3989310 ? or 353030? correct for 71-402? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**yote1234** · 05-02-2014, 10:37 AM

can anyone please tell me which is factory correct right hand exhaust manifold #'s. for my 71 1/2 ton truck 402 engine? seen 353030 and 398310?
someone plz help. thx,dave

NoNeck · 05-02-2014, 10:59 AM

Hum... I don't think I have ever seen those casting numbers on a big block. I kept these casting numbers just for my reference. I included the 1972 model year as well because some left over castings might have been used in that year. Maybe they will help?

Casting # Year CID Comments
3965449 1968-72 396
3969854 1969-72 396/402 240, 265, 300, 325, 330, 350, 375, 454 360, 2&4 bolt
6272177 1972 402 210

POP

**yote1234** · 05-02-2014, 11:01 AM

im thinking the 3989310 is camaro-chevelle? not sure?

**yote1234** · 05-02-2014, 11:03 AM

Quote:

Originally Posted by NoNeck

Hum... I don't think I have ever seen those casting numbers on a big block. I kept these casting numbers just for my reference. I included the 1972 model year as well because some left over castings might have been used in that year. Maybe they will help?

Casting # Year CID Comments
3965449 1968-72 396
3969854 1969-72 396/402 240, 265, 300, 325, 330, 350, 375, 454 360, 2&4 bolt
6272177 1972 402 210

POP

im sorry noneck, i mean tthe right exhaust manifold. sorry, dave

**yote1234** · 05-03-2014, 02:46 PM

anyone ???

bruceman1968 · 05-03-2014, 04:29 PM

Dave, From Chevymania http://www.chevymania.com/

3989310 71-72 402 & 454 RH Chevelle, Camaro, Monte Carlo and Passenger

Passenger might include light duty trucks. 10-30 trucks used passenger car blocks. 40 and up trucks used truck blocks. (the deck was taller on a truck block)

Pic of 3989310 (top one)
Name: post.jpg
Views: 741
Size: 62.6 KB

**yote1234** · 05-05-2014, 03:49 PM

as seen in this guys add below i belive these are for cars not trucks? what do you think?

-----------------------------------------------------------------------

1972 402 454 Big Block Chevy Camaro Chevelle Nova Exhaust Manifolds 3989343 3989310

This is a real nice pair of date matched exhaust manifolds for your 1972 Big block Chevy. They are very solid and in great shape. These were used on all 1972 402 454 Camaro Chevelle Nova Impala

bruceman1968 · 05-05-2014, 04:34 PM

I think so to. Here is a page from the 46-72 Chevy truck parts book. It shows 333846 for a 71 396.
Name: post dave.jpg
Views: 670
Size: 71.4 KB

**yote1234** · 05-05-2014, 04:51 PM

now that helps alot! so im looking for a 333846 in non smog?

A BIG THANX..to bruceman68. dave.

bruceman1968 · 05-05-2014, 05:39 PM

Dave, just wanted for you to see the listing for the 72. It has footnotes for the A.I.R. Looks like the 333846 is without A.I.R. and 353030 is with A.I.R.

Name: post2.jpg
Views: 674
Size: 63.9 KB

Name: post2.jpg
Views: 674
Size: 63.9 KB

**yote1234** · 05-05-2014, 05:41 PM

yes sir! seen that. i sure thank you for your help. need a 333846. thx again dave

**yote1234** · 05-05-2014, 05:42 PM

please consider this thread closed.
i need a 333846, dave

05-02-2014, 10:37 AM	#1
yote1234 Senior Member Join Date: Feb 2003 Location: Gold Canyon Arizona Posts: 4,337	3989310 ? or 353030? correct for 71-402? can anyone please tell me which is factory correct right hand exhaust manifold #'s. for my 71 1/2 ton truck 402 engine? seen 353030 and 398310? someone plz help. thx,dave __________________ 1971 K5 CST Blazer 1965 Chevelle Malibu 283 (sadly sold) 1968 Camaro 327 1968 Honda mini-trail z50a #377 1966 uh 1-D Huey Last edited by yote1234; 05-02-2014 at 11:02 AM. Reason: clarification

05-02-2014, 10:59 AM	#2
NoNeck Registered User Join Date: Jan 2011 Location: Chattanooga, TN Posts: 1,108	Re: 3989310 ? or 353030? correct for 71-402? Hum... I don't think I have ever seen those casting numbers on a big block. I kept these casting numbers just for my reference. I included the 1972 model year as well because some left over castings might have been used in that year. Maybe they will help? Casting # Year CID Comments 3965449 1968-72 396 3969854 1969-72 396/402 240, 265, 300, 325, 330, 350, 375, 454 360, 2&4 bolt 6272177 1972 402 210 POP __________________ 2016 RAM Laramie HEMI 1966 Fairlane GT/A, 390/335 HP If it costs you a dollar to make a friend, KEEP THE DOLLAR. If it costs you a friend to make a dollar, KEEP THE FRIEND.

