496 Hydraulic Roller Cam Build - Page 5 - TriFive.com, 1955 Chevy 1956 chevy 1957 Chevy Forum , Talk about your 55 chevy 56 chevy 57 chevy - Belair , 210, 150 sedans , Nomads and Trucks, Research, Free Tech Advice

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Engine Building, Hi Performance Please tell us about your engine builds. What component combos and horsepower output. Let's help each other build better faster engines. Ask or answer questions.

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Old 07-17-2019, 10:25 PM   #41
hotrodg726

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go to harbor freight tools and buy one. when doing this type of build you need to measure everything. that end play should be about .006" on the cam make sure the sprocket it tight when measuring.
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Old 08-28-2019, 03:08 PM   #42
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How is your engine build going? Hotrod has given some real solid advise, hope all is well. Is this rotating assembly internal balanced or external balanced? You are going to have a nice car there when completed

Steve
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Old 08-28-2019, 03:33 PM   #43
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again before you final install the heads, use a used head gasket and put on a head with modeling clay on the valve pocket on the piston. install an intake and exhaust rocker and pushrods on that cylinder and rotate the engine until those to valves have opened and closed 1 time each. then remove the head and measure the thinnest part of the squished clay. this will tell you your actual piston to valve clearance. afterward install the head with new head gasket and finish assembly.
I use resin core wire solder for this procedure - easier than clay to ck thickness and I think gives a more accurate measurement. Use about .125" dia or whatever fits the situation and secure it to piston with super glue - solder removes easily to measure and glue easy to clean off piston.
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Old 09-15-2019, 11:12 AM   #44
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How is your engine build going? Hotrod has given some real solid advise, hope all is well. Is this rotating assembly internal balanced or external balanced? You are going to have a nice car there when completed

Steve
Slow as usual as Iím just a back yard assembler and things started getting technical with proper set up. My short block (external balance) was already assembled so that eliminated a lot of the hard work but it came to a point where I didnít have the right tools or knowledge to degree the cam, correct valve train geometry, piston to valve clearance, etc.
I ended up calling the machinists Buford that changed out my valve springs on my heads. He and his neighbor Clyde came over with their well used tools, both in their 70ís and they helped me with the final assembly.
It was determined most of my rocker arm studs on my Brodix heads were warped, apparently it is common when you buy complete assembled heads that they use off-shore, cheap studs. Summit Racing has always been helpful with returns or issues however, these new heads was purchased two years back so they could only refer me to Brodix.
Contacting Brodix was a joke, upon contacting them arepresentative said ďwas the studs bent during shipping,Ē they was not willing to accept responsibility for installing cheap parts on their heads. After some email contact same deal, they stopped responding. Shame on you Brodix as I paid a lot for these heads.
Anyhow Clyde was able to let me know what stud was needed and I ordered the correct ARP studs to replace the junk that Brodix installed. We also found out that the exhaust push rods was the wrong length and the correct ones was also ordered.
Iím glad I had their guidance with the final assembly. I sure do feel better about it, was stressing for awhile. In a few weeks Iíll be installing the engine, meanwhile need to address my leaking transmission and rear end.

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Old 10-06-2019, 11:40 AM   #45
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Sounds like you have it sorted out, I feel you are going to be happy with your new power plant in the end, rocker arm geometry is a big deal with BBC good thing you and your friends figured out the studs and pushrod lengths. Keep us up dated when you fire that engine up.

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