Anyone had any problems with using Edelbrocks Performer setup? I am using an Edelbrock Performer Intake, Edelbrock Performer Camshaft/lifter kit (2162) and the Edelbrock Valve springs recommended by Edelbrock (5862) for the Performer setup. Heads are Oval Port 3964290 heads, with Summit (SUM-G6930B) Roller Rockers. I put the engine on an Engine Dyno today, after break-in, we started doing a couple of pulls and the valves started floating at @4800 RPM. :confused: What's the Deal?

Well ,mild cam:
Duration at 0.006" Lift: Intake: 292° Exhaust: 302°
Duration at 0.050" Lift: Intake: 218° Exhaust: 228°
Lift at Cam: Intake: 0.295" Exhaust: 0.295"
Lift at Valve: Intake: 0.500" Exhaust: 0.500"
Timing at 0.050" lift: Open Close
Intake: 0° ATDC 38° ABDC
Exhaust: 53° BBDC 5° BTDC
Centerlines: Lobe Separation - 114° Intake Centerline - 109°

Rockers are stock ratio.
Rotators or not ?
Check for coil bind?
Check for retainer to guide/seal interference?
Lash too tight ?

When I set the lash, I spun pushrod between fingers until I felt resistance, then tightened 1/2 turn. That's the correct valve lash settings right?

Only if the lifer is already pumped up.
Should be pumped up now -I'd try resetting the lash first.

Rockers are 1.7

I think 454Regal gets 5000 outa his engine, same cam etc...

Anyone had any problems with using Edelbrocks Performer setup? I am using an Edelbrock Performer Intake, Edelbrock Performer Camshaft/lifter kit (2162) and the Edelbrock Valve springs recommended by Edelbrock (5862) for the Performer setup. Heads are Oval Port 3964290 heads, with Summit (SUM-G6930B) Roller Rockers. I put the engine on an Engine Dyno today, after break-in, we started doing a couple of pulls and the valves started floating at @4800 RPM. :confused: What's the Deal?

Hi Loren, your lucky if you have 100# seat (closed) pressure with those springs at 1.880"?? Have no listing with the rate here on that number! We don't use any Edelbrock springs at all!

This pressure is OK for some SB's, but it's no where near enough for any BB's.

You should be at a minimum of 125#/130# @ 1.880" with a 360#/in (nom.) spring rate.

Not only will you be limited with the RPM range, but valves "bouncing" on the seats will lead to many more issue in short order.

Before you go any further, I would also check to see if any initial damage has started on the lobes already. Try to let the unit idle with the valve covers off and make certain ALL 16 of the pushrods are "spinning". Makes no difference how fast, just so they are rotating! This will show the lobes are still "tapered"!

Thanks, Gary in N.Y.

P.S. Change over to some Comp 911's (or equivalent) if your comfortable with a "single" spring. There are many "dual" spring combo's that will fill the bill also! Comp's 924's (or equivalent) would be fine for the duals! With the cam already broken-in a spring change of this type would be easy!

Good catch on the springs:
#5862 84-96 lbs seat pressure

Hi Loren, your lucky if you have 100# seat (closed) pressure with those springs at 1.880"?? Have no listing with the rate here on that number! We don't use any Edelbrock springs at all!

This pressure is OK for some SB's, but it's no where near enough for any BB's.

You should be at a minimum of 125#/130# @ 1.880" with a 360#/in (nom.) spring rate.

Not only will you be limited with the RPM range, but valves "bouncing" on the seats will lead to many more issue in short order.

Before you go any further, I would also check to see if any initial damage has started on the lobes already. Try to let the unit idle with the valve covers off and make certain ALL 16 of the pushrods are "spinning". Makes no difference how fast, just so they are rotating! This will show the lobes are still "tapered"!

Thanks, Gary in N.Y.

P.S. Change over to some Comp 911's (or equivalent) if your comfortable with a "single" spring. There are many "dual" spring combo's that will fill the bill also! Comp's 924's (or equivalent) would be fine for the duals! With the cam already broken-in a spring change of this type would be easy!
=
Just to add
Never assume because a spring is "recommended" for an application it is correct
It is not always the case, a lot of recommended springs are not going to do what you expect.
Always have the springs checked for pressure & set up properly you cannot just stick them on the heads because they are the "correct part"

Another thing,,
I cannot remember the number times what was in the box was not what was supposed to be so,,,,, NEVER ASSUME ;)

Or as the old saying goes,,,
Measure once,, cut twice,,,, or was that measure twice,,cut once,,,,, :wacko:

=
Or as the old saying goes,,,
Measure once,, cut twice,,,, or was that measure twice,,cut once,,,,, :wacko:
For once, your advice is bad.

I can cut, and cut, and CUT, and CUT;
and it's STILL TOO SHORT.

For once, your advice is bad.

I can cut, and cut, and CUT, and CUT;
and it's STILL TOO SHORT.

:D:D
I remember that as one of my Dad's favorite sayings when we were building a log house many many years ago,, back when men were men & sheep were nervous,,,,
Never forgot it,,
If you screw it up the first time,, no matter how many times you recut,, it will still be screwed up
Of course as I recall the terms used were not "screwed up" :angry:

back when men were men & sheep were nervous,,,,
Men ARE Men, sheep are LYING LITTLE TRAMPS.

Thank you for the info, mark this one up to experience, never trust the print test and verify sounds like the route to go.

Had the shop pull and measure the valve springs today and a couple of them measured as little as 77#'s??? The put in a set of comp springs and now I am sitting at 130#'s seat pressure. We will be running it on the Dyno again on Wednesday, and we will see how it does?

Try to push the sheep over a cliff. When they get to the edge,they back up. No need for tall boots or shin gaurds!