383 Short Block Engine Build - Open-Box Policy

GMPP 383CI
1. Brodix dual-plane manifold with 4150 carb base fitted with Holley 750-cfm carburetor. Kansas-like torque curves for everyday grunt and upper-rpm flexibility were abundant.
2. The camshaft took advantage of the Brodix 200cc heads. We swapped out the springs, locks, and retainers to avoid valve float and to increase our rev potential. We swapped in Comp springs (PN 26120), locks (PN 795-16), and retainers (PN 613-19) for more open/closed seat pressure.
3. Comp 7.300-inch-long pushrods (PN 7949-16) push the Comp hydraulic rollers we have in place with H-bars. The pushrods are heat-treated chromoly with 0.080-inch wall thickness.
4. As usual, we relied on a Pro-Billet MSD ignition distributor (PN 85551) and wires.
5. Expelling fumes were Hedman 1 3/4 x 3 1/2-inch dyno headers with 18-inch collectors.

If you still aren't convinced...        read full caption If you still aren't convinced about the quality of this 383 short-block, how does a 3.800-inch forged 4340 steel crankshaft sound with four-bolt mains? Rod journals measure in at 2.10 inches, and the mains are standard 350 journals.	To get the camshaft in place,...        read full caption To get the camshaft in place, we removed the surrounding 5/16-inch bolts from the timing cover. Once it was prelubed and installed, Brul locked it in with the cam plate and installed the double-roller timing chain set. It fit beneath the composite GM timing cover without any trouble.	Rollers We couldn't help...        read full caption Rollers We couldn't help but try out Comp's latest line of innovative rocker arms. Ultra-Pro Magnums are cast 8650 chromoly bodies and have hardened roller tips. The new weblike design delivers nearly a 29-percent increase in strength and rigidity. They also feature an oversized trunion and precision-sorted needle bearings for use with high-load valvesprings. Even better, they're rebuildable and come with a lifetime guarantee.
The Brodix top-end kit even...        read full caption The Brodix top-end kit even comes with a Fel-Pro head gasket set (FPP-1003). Brul set them into place and applied thread sealer to each head bolt (supplied with the kit), threaded them down, and torqued them to 65 ft-lb. Note: the gaskets are directional.	Iron Killer The Brodix 200cc...        read full caption Iron Killer The Brodix 200cc cylinder head package is hard to beat. For just $1,950 you get a complete aluminum head package, including a dual-plane manifold, tall valve covers, intake bolts, and all the necessary gaskets.	Intake valves measure 2.020...        read full caption Intake valves measure 2.020 inches, and the exhaust valves come in at 1.600 inches. Brodix will clean and blend the bowls, and we even had the company CNC the combustion chambers (machine port, $227.30 extra) and mill the cylinder heads ($212.10 extra) so we could reach a 58cc combustion chamber volume. Also, the intakes were port-matched for increased performance.