http://3800wiki.com/ 2026-04-03T21:52:04+00:00 http://3800wiki.com/ http://3800wiki.com/lib/exe/fetch.php?media=wiki:favicon.ico text/html 2020-03-30T18:12:05+00:00 Anonymous (anonymous@undisclosed.example.com) http://3800wiki.com/doku.php?id=engine_details:accessories&rev=1585591925&do=diff Accessories text/html 2020-04-14T17:07:12+00:00 Anonymous (anonymous@undisclosed.example.com) http://3800wiki.com/doku.php?id=engine_details:balancers&rev=1586884032&do=diff Balancers There were 3 main harmonic balancer designs used on the 3800 L67/L32 Balancer The L67 balancer has 2 sets of belt ribs on it since the supercharger was driven by its own dedicated belt. This extra belt required a longer balancer to allow for it. text/html 2020-04-13T14:51:37+00:00 Anonymous (anonymous@undisclosed.example.com) http://3800wiki.com/doku.php?id=engine_details:blocks&rev=1586789497&do=diff External Specs This page will focus on the engine block details themselves Differences in blocks All series 2 and series 3 engines share the exact same block. The only real difference is the stamping on the blocks. It doesn't matter if the engine was supercharged, naturally aspirated, or if it was in an f-body car. You can use any heads or any external parts you'd like to on any block. text/html 2020-03-30T18:11:32+00:00 Anonymous (anonymous@undisclosed.example.com) http://3800wiki.com/doku.php?id=engine_details:brackets&rev=1585591892&do=diff Brackets text/html 2020-04-13T14:44:27+00:00 Anonymous (anonymous@undisclosed.example.com) http://3800wiki.com/doku.php?id=engine_details:cams_and_timing&rev=1586789067&do=diff Camshafts and Cam Timing The series 2 and 3 motors all share the same camshaft, however the naturally aspirated motors and supercharged motors have different cam timings set in the cam sprocket. Here is an image of an L67 cam sprocket laid on top of an l36 cam sprocket: text/html 2020-04-13T15:36:37+00:00 Anonymous (anonymous@undisclosed.example.com) http://3800wiki.com/doku.php?id=engine_details:engine_internals&rev=1586792197&do=diff Internal Details Basic Details Since we know that the engine blocks between all of the series 2 and series 3 3800's are largely identical we can forget about that and focus on the internal components where a lot of the differences lie. Valvetrain text/html 2020-04-14T18:37:48+00:00 Anonymous (anonymous@undisclosed.example.com) http://3800wiki.com/doku.php?id=engine_details:exhaust_manifolds&rev=1586889468&do=diff Exhaust Manifolds Front Wheel Drive Vehicles Exhaust manifolds were the same for all series 2 and 3 front wheel drive 3800's. The stock manifolds are somewhat restrictive in factory form, however the rest of the exhaust flows fairly well. F-body text/html 2023-10-30T23:27:51+00:00 Anonymous (anonymous@undisclosed.example.com) http://3800wiki.com/doku.php?id=engine_details:fasteners&rev=1698708471&do=diff 3800 Series 2/3 engine bolt sizes Block and Timing Cover Location Thread Size, Length, and countMain bearing cross-boltsM8x1.25 @ 50mm (6x) Oil pan to block1/4-20 @ 1“ (20x) Timing cover to block bolts5/16-18 @ 3.125” (6) - - @1.5“ (4) A/C bracket and RWD Motor mount bolts text/html 2020-03-30T18:12:51+00:00 Anonymous (anonymous@undisclosed.example.com) http://3800wiki.com/doku.php?id=engine_details:flywheels_flexplates&rev=1585591971&do=diff Flywheels and Flexplates text/html 2020-03-30T18:10:36+00:00 Anonymous (anonymous@undisclosed.example.com) http://3800wiki.com/doku.php?id=engine_details:fuel_rails&rev=1585591836&do=diff Fuel Rails text/html 2021-09-03T21:39:01+00:00 Anonymous (anonymous@undisclosed.example.com) http://3800wiki.com/doku.php?id=engine_details:generalspecs&rev=1630705141&do=diff General Mechanical Specifications All specs shown below have been pulled from a 98 Camaro service manual. L67 details will be checked and added later. General specifications Lubrication System text/html 2020-04-14T16:50:45+00:00 Anonymous (anonymous@undisclosed.example.com) http://3800wiki.com/doku.php?id=engine_details:heads&rev=1586883045&do=diff Heads Supercharged vs Naturally-Aspirated heads The most significant differences in OEM heads is the difference