05-02-2014, 11:01 AM	#3
yote1234 Senior Member Join Date: Feb 2003 Location: Gold Canyon Arizona Posts: 4,337	Re: 3989310 ? or 353030? correct for 71-402? im thinking the 3989310 is camaro-chevelle? not sure? __________________ 1971 K5 CST Blazer 1965 Chevelle Malibu 283 (sadly sold) 1968 Camaro 327 1968 Honda mini-trail z50a #377 1966 uh 1-D Huey

05-03-2014, 02:46 PM	#5
yote1234 Senior Member Join Date: Feb 2003 Location: Gold Canyon Arizona Posts: 4,337	Re: 3989310 ? or 353030? correct for 71-402? anyone ??? __________________ 1971 K5 CST Blazer 1965 Chevelle Malibu 283 (sadly sold) 1968 Camaro 327 1968 Honda mini-trail z50a #377 1966 uh 1-D Huey

05-03-2014, 04:29 PM	#6
bruceman1968 Registered User Join Date: Oct 2009 Location: Tampa Bay Posts: 1,549	Re: 3989310 ? or 353030? correct for 71-402? Dave, From Chevymania http://www.chevymania.com/ 3989310 71-72 402 & 454 RH Chevelle, Camaro, Monte Carlo and Passenger Passenger might include light duty trucks. 10-30 trucks used passenger car blocks. 40 and up trucks used truck blocks. (the deck was taller on a truck block) Pic of 3989310 (top one)

05-05-2014, 03:49 PM	#7
yote1234 Senior Member Join Date: Feb 2003 Location: Gold Canyon Arizona Posts: 4,337	Re: 3989310 ? or 353030? correct for 71-402? as seen in this guys add below i belive these are for cars not trucks? what do you think? ----------------------------------------------------------------------- 1972 402 454 Big Block Chevy Camaro Chevelle Nova Exhaust Manifolds 3989343 3989310 This is a real nice pair of date matched exhaust manifolds for your 1972 Big block Chevy. They are very solid and in great shape. These were used on all 1972 402 454 Camaro Chevelle Nova Impala __________________ 1971 K5 CST Blazer 1965 Chevelle Malibu 283 (sadly sold) 1968 Camaro 327 1968 Honda mini-trail z50a #377 1966 uh 1-D Huey

05-05-2014, 04:34 PM	#8
bruceman1968 Registered User Join Date: Oct 2009 Location: Tampa Bay Posts: 1,549	Re: 3989310 ? or 353030? correct for 71-402? I think so to. Here is a page from the 46-72 Chevy truck parts book. It shows 333846 for a 71 396.

05-05-2014, 04:51 PM	#9
yote1234 Senior Member Join Date: Feb 2003 Location: Gold Canyon Arizona Posts: 4,337	Re: 3989310 ? or 353030? correct for 71-402? now that helps alot! so im looking for a 333846 in non smog? A BIG THANX..to bruceman68. dave. __________________ 1971 K5 CST Blazer 1965 Chevelle Malibu 283 (sadly sold) 1968 Camaro 327 1968 Honda mini-trail z50a #377 1966 uh 1-D Huey

05-05-2014, 05:39 PM	#10
bruceman1968 Registered User Join Date: Oct 2009 Location: Tampa Bay Posts: 1,549	Re: 3989310 ? or 353030? correct for 71-402? Dave, just wanted for you to see the listing for the 72. It has footnotes for the A.I.R. Looks like the 333846 is without A.I.R. and 353030 is with A.I.R.

05-05-2014, 05:41 PM	#11
yote1234 Senior Member Join Date: Feb 2003 Location: Gold Canyon Arizona Posts: 4,337	Re: 3989310 ? or 353030? correct for 71-402? yes sir! seen that. i sure thank you for your help. need a 333846. thx again dave __________________ 1971 K5 CST Blazer 1965 Chevelle Malibu 283 (sadly sold) 1968 Camaro 327 1968 Honda mini-trail z50a #377 1966 uh 1-D Huey

05-05-2014, 05:42 PM	#12
yote1234 Senior Member Join Date: Feb 2003 Location: Gold Canyon Arizona Posts: 4,337	Re: 3989310 ? or 353030? correct for 71-402? please consider this thread closed. i need a 333846, dave __________________ 1971 K5 CST Blazer 1965 Chevelle Malibu 283 (sadly sold) 1968 Camaro 327 1968 Honda mini-trail z50a #377 1966 uh 1-D Huey



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.