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Intake Manifold Casting Numbers
Chevrolet Big Block
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Casting Number
Carb
Year
HP
Notes
3866963 4-Brl 65 375 & 425 Aluminum L-37 396 Holley
3885069 4-Brl 66-68 375 & 425 Aluminum L-78/L-72 396/427 Holley
3886093 4-Brl 67 430/340 Aluminum L-88 427
3894374 3X2 67 435 Aluminum TRI-power 427
3894382 3X2 67 400 Aluminum Oval Port TRI-power 427
3919849 4-Brl 68 390 Aluminum 427 Q-JET L-36 Oval Port
3919850 4-Brl 68 400 Aluminum 427 Oval Port L-68
3919878 4-Brl 68 375& 425 Aluminum L-78/L72 369/427
3933163 4-Brl 68-69 375 & 425 COPO 396/427 l-78/l-89 Aluminum
3933198 4-Brl 68-69 430 L-88/ZL-1 Aluminum 427
3937793 4-Brl 68 390 L-36 Oval Port Aluminum Q-JET
3937795 3X2 69 400 Aluminum TRI-Power L-68 Oval Port 427
3937797 3X2 69 435 Aluminum TRI-Power L-71 427
3947801 4-Brl 69 390 Aluminum L-36 Oval Port Q-JET 427
3963569 4-Brl 70-71 375 & UP L78/L89 & LS-6 Low Rise 396/402 & 454
Chevrolet Small Block
Casting Number
Carb
Year
HP
Notes
3972116 4-Brl 70 NA Service Replacement Aluminum 350
3972361 4-Brl 71 330 Z-28 350 Aluminum
10051103 4-Brl 90 NA Bowtie Aluminum Raised Runner Single plane 350
14014432 4-Brl 81 Not listed Z-28 Aluminum 350
14057053 4-Brl Late Model Not Listed All 305 & 350 Aluminum
3746829 4-Brl 58-64 220 230 & 250 WCFB 283/327
3783244 4-Brl 62-63 250 WCFB 327
3799349 4-Brl 62-64 300 AFB 327
3844459 4-Brl 63-65 300 AFB 327
3872783 4-Brl 66-67 220 275 & 300 HOLLEY 283/327
3872788 4-Brl 66-67 220 275 & 300 HOLLEY 283/327
3875954 4-Brl 66 275 AFB 327
3882858 4-Brl 66 220 AFB 283
3905393 4-Brl 67 275 & 295 Q-JET 327/350
3919803 4-Brl 67-68 250-350 Q-JET 327/350
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