4.3 Balance shaft cam

David Algie

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Nov 10, 2002, 12:00:17 PM11/10/02

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Hello,
I have a '94 S10 with the 4.3 V6 engine. It has the balance shaft. I
would like to change the cam to a little better performance one. I have
noticed that most of the performance cams note that they are not for use
with the balance shaft. I haven't looked inside this engine yet. Can someone
tell me what the difference is with the cam for the balance shaft engine and
the non balance engine? Could I modify a non balance shaft cam to fit in a
balance shaft engine? I would really like to keep the balance shaft, this is
a daily driver I am just trying to improve a bit. Thanks to all,

David Algie.

Sam Roza

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Nov 10, 2002, 1:57:27 PM11/10/02

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Edelbrock makes no mention of the "balance-Shaft".

From Edelbrocks Website:

CHEVROLET 90° V6 4.3L
PERFORMER-PLUS CAMSHAFT KIT
Matching hydraulic roller lifter camshaft for Chevrolet Performer manifold
#3713. Fits 1987 and later engines with OEM hydraulic roller lifters. May be
used with original lifters.

a.. Performer-Plus Camshaft Only #3714*
Use Edelbrock #7801 timing set. DO NOT use stock timing set.

CHEVROLET 90° V6 4.3L
PERFORMER-PLUS CAMSHAFT KIT
Matching hydraulic roller lifter camshaft for Chevrolet Performer manifold
#3713. Fits 1987 and later engines with OEM hydraulic roller lifters. May be
used with original lifters.

b.. Performer-Plus Camshaft Only #3714*
Use Edelbrock #7801 timing set. DO NOT use stock timing set.

Duration at .004 Lift: Intake 272° Exhaust 276° Centerlines
Duration at .050 Lift: Intake 210° Exhaust 214° Lobe Separation: 112°
Lift at Cam: Intake .319 Exhaust .325 Intake Centerline: 107°
Lift at Valve: Intake .479 Exhaust .488
Timing at .050 Lift: Open Close
Intake 2° BTDC 32° ABDC
Exhaust 44° BBDC 10° ATDC

c..
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David Algie

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Nov 10, 2002, 5:53:16 PM11/10/02

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It does say there that you shouldn't use the stock timing set, this may mean
that the stock timing chain/ gear has a balance shaft attachment or
something on it.
David Algie.
"Sam Roza" <SamRoza@Hotmail_nospam_.com> wrote in message
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Sam Roza

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Nov 10, 2002, 6:45:33 PM11/10/02

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Uhh, no.

THat means pay $50 for Edelbrock's timing set, and install that with the new
cam. It's $50, so it's not radically more expensive than the OEM timing set.
It's a strength issue.

Sam

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