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Old 01-15-2015, 08:40 AM   #1
billyredneckdipper
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mystery seemingly nonexistent chevy exhaust manifold casting number.

Just took the stock manifold s off for headers and thought i would look up well try to look the manifods up just for the hell of it, well 4hours later NOTHING the only thing i found was s post by a member of the chevelle site stating fhe same problem..casting number 3984040

Whats up with fhis? Rare millon dollar manifold! Doubtfull but hey who knows i doubt md and another person are missreading thw same exsact wromg numbers.

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Old 01-15-2015, 09:33 AM   #2
68350
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Re: mystery seemingly nonexistent chevy exhaust manifold casting number.

That's 3994040 which decodes to a car manifold. Non smog.
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Old 01-15-2015, 09:43 AM   #3
billyredneckdipper
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Re: mystery seemingly nonexistent chevy exhaust manifold casting number.

Im pretty certain its a 8 its shaped differently from the 9 and thethe now break or diffrence at all in the form of. 8 and i ran a marker across it and put a paper on it and sure looks lkke 398 to me amd it came off my 71 c30 with.402 bb
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Old 01-15-2015, 10:56 AM   #4
LockDoc
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Re: mystery seemingly nonexistent chevy exhaust manifold casting number.

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Looks like a 9 to me, the loop is just closed up.

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Old 01-15-2015, 11:56 AM   #5
68350
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Re: mystery seemingly nonexistent chevy exhaust manifold casting number.

The 8 wouldn't have a clean curve on the right side of the digit. I see 399
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68 Chevy CST/10, 50th Anniversary, 327/th400, 373 posi, buckets
68 GMC Shortbox Stepside, 402/th400, Tilt, Tach, Bucket Seats, 3.08 Positraction
69 Chevy Camaro SS, 383, 4 speed, positraction
70 Chevy El Camino SS396, Triple Black, 454/th400, Tach
70 Chevy Shortbox Stepside 4x4, 350/th350, Tilt, Tach, Cab Lights, Bumper Guards, Tow Hooks
70 Chevy 3/4 Longbox, 350/auto, 70k, SURVIVOR
71 Chevy Blazer, CST, 350/auto
71 GMC Sierra K2500, 454, 4 speed, 4.10 posi, 37s
71 Custom/30, Open Road, 350/th400, tilt
72 Chevy Shortbox Fleetside, 496 Stroker/th400, Tilt, Tach, Bucket Seats, 3.42 Posi
72 GMC Sierra Grande 2500. 427/th400, tilt, a/c, tool and stowage, buckets/console, 3.54 posi
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