Ford Cleveland Engines: Block Identification Guide
Used on LT1 and L Cast-iron, reverse-flow cooling. Used on LT4. Aluminum, reverse-flow cooling, cc intake ports, 54cc chamber, angle plugs. One thing to keep in mind, the Gen-1 and LT-specific heads are not easily interchangeable. The exhaust ports and exhaust manifold-bolt holes are in the same location. The intake manifold is proprietary to the LT1. However, a standard small-block Chevy intake can be modified to work.
All LT1 engines use center-bolt valve covers. Standard Gen-I small-block Chevy heads position the valves at a degree angle to the deck.
1955-1996 Chevy Small-Block Performance Guide: The Block Manual (Part 1)
Raising the port also necessitated a dedicated intake manifold. The famous double-hump cylinder heads. Casting numbers and X used 1. Aluminum, 58cc, angle plugs, raised runners, d-port exhaust, 1.
This head was sold as a bare casting when new, so machine work will determine finished valve, chamber, and port sizes. Vortec cylinder heads have the casting numbers located near the valve springs. Originally came on hp or hp crate engines. Originally came on crate engines with hp or hp.
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Originally sold bare, so valve sizes are dependent on machining. All ci small-blocks utilize Siamese cylinder walls.
This design caused the cooling system to develop hot spots and that is why the heads have steam holes. The casting number on this head is The Vortec combustion chamber right has a radical heart-shaped design. The older Gen I combustion chamber left is much more open. Casting number is a Vortec head that is available from Chevrolet Performance. It is completely assembled with 1. It can be machined for 2. Build your own custom newsletter with the content you love from Street Muscle, directly to your inbox, absolutely FREE!
Several intermediate displacements appeared over the years, such as the cid that was available with mechanical fuel injection, the cid as well as the numerous cid versions.
Over the years, every American General Motors division, except Saturn, used it and its descendants in their vehicles. In all, over 90,, small-blocks have been built in carbureted and fuel injected forms since Chevrolet Block Identification number locations. Photo from www. Big Block Chevrolet. We will safeguard your e-mail and only send content you request. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. About Us Sponsors Advertising. Cometic Introduces Toyota 5.
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