- GMC V8 engine
GMC generally shared engines with other General Motors divisions. But like their straight-6, GMC did have its own
V8 .Non-GMC engines
Pontiac
Prior to developing their own engines, GMC used the
Chevrolet Straight-6 engine andPontiac V8 engine . They used the Pontiac 287 in³ (4.7 L) for1955 and 316 in³ (5.2 L) in1956 , but advertised the engines as the "GMC 288" and "GMC 316". They used Pontiac's 347 in³ (5.7 L) in1957 . For1958 and1959 , GMC reduced the bore of Pontiac's 370 in³ (6.1 L) to 3.875 in (98.4 mm), resulting in a displacement of 336 in³ (5.5 L). InCanada , however, GMC used theChevrolet Small-Block engine rather than the Pontiac.Chevrolet Small-Block
From
1955 through1983 , GMC shared Chevrolet's small-block V8. This came in 265, 283, 305, 327, 350, and 400 in³ (4.3, 4.6, 5.0, 5.4, 5.7, and 6.6 L) sizes.Chevrolet Big-Block
GMC also shared Chevrolet's big-block from
1968 through1976 . The company used the 366, 396, 402, 427, and 454 in³ (6.0, 6.5, 6.6, 7.0, and 7.4 L) versions.GMC engines
336
GMC's own V8 was the 336 in³ (5.5 L) OHV/
pushrod engine . It used a 3.875 in (98.4 mm) bore and was produced only in1958 and1959 .While both the '58 and '59 GMC V8 engines were advertised as 336 in³ (5.5 L), the '58 version was based on the Pontiac 370 in³, but with a smaller 3.875" bore giving a 336.1 in³. The '59 version was based on Pontiac's 389 in³, but with a smaller 3.78" bore giving 336.9 in³.
637
An unusual 637 in³ (10.4 L) 60°
V8 was based on GMC's V6 design.ee also
*
GMC Straight-6 engine
*GMC V6 engine
*List of GM engines
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