between naturally-aspirated (L36/L26) heads and supercharged (L67/L32) heads. Supercharged heads have injector ports located in the intake runners inside the head itself. However, naturally-aspirated heads have no injector ports in the heads because they are located in the intake manifold for these heads. text/html 2020-04-14T17:30:16+00:00 Anonymous (anonymous@undisclosed.example.com) http://3800wiki.com/doku.php?id=engine_details:intake_manifolds&rev=1586885416&do=diff Intake Manifolds Naturally-Aspirated Intake Manifolds L36 and L26 Front-Wheel Drive L36 and L26 engines both received the same lower intake manifold, however the upper intake manifold/plenum is slightly different between them. Below is an image of the lower intake for both of these: text/html 2020-03-28T23:23:08+00:00 Anonymous (anonymous@undisclosed.example.com) http://3800wiki.com/doku.php?id=engine_details:o-rings&rev=1585437788&do=diff O-ring Information Coolant elbows 3x of size 115: 11/16“ ID, 7/8” OD, 3/32“ cross section GM p/n: 25537068 1x of size 117: 13/16” ID, 1“ OD, 3/32” cross section GM p/n: 24502846 text/html 2020-04-14T16:57:00+00:00 Anonymous (anonymous@undisclosed.example.com) http://3800wiki.com/doku.php?id=engine_details:oil_pans&rev=1586883420&do=diff Oil Pans Early 3800's were all shipped with stamped steel oil pans. All steel oil pans in front-wheel drive cars were largely the same. The rear-wheel drive cars (97-02 f-body's) were shipped with a slightly different oil pan with a drain plug located towards the rear of the engine. text/html 2020-04-14T16:34:38+00:00 Anonymous (anonymous@undisclosed.example.com) http://3800wiki.com/doku.php?id=engine_details:rockers&rev=1586882078&do=diff Rockers All series 2 and series 3 engines came equipped with 1.6 ratio rockers from the factory. These rockers are not roller rockers so the point where they contact the valve is solid metal. Because they are a friction contact rocker they will cause the valve to open with slightly more lift while the valve is being pushed. This is because of the geometry of the contact point, as the rocker rotates downard, the contact point for the valve is moved further along the rocker to cause the stock ro… text/html 2020-03-30T18:13:39+00:00 Anonymous (anonymous@undisclosed.example.com) http://3800wiki.com/doku.php?id=engine_details:sensors&rev=1585592019&do=diff Sensors text/html 2020-04-14T18:32:55+00:00 Anonymous (anonymous@undisclosed.example.com) http://3800wiki.com/doku.php?id=engine_details:superchargers&rev=1586889175&do=diff Superchargers Series 1 (L67) 1993-1995 Series 1 L67 motors were equipped with an Eaton M62 supercharger. These superchargers were 62 cubic inches in volume (1.016 liters). Series 2 (L67) Series 2 L67 engines were equipped with a generation 3 Eaton M90 supercharger. The M90 is a 90 cubic inch supercharger (1.47 liters) in displacement. On the L67 it was fitted with a 3.8 text/html 2020-03-30T18:13:22+00:00 Anonymous (anonymous@undisclosed.example.com) http://3800wiki.com/doku.php?id=engine_details:thermostat_housings&rev=1585592002&do=diff Thermostat Housings text/html 2020-03-30T18:10:19+00:00 Anonymous (anonymous@undisclosed.example.com) http://3800wiki.com/doku.php?id=engine_details:throttle_body&rev=1585591819&do=diff Throttle Bodies text/html 2020-05-07T18:06:48+00:00 Anonymous (anonymous@undisclosed.example.com) http://3800wiki.com/doku.php?id=engine_details:torque_specs&rev=1588874808&do=diff Torque Specs Bolt DetailsInitial TorqueAdditional Torque Accelerator Control Cable Bracket Bolt16 Nm (12 ft. lbs.) Balance Shaft Driven Gear Bolt22 Nm (16 ft. lbs.)70?Nm (70?ft. lbs.) Balance Shaft Retainer Bolt30 Nm (22 ft. lbs.) Camshaft Position Sensor text/html 2020-04-29T20:00:51+00:00 Anonymous (anonymous@undisclosed.example.com) http://3800wiki.com/doku.php?id=engine_details:valve_covers&rev=1588190451&do=diff Valve Covers Supercharged and naturally-aspirated engines have slightly different valve covers to account for the injector bosses located in the heads or the lack thereof. L67 valve covers Below is an image of the L67 valve covers. L32 valve covers would be the same design.