Updated July 2023

_{Saab Two Stroke Engine Block & Head and Casting Numbers & “How to ID” Chart,} 

707706 Block Cast#, 750CC, Std, 66MM, Mixer, Green, Head #S707753

_{All 750cc blocks have a casting that shows the year of Production.
Engine used in all 93’s built from 1955 through 1960 93A, 93B, 93F, except GT cars. Engine has eight head bolts and the water goose neck is part of the cylinder head. Rated at 38 HP and was painted Light Grass green.
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_{713005 Block Cast#, 750CC, GT, Mixer, Red, Head Cast #713004
or GT-211}

_{Engine used in 750 GT cars starting in 1958 in the 93B with a three speed transmission. In the 93F and 96 750 GT cars,a four speed transmission was installed. Engine was also used in 1961 & 1962 96 GT 750 cars. Water gooseneck is bolted to head (separate part). The very early 750 GT’s were 750 standard blocks that were pulled of the line and hand ported and polished. The casting number was ground off and a new number was stamped in (GT-211). In late 1958 or 1959 a new block was cast with it’s own number and porting already done, only polishing had to be done by hand. All GT 750’s came with round weight crankshafts. An optional 2-barrel carb Solex P44-PII and tuned exhaust was also available. Horsepower with the standard carb was 48, with the 2-barrel and tuned exhaust up to 57.5 horsepower and painted red.
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_{8 bolt, 850CC, 70MM, Std, Mixer, Block Cast#709476 Head Cast#21 (at least block & head are Goran Dalhen’s is)}

_{This was the first 850 built. It was used in 1960 for the first 100 or so of the 95’s with 93b & 93f front ends. It had EIGHT head bolts. The bolts toward the end of the head were wider spread than the ones in the center. Rare, I saw one in Sweden 2007 at Goran Dahlens of 1960 95 serial #40 or #42?
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_{709484 Block#, 850CC, Std, Mixer, Beige/Blue, Head Cast# 709483}

_{This engine was used in the 95 & 96 cars except the GT’s from 1961-1964. Engine has twelve head bolts and one carb. The early ones were painted beige the later ones blue. 42 horsepower.
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_{716503 Block#, 850CC, GT, Injected, Red, Head Cast# 716508(9)}

_{Used in the 850 GT in 1963 & 1964. Has twelve head bolts and oil injection and triple carb with independent idle controls. Rated at 57 horsepower and painted red. Has single feed #2 rod bearings with one half moon cut-out for oil slinger. Can use dual feed crank by grinding half moon relief area into block and cover for oil slinger.
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_{731005 Block#, 850CC, Std 1 carb, Mixer, Dark Green, Head #7310028}

_{This engine was in the 1965 95 & 96. Engine has one carb. and the water pump is bolted to the front of the cylinder head. Also new is the pneumatic fuel pump bolted to the side of cylinder #2. Engine is rated at 44 horsepower and is painted dark green.
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_{731015 Block#, 850CC, Monte Carlo, Injected, Red, Head #7310129}

_{Used in the 1965 Monte Carlo 850, 95 & 96 Special. The Special is a standard 95/96 with the M/C 850 powertrain and dual piston brakes and was fitted with Pirelli 155/15 radial tires with 4 lug bolts. The engine has three carbs mounted on a common throttle shaft. Water pump is on head and the fuel pump on side of the #2 cylinder. Single feed #2 rod bearing. Rated at 60 HP and painted red/orange.
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_{732005 Block#, 850CC, Std 3 Carb, Mixer, Dark Green, Head #7320029}

_{New engine with triple carbs for the standard 95 & 96. New design to minimize fuel detonation through better fuel distribution. Used in 1966 and 1967. Rated at 46 HP and painted dark green.}

_{820CC, 69MM, Shrike, 2 1/2″ to 3″ Yellow Dot on back of engine. Installed in 1968 95 and 96s. This engine had a reduced bore size to drop the displacement below 50 cubic inches to qualify as a utility engine – no smog equipment required in the U.S.A. 44 HP and was painted dark green.
Trick: Save this Block and bore out to standard 70MM and use N.O.S. 70MM standard pistons that are still readily available! Works great!
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_{732045 Block# 850CC, Std LD, Injected, Dark green, Head #7320029
(Dave Baugher says same port timing as the M/C block)
This Lubrication Deluxe was an optional engine for the 1967 95 and 96. It has oil injection like the MC 850 and the GT 850 engines except it has standard porting and low compression with T-shaped counter weights on the crankshaft. Dual feed #2 rod bearing. These engines are often painted red to look like an MC850. BE CAREFUL. Engine produces 46 horsepower and was originally painted dark green.
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_{732515 Block#, 850CC, Monte Carlo, Injected, Red, Head #7310129}

_{Redesigned engine for the 1966-67 Monte Carlo 850 and 1966 95 and 96 Special. The 95 and 96 Specials had front disc brakes, four lug wheels, dual-pipe exhaust systems and a Monte Carlo 850 engine and transmission producing 60 horsepower. This engine was also used in the 1966 and 1967 Sonett II’s where slight polishing and triple side draft carbs on a single throttle shaft allowed for 70 horsepower.
Engines were painted red/orange. Dual feed #2 rod bearing.
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_{The oil injected blocks were made by placing seven steel oil feed tubes into the casting before the block is cast. Make sure the feed holes line up with intended lube points as they sometimes were misaligned from the factory.}

_{A Shrike is bird that eats Beetles. Saab’s 1965/66 sales gimmick for its main competition, the VW Beetle!
Bore to 74mm = 940cc 71mm = 875cc 1mm = about 25cc
73mm = 915cc 70mm = 850cc standard
72mm = 890cc 69mm = 820cc shrike}

I would like to thank Bud Clark for the great work starting this chart years ago. 

I have added my own data through the years to keep this up to date with new material I find.