Years. 842 318/112cc port 1.94-1.5 valve, 19 lbs. 3932441X 400, 80cc, 1.94-1.6 valves, 161/65cc intake port 3774692 283, 58-64 Pass, Power Pack 3789817 327, 62-67 10045434 Pontiac Alm. Oval Port CASTING # YEAR: CID: MAINS: NOTE: 10125327: 92-97: 350: 2 OR 4: LT1/LT4, Corvette blocks normally 4-bolt main: 10168588: 94-96: 265: 2: L99 4.3L, B-Body covers Truck 3767462 327, 62-67, 161/65cc ports 3928495 327, 68 Oval Port 3774684 327, Pass, Truck, 62-64 3964290 400-454 70 3927185 307, 327, 69cc, 69-70 Truck Comments. 3849852 283, 57-67 complete 3774682 283, 327, 60-64 3747460 283, 327, 59-67 LW casting if the casting number off of your heads are not 140 or 772, then these are not the correct heads for your application. 3870064 265, 283, 56-62 1971-76: 333881: 350: 1.72: 1.5001-. 3994026 454 3986136 366-427 68-84 3973487 350, LT1, 75cc, 161-165cc intake port 360HP 3795896 283 Power Pack,63-65 59-61 7700 Vr. 3767465 283, 59-61 3912313 327, 65-67 170cc intake port 3927186 302-350, camel hump, 63cc chambers, 161/65cc ports 340 320/120cc port L-88, ZL-1, LS-6 3964291 402-454 70 bolt holes 3852174 327, 62-64 14101083 350 285HP, or 300HP, Crate Motor, 1.94-1.5, 72º intake 4350 76cc, 162cc intake 3725306 265, 56-57 ex. Sq. 68-76 3931635 250, 68-76 Valves. 76cc, 1.94-1.5, flange VC holes, heavy castings 1st design Number 3927186 is found in the 1969 and 1970 models with the 302 and 350. Corvette 425 HP Sq. Truck Oval Port, 3795896 327, 250HP Corvette, 62-64, 140/60cc ports. port, 66-68 3909802 396-427 67 3912311 327, 67 The LSA heads also used a stronger rotocast A356-T6 alloy. 10185040 Symmetrical port, splayed valve, alm, 45cc, 263cc intake port, 6085 Performer 87-93, center bolt valve cover, 60cc Side 6X and 4X Head Information. Port Alm L-88 3998991 307, 350, 75cc, 72-73, 73 had hard seats It is interesting, I never knew they made a steel casting, looks like they were on 99-00 LQ4 motors. 3917293 307, 327, 75cc, 144/58cc ports 3817682 283, 61-62 14014416 305 HO, 80-85, 58cc, 1.84-1.5, 165/59cc ports, 7 bolt ex. 3748772 283, 58-61 Truck Oval Port 6087 Performer 87, center bolt valve cover, 3876775 283, 327 210 HP Camaro, acc. 3782870 327, 62-37 Many folks want to know where to look for these Chevy engine casting numbers and codes on blocks and cylinder heads so we decided to put these pages with photos together to help you find them. 333882 350-400, 74-80, 76cc, 160/60cc ports 3856206 396 77' L82 Head Casting Number (Read 860 times) Dec 24 th, 2004 at 7:28am: captainmorgan Offline Senior Member Minnesota Shark Minnesota. 3758379 348 Oval Port Find cast numbers. 3789935 283, 57-62 Small Blocks 3998916 350 LT1, 76cc, screw in studs, big valves? 462 is the most-used SBC head casting number out there- at least six different SBC cylinder head casting numbers end in 462, according to 'the books': 3767462 3782462 3814462 3890462 3891462 3990462 Fuelie casting identifiers you can call a dealer or a engine rebuilding shop and give them the numbers. Oval Port Big Blocks, 058 241/86 cc port 4351 67cc, 162cc intake 3755550 283 Corvette, 59, stagger VC bolts 10088113 350, 88-up, Corvette, Alm., angle plug, 58cc, .100 raised 3783949 53-54 235. 67 you never have to worry we can always identify our product. 3917291 302, 327, 350, camel hump, 161/65cc ports 31400002 same 01, except with 72º intake bolts for 87-up 3731262 265, 56, 2x4 carb, Corvette 14014415 267, 305, 80-85 3917292 327-350 Corvette, camel hump, 68 3755537 283, 57-62 343771 366-454 85-88 10033867 Pontiac Alm. Chevy V8 Casting Number Locations (Part 1) We get a number of inquiries regarding casting numbers, engine build dates and engine assembly/suffix codes. 3837739 283, 57 3743096 327, 62-67 GMC truck And many Corvette buyers in 1979 were impressed with the performance â 14,516 L-82 Corvettes were produced for 1979 â the highest number of any year the L-82 was a Corvette option. 4257 76cc, 172cc intake The L48 was the first version of the base 350 V-8. 60-61 3928455 302, 327, 68 port 333882 350-400, 74-80, 76cc, 160/60cc ports. 68-85 Truck HD 3975950 366-427 68-70 990 323/127cc port 14102187 305HO, 87-91, 1.85-1.5, 58cc, 7 bolt ex. Port 14011083 350, 87-up, 64cc, center bolt VC, 72º manifold bolt 10134363 Bowtie, Hi port, alm., 18º, angle plug, 50cc, 250cc intake center bolt VC Jr. Race Heads, Bare, 71cc, 212-267cc port, CNC Machined, 3904392 427 Heads side, 94-95 33417369 350, Gen.I, Crate motor, Hecho En Mexico, 7 bolt ex, 76-84 Truck HD Gen II LT1 angle plug aluminum reverse flow cooling 175/68cc ports, Gen II L99 4.3 Liter V-8, cast iron, reverse flow, GM Fast burn 62 CC 210 CC intake runner angle plug Vortec, Gen III LS1 "GTZ" aluminum 38cc angle plug. 3701481 54 235. 10051182 Small Block V8 2 bolt, Bow Tie block, 3.75-4.30 bore, 1-piece rear seal. 840 326/120cc port 3932441X 350, 80cc, 1.94-1.5 valves, 161/65cc port 14092359 427 Cylinder Head ID. 6071 Performer RPM Same as 6061 exc. Truck Oval Port port We have a good supply of used â186 & â492 heads available with everything from ⦠Continue reading â What are the spec's for this head? port, torquer, Trick Flow Twisted Wedge Alm ( by part number ) 3973493 400, 71, 76cc 1.94/1.50. 3748770 283, 1x4 , 2x4 carbs, FI Vette, X58, stagger VC bolts 3743056 283, 58 3919842 396-427 68-69 3852583 409 3946813 350, 69-70, 138/72cc ports 462624 350-400, 75-86, 161/62cc ports, 7 bolt 60cc, 165cc intake port 3970126 327, 350, 67-70 3854520 283, 327, 62-67, 140/60cc ports 82-86. Oval Port The L48 and L30 share the same heads, block, intake and exhaust manifolds, carburetor and camshaft.
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