Cobra jet heads 460 ford

There was also the MEL Mercury-Edsel-Lincoln fat block displacing and ci produced froma low-revving luxury car monster mash that ultimately became a popular mill for marine racing applications. The MEL made brute low-revving torque for just about any application, which made it perfect for luxury cars.

Display results as : Posts Topics. Advanced Search. CALL , Lem Evans July 11th , pm. Sponsored content. Which heads? I'm building my first series, a stroked to cu.

Cobra jet heads 460 ford

Earlier this decade, Kaase demonstrated their considerable engine-design talents when they corrected longstanding failings in the original series cylinder heads. For the first time, the series engine exceeded the cfm peak intake flow of the desirable Boss Kaase with Ford designated the new heads the Super Cobra Jet. In the intervening years and with ambitions to expand into broader markets, including the street performance arena, Kaase consolidated the gains made in the SCJ heads and continued to refine them. Now, with peak intake flow ratings of around cfm, the new Kaase P51 variants are available directly from the Kaase factory. Of perhaps greater significance is their superb mid-range flow characteristics see table below. Commendably, Kaase retained the 72 cc combustion chambers, which allow users to run pump fuel. This chamber size also permits experimentation with different compression ratios: employing slightly dished or slightly domed pistons as desired. Importantly, the P51 chambers are fully CNC-machined, and contain larger 2. The standard size exhaust valves are retained.

We had the valves made to our specs. Robert Hoffrichter says:. They have a greater expansion rate than cast or forged so they are installed "loose" to compensate.

Log in. Sign up. Home Forums FFCars. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. Anyway, is there any reason that these heads cannot be used on a with the torker II intake? Does anyone have experience with them?

Log in. Sign up. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. First year of series engine. They will give about This assuming factory type pistons 9. Thermact-air boss and passages not drilled for 49 states emissions. Thermact-air boss is slightly smaller than on newer castings. Like all of the BBF castings the exhaust port needs alot of help.

Cobra jet heads 460 ford

Log in. Sign up. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. I am running a 69 Mustang with Hooker headers, for a 73 Mustang. With mods made to the engine compartment and right frame rail these headers were made to fit snuggly with C9 heads. When I put in a with iron CJ heads the headers did not fit same as they did on the C9 heads but with only prying and slight dinging and 3 or 4" fits" they now inter-change. These headers fit real tight in a real tight space and there is no room for them to move up down or out.

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Ok, maybe I'm exaggerating a little. After two years the project came up for re-bid. The CJ head will use a CJ style intake and headers and will work with no issues on a stock 74 shortblock. This is an older thread, you may not receive a response, and could be reviving an old thread. I've had two FE's and I'm changing to a , with higher power and lower in cost. Tell me what you guys think as I'm a bit stumped on what to do. I know the water temp isn't as accurate as it would be in a closed system, but it does run pretty cool. Display results as : Posts Topics. I have used these springs for years on drag race, oval track, and even the Enginemasters entries. Of course none of the manifolds would fit. I was dead wrong. Kaase P51 flow chart at 28 inches of water reveals exceptional mid-range flow Valve Lift inches Intake cfm Exhaust cfm 0. Jim's also an enthusiast, and has owned and restored many classic vehicles, including an impressive mix of vintage Ford Mustangs. Find true top-dead-center using a dial indicator before you do anything else.

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They are very expensive, and I had to think long and hard about risking a cheaper spring. Similar topics. The run would be made while some of the CJ blocks were partially machined on skids. All were fitted with a strong nodular iron crank with I-beam rods. Author: Jim Smart. We have focused on the and engines with numerous cams and intake manifolds being tested. If lash seems excessive noisy , tighten it up a bit to 0. The spring locators, steel retainers and locks are from Comp Cams. Per Bessing says:. Like Dislike.