	Ive got Sanderson shortys on my lowered 75 with a 454 , as I recall mine are part #BB4 __________________ 75 GMC C-15 short/step factory 454, lowered

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