Talk with Comp about using springs that have these specs, but are the same diameter as the spring seats in the stock heads to prevent having to spend money cutting new spring seats. Pay close attention to KB recommendations for top ring end gap. KB135 hyper D-cup pistons, 18cc dish, hung on 5.7 rods.
Heads are 882 casting numbers(Most likely 1.94, I know not the best) 76cc I am looking for torque more than HP at the 3000 RPM range, and on a VERY lean budget.Į 383 balanced kit flat top pistons I bought a 1974 C10 with 54,000 original miles that is great shape. I already bought a used 90 3/4 ton pickup, and 2 O/D trannies later, I want to start with and older truck without a catalytic converter and build something for around $10,000. I want to build the ultimate tow machine without having to buy a new truck for 25-40K. What I am going to do is pull out the 2 barrell 145 HP 350 and Th350 tranny and install a 383 with a TH400 for towing my 25' 4500 lb.travel trailer. Start the engine and bring to break-in rpm.Anyone built a 383 SBC for towing? Anyone have any recomendations? It is going in a 74 Chevy 1/2 ton pickup with a TH400. Slow idle speeds may result in severe cam and lifter wear. Do not allow the engine to run under 2000 rpm for the first 1/2 hour. Coat cam lobes and bottoms of each lifter with MoS2 lube (supplied) to prevent cam lobe and lifter wear from occurring during initial start-up.
Oil/additive must contain Zinc designed for use with flat tappet camshafts. Do not use rotator type valve springs or retainers for this application.
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