Thread: Common Sbc Myth's

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Originally Posted by Bob W

I turned 8000 on Hydralic Lifters a few years ago. My street car will probably go 7500 RPM.

Bob

Well good for you Bob.
You know there are kids on here and they might believe your story.

Originally Posted by erik erikson

Well good for you Bob.
You know there are kids on here and they might believe your story.

yes bob how many times have you done that

Originally Posted by erik erikson

Well good for you Bob.
You know there are kids on here and they might believe your story.

No "Story".

I don't think you guys believe me, but, a good 283 with the 151 cam and dual four barrels will really scream. Just set them up right and off you go.

My 65 Chevelle 4 door wagon would go 8000 rpm with hyd lifters. Starting line rpm was 7200. Those short stroke engines will really buzz.

I posted pics of my 57 and the wagon in my photos.

Bob.

Originally Posted by Bob W

I don't think you guys believe me, but, a good 283 with the 151 cam and dual four barrels will really scream. Just set them up right and off you go.

My 65 Chevelle 4 door wagon would go 8000 rpm with hyd lifters. Starting line rpm was 7200. Those short stroke engines will really buzz.

I posted pics of my 57 and the wagon in my photos.

Bob.

If you are refering to the 350 horse 327 cam in a 327 it was done making power by approx. 6000 rpm's .In a 283 you might pick up another 300-400 rpm's after that you might spin the engine tighter not making any hp until you will float the valves.

Set the valve lash at zero and they will pull a little more.

My 65 used a Cam Dynamics 431-2 stocker cam to pass tech. Those cams only measured 399 with 300 duration but the dwell was big.

Some of that old stock eliminator stuff from NHRA will really help with street cars.

Bob

Originally Posted by Bob W

Set the valve lash at zero and they will pull a little more.

My 65 used a Cam Dynamics 431-2 stocker cam to pass tech. Those cams only measured 399 with 300 duration but the dwell was big.

Some of that old stock eliminator stuff from NHRA will really help with street cars.

Bob

What are you talking about?
Is the 399 a lift value??
Is the 300 duration a advertised number??
If think you might be confusing "dwell" that is an electrical term often used when setting points with cam terms.

Originally Posted by erik erikson

What are you talking about?
Is the 399 a lift value??
Is the 300 duration a advertised number??
If think you might be confusing "dwell" that is an electrical term often used when setting points with cam terms.

Dwell is the amount of time the valve is fully open. NHRA stocker cams had a bigger dwell to load the cyl with fuel. They measured when the valve started to open and when it closed , the cam profile in the centre was fair game to play with. So the cam opens the valve real quick and holds it open as long as it can then closes real fast so that will still pass tech.

NHRA lists the 431 283 cam at .399 lift and 300 degrees of duration.

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