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6.0L LS Engine Build Sheet - Callies Crank & Rod Specs, Main/Rod Torque Values
Engine build spec sheet from Tyler Crockett Marine Engines for an LS 6.0L: 4.030 bore, 8.7 compression, Callies 3.800 crank and 6.135 rods, rod torque 75 lb-ft.
Part of 2000-2006 Chevrolet Suburban Torque Specs
This is a handwritten engine build specification sheet on a Tyler Crockett Marine Engines form, dated 11-6-12, for customer James Cline, covering a 6.0L LS engine. It records key machining and assembly measurements: a bore size of 4.030", 8.7:1 compression ratio, Total Seal Diamond piston rings with ring end gaps of.022" (top) and.014" (second) plus a standard-tension oil ring, and a deck clearance of +.004" 'in the hole.' The rotating assembly uses a Callies 3.800" crankshaft and Callies Ultra connecting rods with a 6.125" length. Fastener torque specifications are noted: main bolts at 60 ft-lb inner, 50 ft-lb outer, and 20 ft-lb side bolts using moly lubricant, and rod bolts at 75 ft-lb with moly. Main bearing clearances are recorded for all five main journals in a shorthand notation (values in the.0022-.0031" range by superscript). Many fields on the form (piston size, head type, chamber cc, valve sizes, stroke, end play, run out, side clearance, wrist pin clearance) are left blank. A reader can learn the specific torque values and clearances used in this custom LS 6.0L build.
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Frequently asked questions
- What are the main bolt torque specs on this 6.0L LS build sheet?
- Mains torque is listed as 60 ft-lb inner, 50 ft-lb outer, and 20 ft-lb side bolts, using moly lubricant.
- What is the rod bolt torque specification?
- Rod torque is listed as 75 (ft-lb) with moly lubricant, for Callies Ultra connecting rods with a 6.125 length.
- What piston ring end gaps are recorded?
- Top ring .022, second ring .014, with a standard-tension oil ring. The rings are Total Seal - Diamond type.
- What crankshaft and bore size are used in this build?
- A Callies 3.800 crankshaft with a 4.030 bore size, at 8.7 compression.
- What is the deck clearance noted on the sheet?
- Deck clearance is +.004, noted as 'in the hole.'
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