270 hemi intake manifold

The Jalopy Journal. Terms of Service. Privacy Policy. Log in or Sign up. Atomic Industries www. Register now to get rid of these ads! The H. I'm in the first stages of making my intake for the Here are a few pics of milling out the flanges.

I just milled the carb surface parallel with the rest of the engine and bolted a plate to it for a on a SBC. Haven't used it yet, but it should work. Not optimum flow, but cheap! R PopeFeb 20, Do you have any fore and aft measurments of the on the blower intake? I believe the new Offy comes with a modern carb adapter plate. Trust me when I say there is no market for small Dodge and Desoto parts. Be thankful for the Offy. TR WatersFeb 20, I made up a bunch of these in both. No one wanted them.

JPG File size: For a street package it would easier for 'most' folks to mill the top off of an Offy piece and weld on a mounting plate. As as Tom notes, be thankful for what we have I had one of these a while back. Your work looks very nice. WeaselFeb 21, Making some progress. I made pattern out of cardboard and then transfered them to aluminum plate. I'm going to mig weld them together on the inside and have a good tig welder finish weld the outside, so all my ugly welds will be hid I'll post some pics this weekend.

It's good to see people makeing there own parts when they can, I've tryed to make as much as I could for my car, aside from just being a cheap ass, it's fun to do also.

Making a Blower Intake for my 270 Hemi

Some updated pics. To get everything as true as I could I used some old head gaskets and torqued the heads on the block, then I bolted my intake plates to the heads with an old intake manifold gasket installed.If it has been a long time since you have actually taken a look at any type of brand-new automobiles, then you may be in for a pleasurable surprise when you determine the most recent innovation.

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392 Intake INSTALLED on 5.7L Hemi... FINALLY!!!

View Details. Dodge Hemipoly Main Bearings Set m. Dodge Hemipoly Main Bearings Set Dodge Hemi Exhaust Header Flange.Display Options. Already know the part number you need?

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270 hemi intake manifold

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DODGE Offenhauser Intake Manifolds, Carbureted

Lubricants, Liquids and Adhesives. Part Ships Free. Quick View. Edelbrock High Performance Thermostat, Mechanical, degrees. New Product.Cars by name Trucks and Jeeps. The Hemi was a premium engine, well engineered but costly, because eight-cylinder engines had mainly been used in premium cars. Most cars had four or six cylinders; spending some extra time and money on building a better V8 made sense.

Chrysler had not counted on just how popular the V8 would be, or how much it would drive sales. It took little time for Chrysler to realize their mistake, and the engineers quickly got to work on dropping costs and increasing output.

Their first move was to creating a cheaper and lighter head and valvetrain, for the same engine blocks. To make the change, they put the intake valves on the top of the rocker arm and the exhaust valves on the bottom. The results were lower cost, less weight, and higher production; the cost was a slight loss of efficiency.

Poly head design on left; wedge head design on right.

270 Dodge Hemi

The heads had canted valves in a cross-flow arrangement, gaining some of the advantage of the hemis, but much less expensive to make this design would make a comeback in the 4. They also had low friction valve locks to allow for valve rotation, extending their life. Chrysler claimed the rounded combustion chamber prevented carbon deposits.

The engine was available in both Hemi and Poly form; with four barrel carburetors, the Hemi produced horsepower, and the Poly just Still, the Poly was much cheaper and lighter, and the company could make larger engines to replace the lost power. The bottom of the valve covers were scalloped so the spark plugs were accessible from the top — unlike Ford and Chevrolet V8s, whose owners had to reach under hot exhaust manifolds to get at the spark plugs.

Randy Hicks wrote that the cylinder heads and intake manifolds were interchangeable with any Hemi engines that had the same deck height. Most used a two-barrel carburetor, because the Hemi was the performance engine. As Hemi Andersen wrote, the Poly headed engines were an interim solution, not requiring a new block:.

This is why the Chevy V8 turned out to be so far advanced. Chevrolet came out with a whole new design, which Chrysler sort of finally arrived at with the wedge-head innine years late. The Y block Ford overhead-valve V8 was rubbish when it came out inbut it improved, and the was a pretty good engine in a lot of old stock cars.

The Chrysler poly was a with horsepower and pound-feet of torque. The industry switched in Only two used four-barrel carburetors: the Chrysler and one version of the Dodge The next generation of Chrysler V8 engines were designed to have lower costs and much higher production; they had the same heads, but numerous changes to allow for more automation in the factory.

They, too, had polyspherical heads — but while the blocks were an evolution of the Hemi V8 design, they were not the same. Chrysler and DeSoto had already moved to the new B-engines. Afterit gets a bit blurry. Inthe B engine arrived as a cid and cid. Other Dodges got the cid A-engine from Mound Road. The V8 B-engine was optional across the board in the U. How foolish was that? The first A engine, thewas a heavily modified Poly, but it was still closely related to the original Hemi.

They got the next engine series, the LA, all the way to cid before they had to change the block to create the The early, semi-Hemi Poly has a separate valley cover underneath the intake manifold; A-series engines did not have the separate valley cover, since the intake performed this function.

Both series were similar in outward appearance, despite being from rather different engine families. A mid-year addition of a power package four-barrel carburetor and dual exhaust increased the to horsepower.

270 hemi intake manifold

The latter engine was not part of the original plan.Designated trademarks and brands are the property of their respective owners. Use of this Web site constitutes acceptance of the RacingJunk. Motorsports March Madness on RacingJunk. Check up the matchups here. Classifieds Engine Parts Intake Manifolds. Featured Ads View All. Advanced Search. Filter By:. Has photos. Sort By:. All Ads Private Sellers Dealers. Ported SV2 Edelbrock super victor ll for BBC Weiand Std.

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270 hemi intake manifold

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Making a Blower Intake for my 270 Hemi

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270 hemi intake manifold

Material Type: Steel Color: Red. Flange I.