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BB exhaust manifold ID help... #608722 02/09/10 08:55 AM 02/09/10 08:55 AM
Joined: Mar 2006 Posts: 426 Mid-Atlantic S Scatransit OP mopar
Scatransit OP mopar S Joined: Mar 2006 Posts: 426 Mid-Atlantic	I'm cleaning out the garage and ran across a pair of big block HP exhaust manifolds...L/S PN looks like: 2899879 with a date of 4-24-70...The R/S PN looks like 2843992-2 dated 5-28-67...I was curious about the applications of these as well as the positioning of the heat-riser on the R/S manifold...The weight wheel and t-stat spring face forward as opposed to the outer side... Thanks

Re: BB HP Exhaust manifold heat riser question... [Re: Scatransit] #608723 02/09/10 11:24 AM 02/09/10 11:24 AM
Joined: Dec 2003 Posts: 3,519 Lansing, MI 70gtx440dana master
70gtx440dana master Joined: Dec 2003 Posts: 3,519 Lansing, MI	2899879 is for 70-71 383 Hp and 440 Hp applications. 2843992 is 383 lp, 383 hp & 440 Hp applications 68-69. 70 Road Runner 383-4 4 speed FJ5 & black guts 70 Charger R/T 440-4 4 speed FJ5 & white guts

Re: BB HP Exhaust manifold heat riser question... [Re: 70gtx440dana] #608724 02/09/10 11:34 AM 02/09/10 11:34 AM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	70GTX440Dana do the later (71 up) BB HP ex manifolds flow as good as the much sought after gold standard 68-70 ones? live every 24 hour block of time like it's your last day on earth

Re: BB HP Exhaust manifold heat riser question... [Re: RapidRobert] #608725 02/09/10 12:43 PM 02/09/10 12:43 PM
Joined: Dec 2003 Posts: 3,519 Lansing, MI 70gtx440dana master
70gtx440dana master Joined: Dec 2003 Posts: 3,519 Lansing, MI	Quote: 70GTX440Dana do the later (71 up) BB HP ex manifolds flow as good as the much sought after gold standard 68-70 ones? The 70-71 manifolds are the same. I cannot comment on 72 and later from a flow perspective. However the 72 & 73 HP manifolds that I have seen look nearly the same as the 70-71 style. Last edited by 70gtx440dana; 02/09/10 12:44 PM.

Re: BB HP Exhaust manifold heat riser question... [Re: 70gtx440dana] #608726 02/09/10 12:56 PM 02/09/10 12:56 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	Thank you. yeah if the outlet is the same dia and the general shape the same then w the wall thickness in all likely hood being the same then they should flow prett darn close. live every 24 hour block of time like it's your last day on earth

Re: BB HP Exhaust manifold heat riser question... [Re: RapidRobert] #608727 02/09/10 03:57 PM 02/09/10 03:57 PM
Joined: Aug 2004 Posts: 1,960 Kenosha, Wi G GOLDMYN top fuel
GOLDMYN top fuel G Joined: Aug 2004 Posts: 1,960 Kenosha, Wi	Can I steal this thread for moment with this question: Is there a separate exhaust maifold # for 67 383 4bbl, I have 67 383 2bbl 2532625 & 2532459 and looking at GG white book, they appear the same?..thanks Semper Fi

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