Olds 403 heads

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Olds 403 heads

Thread Tools. March 11th, , PM. I finally got my engine together and took it out and it runs great. I still have some timing and carb adjustments to work out but the throttle response is amazing. I've gotta thank cutlass efi for the cam recommendation it pulls good and has a great sounding idle. View Public Profile. March 12th, , AM. March 12th, , PM. What all was done to them? Either way a point higher compression and a much better cam will go along way. Find More Posts by olds and The heads are 7a's. I milled them. The cam is a erson viking. November 23rd, , AM.

Add Thread to del. Also, general oldsmobile build info, make sure your bore and hone is done with a tq plate.

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Read up on cylinder head basics and then learn about what makes ours superior. The cylinder head is located inside an internal combustion engine, where it sits above the cylinders on top of the cylinder block. Together, the cylinders and the cylinder head form the combustion chamber, which is sealed by a head gasket. Valves, fuel injectors, and spark plugs are also often mounted to the cylinder head. A cylinder head is made up of various passageways, which it utilizes to control the combustion process and cool the engine. Internal combustion engines are essentially air pumps that generate power from fossil fuel. These channels also flow the exhaust fumes out of the combustion chamber and to the exhaust valve. Mondello and Edelbrock spent two years collaborating on ideas and design to create these aluminum cylinder heads , which are intended for to and Oldsmobile big-block engines.

Olds 403 heads

These are cast from virgin A aluminum and are heat treated to T6 specs. They are manufactured using their gravity casting process, which ensures a more uniform and robust casting. This provides a strong platform for you to build on. They are designed for high performance, are non-emission, Oldsmobile , , and c. This complete assembled pair of heads includes the following premium ProComp components: ProComp 2. These heads are similar to the Edelbrock Oldsmobile cylinder heads, at a much reduced cost. Anthony — March 11, Bought these for my GMC Motorhome. I had a professional speed shop build the engine. There were no problems at all with them as the arrived.

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Is it worth "ditching" your small valve heads for a pair with a bigger valve considering you're staying within the same year, and not comparing the smog heads to non-smog. My contention would be this. JavaScript is disabled. From my experience, quench is important on these 's. I am also doing a mild build. Last edited by olds and ; November 27th, at PM. October 21st, AM. This site may earn a commission from merchant affiliate links like Ebay, Amazon, and others. I fiddled a bit with Desktop Dyno and seems the best cam for my setup and purposes was the H I am more concerned with torque- this is going in a lb full-size Olds with 2. Quote message in reply?

This article may contain affiliate links where we earn a commission from qualifying purchases. Oldsmobile released the small-block in for the model year.

The extra exhaust duration will carry the RPM past the peak HP area a little better But you do not want to rev it too much. Originally Posted by geeves. Actually the cast replacement with around the 20cc dish will give right around 9 to 1 compression, perfect for an street cruiser. This is just food for thought, everyone It is important that the engine's compression ratio matches the duration of the cam you're selecting. Did the girdle improve things over rpm? March 11th, , PM. Just one time on my olds at rpm did it. Find More Posts by oldsmobiledave. Quote message in reply? Top Bottom. I never ran the stud girdle. Looks like the cam came from Mark. This site may earn a commission from merchant affiliate links like Ebay, Amazon, and others.