Anyone have a 348 or 409 in their 60-66 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

502tripower · 02-06-2009, 02:36 PM

Just thought I would bring this up to see if there was any interest. The 348 and the 409 were installed in the 60-65 C60 & C80 trucks and make a great powerplant for the C10 & C20 trucks. The 409 truck blocks are different then the passenger car 409 blocks as they have a relief cut out of the cylinder to lower the compression for the trucks. The passenger car 348 blocks all had the relief cuts in the cylinder. Some of the 348 truck blocks had two relief cuts and these are not desirable at all.

Here is a 409 truck block and a 348 double notch truck block.

02-06-2009, 02:36 PM	#1
502tripower Registered User Join Date: Jan 2008 Location: Satsop, WA Posts: 606	Anyone have a 348 or 409 in their 60-66 Just thought I would bring this up to see if there was any interest. The 348 and the 409 were installed in the 60-65 C60 & C80 trucks and make a great powerplant for the C10 & C20 trucks. The 409 truck blocks are different then the passenger car 409 blocks as they have a relief cut out of the cylinder to lower the compression for the trucks. The passenger car 348 blocks all had the relief cuts in the cylinder. Some of the 348 truck blocks had two relief cuts and these are not desirable at all. Here is a 409 truck block and a 348 double notch truck block. Attached Images __________________ 1963' Chev Custom Cab 502, 67' 435hp 3X2 intake, 9" 4:30 Posi 1961 Impala SS 348/350 4-speed 3:70 Posi 1961 Bel-Air Bubble Top 283 Turboglide soon to have a 348 3X2 4-speed 1950 17' Fairliner twin cockpit barrel stern 312 Y block 1X1 intake Borg Warner 1:1 gear 1957 Fleetform 14' twin cockpit barrel stern 1969 BP-125 Merc 1949 Transitier 3-wheel forklift Crosley 4-Banger 98' FXD 2002 2500HD



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