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Camaro Super Sport Engines - the 396
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The 396 was the largest production option engine factory installed in the Second Gen Camaro. They all actually displaced 402 cubic inches due to a .030 overbore but were advertised as 396's. The LS6 454 was scheduled as an option but GM management scratched it at the last minute. The 396 would last from 1970 until 1972, after this year, the Super Sport option, along with the big block would become just a memory. Any Camaro with a factory installed 396 would be a Super Sport. In otherwords, the only way to obtain the 396 was to check the Z27 option box, along with the big block option.
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1970 SS396 - L78 375hp (gross) "King of the Hill"
| Casting # | GM P/N | Description | Block | 3969854 | 4 bolt main, suffix codes: CJH, CJL, CKO, CTY | Crankshaft | several | Forged steel | Heads | 3964291 | 109 cc, 2.19/1.88 valves, dome symbol | Cam | 3904366 | 3904362 | symbol: OMO Solid lifter - 0.520 lift, 316(I)/302(E) duration | Pistons | Domed type - yields 11.0:1 compression | Intake | 3963569 | Aluminum, holley | Carb (A/T) | 3969898GM | Holley List 4492, 780cfm , 4150 series - 4BBL | Carb (A/T) | 3969894GP | Holley List 4556, 780cfm , 4150 series - 4BBL w/NB2 (Calif) | Carb (M/T) | 3967477GG | Holley List 4557, 780cfm , 4150 series - 4BBL | Carb (M/T) | 3967479GM | Holley List 4491, 780cfm , 4150 series - 4BBL w/NB2 (Calif) | LH Exhaust | 3909879 | 2.526", Rear Outlet, AIR | RH Exhaust | 3916178 | 2.526", Rear Outlet, AIR | Distributor | 1112000 | single point w/RFI |
Note: This is the only 4 bolt main 396 used in the Camaro.
| Casting # | GM P/N | Description | Block | 3969854 | 2 bolt main, suffix codes: CJH, CJI, CTW, CTX | Crankshaft | various | Forged steel | Heads | 3964290 | 100 cc, 2.06/1.72 valves | Cam | 3904364 | 3904359 | symbol: OM, hydraulic - 0.461(I)/0.480(E) lift, 350I/352E duration | Pistons | Flat w/valve relief - yields 10.25:1 compression | Intake | 3955287 | Iron, Quadrajet | Carb (A/T) | 7040204 | Federal Emissions, 4MV Quadrajet | Carb (A/T) | 7040504 | w/CA Emissions | Carb (M/T) | 7040205 | Federal Emissions | Carb (M/T) | 7040505 | w/CA Emissions | LH Exhaust | 3909879 | 2.526", Rear Outlet, AIR | RH Exhaust | 3916178 | 2.526", Rear Outlet, AIR | Distributor | 1112000 | single point w/vacuum |
| Casting # | GM P/N | Description | Block | 3969854 | 2 bolt main, suffix codes: CLA, CLB, CLC, CLD | Crankshaft | various | Forged steel | Heads | 3993820 | 113 cc, 2.06/1.72 valves | Cam | 3863545 | 3963544 | symbol: M, hydraulic - 0.398(I)/0.430(E) lift, 316I/334E duration | Pistons | Flat w/valve relief - yields 8.5:1 compression | Intake | 3955287 | Carb (A/T) | 7041200 | 4MV Quadrajet | Carb (M/T) | 7041201 | LH Exhaust | 3989343 | 2.526", Rear Outlet, AIR | RH Exhaust | 3989310 | 2.526", Rear Outlet, AIR | Distributor | 1112057 | RFI, single point w/vacuum |
CLC & CLD suffix codes are unverified
| Casting # | GM P/N | Description | Block | 3999290 | 2 bolt main, suffix codes: CLA, CLB, CTA, CTB | Crankshaft | various | Forged steel | Heads | 3999241 | 113 cc, 2.06/1.72 valves | Cam | 3863545 | 3963544 | symbol: M, hydraulic - 0.398(I)/0.430(E) lift, 316I/334E duration | Pistons | Flat w/valve relief - yields 8.5:1 compression | Intake | 6263753 | Carb (A/T) | 7042220 | 4MV Quadrajet | Carb (M/T) | 7042215 | LH Exhaust | 3989343 | 2.526", Rear Outlet, AIR | RH Exhaust | 3989310 | 2.526", Rear Outlet, AIR | Distributor | 1112057 | RFI, single point w/vacuum |
CTx suffix codes are listed w/ AIR. Block 3999290 was used in late 72.
General notes: Alternators unverified. AIR was installed in all cars. It was manditory for California delivered cars, but was typically quickly removed if delivery was to any of the other 49 states. So the exhaust will be equipped for AIR, but often times will be plugged.
Author: MadMike Maciolek
North Georgia Classic Camaro All rights reserved |
