Carb Problem? Spark Plug Diag Holley 750
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Carb Problem? Spark Plug Diag Holley 750
need help have a crate 602 motor using a holley 750...spec #80528
Trying to work out the proper spacing beteween carb and intake. solid runner down center of intake, ran a 1'' moroso with 1/4 '' heat blocker , No power, engine fell on face with rapid acceleration, some backfiring...
pulled spark plugs autolite 103 at 40 cap, cylinder # 1,4,6,7 are all black,electrode and perimeter. 2,3,5,8 the electrode is white, ring around are black
is this a result of the carb? if so any ideas?
Thank YOU !
Trying to work out the proper spacing beteween carb and intake. solid runner down center of intake, ran a 1'' moroso with 1/4 '' heat blocker , No power, engine fell on face with rapid acceleration, some backfiring...
pulled spark plugs autolite 103 at 40 cap, cylinder # 1,4,6,7 are all black,electrode and perimeter. 2,3,5,8 the electrode is white, ring around are black
is this a result of the carb? if so any ideas?
Thank YOU !
Joined: Mar 2000
Posts: 43,187
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Welcome aboard thirdgen.org.
I'll have to admit I have no clue what a "crate 602" engine is. Some details (displacement, cam, heads, etc.) would be nice. Did you mean "502"?
I assume this is a dual-plane intake, since the spark plugs you grouped are every-other in the firing order.
I'll have to admit I have no clue what a "crate 602" engine is. Some details (displacement, cam, heads, etc.) would be nice. Did you mean "502"?
I assume this is a dual-plane intake, since the spark plugs you grouped are every-other in the firing order.
Thread Starter
Junior Member
Joined: Apr 2008
Posts: 3
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Re: Carb Problem? Spark Plug Diag Holley 750
350 Cubic Inches
Cam is Hydraulic Flatt Tappet
----------
350 Cubic Inches
Cam is Hydraulic Flatt Tappet - .435 in take .460 exaust
Head is cast iron 1.94/1.50 62cc
dual plane with vortec cylinder heads
Cam is Hydraulic Flatt Tappet
Welcome aboard thirdgen.org.
I'll have to admit I have no clue what a "crate 602" engine is. Some details (displacement, cam, heads, etc.) would be nice. Did you mean "502"?
I assume this is a dual-plane intake, since the spark plugs you grouped are every-other in the firing order.
I'll have to admit I have no clue what a "crate 602" engine is. Some details (displacement, cam, heads, etc.) would be nice. Did you mean "502"?
I assume this is a dual-plane intake, since the spark plugs you grouped are every-other in the firing order.
350 Cubic Inches
Cam is Hydraulic Flatt Tappet - .435 in take .460 exaust
Head is cast iron 1.94/1.50 62cc
dual plane with vortec cylinder heads
Welcome aboard thirdgen.org.
I'll have to admit I have no clue what a "crate 602" engine is. Some details (displacement, cam, heads, etc.) would be nice. Did you mean "502"?
I assume this is a dual-plane intake, since the spark plugs you grouped are every-other in the firing order.
I'll have to admit I have no clue what a "crate 602" engine is. Some details (displacement, cam, heads, etc.) would be nice. Did you mean "502"?
I assume this is a dual-plane intake, since the spark plugs you grouped are every-other in the firing order.
Last edited by ereninger; Jul 30, 2008 at 06:14 PM. Reason: Automerged Doublepost
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