Cam selection
Drifting
Joined: Dec 2004
Posts: 1,714
Likes: 42
From: Austin Texas
I used the following calculator. You can use it to get the measurements you need and then try different cam grinds to see how it changes your dynamic compression.
https://www.uempistons.com/index.php...tors&type=comp
To get the cylinder head volume - you can try to find a part number on the head and look up the specs or take it to a machine shop and they can "cc" the head to measure it with fluid.
Piston head volume - hope you can see a part number on the piston. the piston design will help by seeing of it has 4 or 2 valve reliefs and if it is dished, flat topped or domed.
Gasket thickness and bore - this will be advertised on the gasket specs and can be a flexible area in the build.
Deck clearance - this is where you bring the piston to TDC and measure the distance from the piston to the top of the block with feeler gauges.
Cylinder bore is 4.030 for yours.
Stroke and Rods are determined by the engine size for the most part. 3.48 and 5.7 in for a 350
https://www.uempistons.com/index.php...tors&type=comp
To get the cylinder head volume - you can try to find a part number on the head and look up the specs or take it to a machine shop and they can "cc" the head to measure it with fluid.
Piston head volume - hope you can see a part number on the piston. the piston design will help by seeing of it has 4 or 2 valve reliefs and if it is dished, flat topped or domed.
Gasket thickness and bore - this will be advertised on the gasket specs and can be a flexible area in the build.
Deck clearance - this is where you bring the piston to TDC and measure the distance from the piston to the top of the block with feeler gauges.
Cylinder bore is 4.030 for yours.
Stroke and Rods are determined by the engine size for the most part. 3.48 and 5.7 in for a 350
Le Mans Master
Joined: May 2007
Posts: 5,025
Likes: 1,120
From: North tonawanda NY
I used the following calculator. You can use it to get the measurements you need and then try different cam grinds to see how it changes your dynamic compression.
https://www.uempistons.com/index.php...tors&type=comp
To get the cylinder head volume - you can try to find a part number on the head and look up the specs or take it to a machine shop and they can "cc" the head to measure it with fluid.
Piston head volume - hope you can see a part number on the piston. the piston design will help by seeing of it has 4 or 2 valve reliefs and if it is dished, flat topped or domed.
Gasket thickness and bore - this will be advertised on the gasket specs and can be a flexible area in the build.
Deck clearance - this is where you bring the piston to TDC and measure the distance from the piston to the top of the block with feeler gauges.
Cylinder bore is 4.030 for yours.
Stroke and Rods are determined by the engine size for the most part. 3.48 and 5.7 in for a 350
https://www.uempistons.com/index.php...tors&type=comp
To get the cylinder head volume - you can try to find a part number on the head and look up the specs or take it to a machine shop and they can "cc" the head to measure it with fluid.
Piston head volume - hope you can see a part number on the piston. the piston design will help by seeing of it has 4 or 2 valve reliefs and if it is dished, flat topped or domed.
Gasket thickness and bore - this will be advertised on the gasket specs and can be a flexible area in the build.
Deck clearance - this is where you bring the piston to TDC and measure the distance from the piston to the top of the block with feeler gauges.
Cylinder bore is 4.030 for yours.
Stroke and Rods are determined by the engine size for the most part. 3.48 and 5.7 in for a 350
My block isn't decked so I just used the thin felpro 1094 shim gaskets to compensate and still have a good quench... no one has yet explained to me why this won't work just as well as long as my pistons are all in the hole the same amount although people often say there's a difference I don't understand how.
Last edited by augiedoggy; Jun 19, 2014 at 10:51 PM.
Le Mans Master
Joined: Apr 2011
Posts: 6,284
Likes: 1,171
From: Hermosa
Post 31 will show you how. The more accurate you are the more you can narrow in on the proper cam for your application.
Put a spark plug in the head and do the same with the head chamber to get it's volume
Safety Car
Joined: Oct 2007
Posts: 3,729
Likes: 267
From: Austin Texas
Corvette of the Year Winner 2017
2016 C3 of Year Finalist
on Cam selection, keep in mind for the corvette the majority of your acc. run off of vacuum,
an aggressive cam will leave you, with very little vacuum to run your HEAT/AC,lights, wipers and such,
when choosing a cam, default to the milder selection, to keep your vacuum acc. working properly. good luck !
an aggressive cam will leave you, with very little vacuum to run your HEAT/AC,lights, wipers and such,
when choosing a cam, default to the milder selection, to keep your vacuum acc. working properly. good luck !
