76 c10 5.3 build
01-10-2017, 07:31 AM
#1
Teching In
Thread Starter
Join Date: Jun 2016
Location: Arlington, TX
Posts: 0
Likes: 0
Received 0 Likes
on
0 Posts
76 c10 5.3 build In the process of building a 5.3 for my 1976 c10 step side. Plan to have it on a chassis dyno once finished for the tuning. Should be done early spring. Wondering what power I'll be at. Any guesses?
5.3 iron block. 4.8 floating pin pistons on ls2 rods. Crank cut 10/10 with standard oil pump. 02-04 ls6 cam, the one with 0.550 lift. Set of 706 heads CNC ported with chambers matched. 2.000 intake valves and 1.6 exhaust. ls6 springs under stock rockers with trunnion kits. Flow bench shows them about the same flow rate as stock rectangle port heads. Running the late model NNBS truck intake with billet 92mm throttle body and 412 injectors. (50 lb/hr at 58psi) Set of long tube c10 swap headers with 3" collectors through 3" mandrel exhaust and Fowmaster 40 series mufflers.
Rebuilding a 4L80E to go behind it with a CircleD 3200rpm stall converter. 12 bolt diff with stock 3.55 gears till swap is done and I decide if it needs more or less gearing for my liking.
Few extras just because. It will have power steering. A 150amp alternator. Duel electric radiator fans. Running on 93 octane fuel.
Looking forward to real power numbers. So far I have the short block back from the machine shop and I'm putting it together. The 4L80E is in pieces and I need to start rebuilding it. Having no luck finding a wiring harness at a reasonable price so will build my own from scratch.
5.3 iron block. 4.8 floating pin pistons on ls2 rods. Crank cut 10/10 with standard oil pump. 02-04 ls6 cam, the one with 0.550 lift. Set of 706 heads CNC ported with chambers matched. 2.000 intake valves and 1.6 exhaust. ls6 springs under stock rockers with trunnion kits. Flow bench shows them about the same flow rate as stock rectangle port heads. Running the late model NNBS truck intake with billet 92mm throttle body and 412 injectors. (50 lb/hr at 58psi) Set of long tube c10 swap headers with 3" collectors through 3" mandrel exhaust and Fowmaster 40 series mufflers.
Rebuilding a 4L80E to go behind it with a CircleD 3200rpm stall converter. 12 bolt diff with stock 3.55 gears till swap is done and I decide if it needs more or less gearing for my liking.
Few extras just because. It will have power steering. A 150amp alternator. Duel electric radiator fans. Running on 93 octane fuel.
Looking forward to real power numbers. So far I have the short block back from the machine shop and I'm putting it together. The 4L80E is in pieces and I need to start rebuilding it. Having no luck finding a wiring harness at a reasonable price so will build my own from scratch.
