Chevy Straight six engine specs bore and stroke sizes
Chevrolet straight six engine were available in many body styles.
Buick Special/Grand Sport
Chevy pickup trucks
Chevy straight six crankshaft strokes.
Straight six Chevrolet crankshafts from these engines will interchange. There are 3 basic crank types.
194/230 (3.25″ stroke)
250 (3.53″ stroke)
292 (4.125″ stroke)
The 292 cubic inch straight six engine has a different conrod journal diameter. When swapping cranks it is recommended both crank & rods be swapped as an assembly.
Some parts that will & wont interchange between Chevy engines
Most chevy sixes run a through bell housing starter motor
Do not interchange with small block or v6 chevys as the pulley on the balancer is integrated with the balancer, bolt on pulleys are used to run air con,power steering & air pumps.
The pushrod length on the chevy six is a length of its own & will not interchange with small or big block Chevrolets
Conrods & rod bearings,
Due to rod length & big end sizes they do not interchange with v8 engines.
rocker arms & roller rockers,
Despite having a ratio very similar the rocker length is not the same
camshafts and timing gear sets,
The 292 chevy six does not interchange with the smaller cube engines.
292 Chevrolet straight six engines had the fuel pump switched to the other side of the engine block, The lobe on the camshaft that operates the fuel pump lever is not in the same location as the smaller cubic inch engines.
crankshaft tunnel alignment is very important when changing rotating assemblies .
This mad straight blown six cylinder powered flamed altered leaving the line…in a case like this “6 in a row is the only way to go”
Cylinder head torque settings on chevy inline 6 cylinder engines should be pulled down in 3 stages.
first stage 40 foot pounds
second stage 60 foot pounds
final stage 85 foot pounds on the 2 front cylinder head bolts & 95 foot pounds on all other head bolts except the front 2.it is recommended to install the water pump before doing up the head bolts
always start in the center & go from left to right & work out towards the ends.
Not Just A Pretty Face
Aussiespeed manufacture a range of performance intake manifolds for many inline engines and there Chevrolet 4 barrel offers a divided centre runner plenum, north south and east west carb mounting, Australian made and shipped world wide.
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