ZZ3 Chevy engine question
#1
ZZ3 Chevy engine question
Sorry this is a little off the forum, but ZZ3's could be used in a smaller boat. A lot of you folks on the board have hot rods, is anyone running an over - the - counter Chevy ZZ3 smallblock? This is the forged steel connecting rod version of the ZZ4.
The question is, what spark plugs are you running?
The question is, what spark plugs are you running?
__________________
Thanks, Barry
Driver - High's Fuel Your Journey Cigarette Racing Team #598
Thanks, Barry
Driver - High's Fuel Your Journey Cigarette Racing Team #598
#2
Registered
Join Date: Apr 2004
Location: Signal Hill, CA
Posts: 149
Likes: 0
Received 0 Likes
on
0 Posts
Re: ZZ3 Chevy engine question
MY partner ran a pair of ZZ3 's in 27 Hallet ran great for approx 350 hrs until replaced with 383's...never a minutes trouble with the crate motors
KL
KL
#3
Registered
VIP Member
Re: ZZ3 Chevy engine question
Originally Posted by O.C.Barry
Sorry this is a little off the forum, but ZZ3's could be used in a smaller boat. A lot of you folks on the board have hot rods, is anyone running an over - the - counter Chevy ZZ3 smallblock? This is the forged steel connecting rod version of the ZZ4.
The question is, what spark plugs are you running?
The question is, what spark plugs are you running?
#4
Re: ZZ3 Chevy engine question
Originally Posted by Edward R. Cozzi
I try to run NGKs in everything.
__________________
Thanks, Barry
Driver - High's Fuel Your Journey Cigarette Racing Team #598
Thanks, Barry
Driver - High's Fuel Your Journey Cigarette Racing Team #598
#5
Registered
VIP Member
Re: ZZ3 Chevy engine question
Originally Posted by O.C.Barry
Hi Ed - I agree on the NGK's but what I'm looking for here is a plug #.
Tell me what plugs are in there now, or do the heads need 3/8" or 3/4" reach threads.
You can get extended electrodes or not depending on application and usage.
The more info you have, the better I can get you in the right ballpark with the plug that will give you the best service in real-life conditions.
#6
Re: ZZ3 Chevy engine question
Originally Posted by Edward R. Cozzi
Aha! Okay, but I need more info.
Tell me what plugs are in there now, or do the heads need 3/8" or 3/4" reach threads.
You can get extended electrodes or not depending on application and usage.
The more info you have, the better I can get you in the right ballpark with the plug that will give you the best service in real-life conditions.
Tell me what plugs are in there now, or do the heads need 3/8" or 3/4" reach threads.
You can get extended electrodes or not depending on application and usage.
The more info you have, the better I can get you in the right ballpark with the plug that will give you the best service in real-life conditions.
__________________
Thanks, Barry
Driver - High's Fuel Your Journey Cigarette Racing Team #598
Thanks, Barry
Driver - High's Fuel Your Journey Cigarette Racing Team #598
#7
Registered
Join Date: Apr 2001
Location: Annapolis MD
Posts: 1,464
Likes: 0
Received 0 Likes
on
0 Posts
Re: ZZ3 Chevy engine question
Here's the spec section for ZZ-4, including plugs. I don't have a ZZ-3 in my catalog.
-Greg
HO 350 SPECIFICATIONS
Part Number: 24502609 (ZZ4)
Displacement: 350 cu. inches (5.7-liter)
Horsepower: 355 at 5250
Torque: 405 lb-ft at 3500
Bore & Stroke: 4.00" x 3.48"
Compression Ratio: 10:1
Engine Block: Cast iron with 4-bolt intermediate main bearing caps
(P/N10105123)
Crankshaft: Undercut and rolled fillet LT4 nodular iron crankshaft.
Connecting Rods: Steel P/N 10108688
Pistons: High silicon aluminum piston with offset pins (P/N 10159436)
Piston Ring: 14089025
Camshaft: Hydraulic roller tappet (P/N 10185071)
Valve Lift (Intake/Exhaust): .474"/.510"
Duration (Intake/Exhaust): .208/.221 degrees at .050" tappet lift
Valve Lash (Intake/Exhaust): Zero/Zero
Cylinder Heads: Cast aluminum, 58cc chambers, angled spark plugs, screw-in
rocker studs (P/N 12556463)
Intake Valve: (1.94") P/N 10168465 Exhaust Valve: (1.50") P/N 10168514
Valve Springs: LT4 chrome silicon 1.340" diameter (P/N 12551483)
Rocker Arm Ratio: 1.5:1
Distributor: High Energy Ignition with centrifugal and vacuum advance (P/N
1103436)
Initial Spark Setting: 10° BTC @ 800 rpm with a maximum of 32° at 4000
rpm with vacuum advance disconnected.
Spark Plugs: AC FR5LS, 904, or MR43LTS
Maximum Recommended Engine Speed: 5800 rpm
Fuel Requirement: Premium unleaded (92 octane)
-Greg
HO 350 SPECIFICATIONS
Part Number: 24502609 (ZZ4)
Displacement: 350 cu. inches (5.7-liter)
Horsepower: 355 at 5250
Torque: 405 lb-ft at 3500
Bore & Stroke: 4.00" x 3.48"
Compression Ratio: 10:1
Engine Block: Cast iron with 4-bolt intermediate main bearing caps
(P/N10105123)
Crankshaft: Undercut and rolled fillet LT4 nodular iron crankshaft.
Connecting Rods: Steel P/N 10108688
Pistons: High silicon aluminum piston with offset pins (P/N 10159436)
Piston Ring: 14089025
Camshaft: Hydraulic roller tappet (P/N 10185071)
Valve Lift (Intake/Exhaust): .474"/.510"
Duration (Intake/Exhaust): .208/.221 degrees at .050" tappet lift
Valve Lash (Intake/Exhaust): Zero/Zero
Cylinder Heads: Cast aluminum, 58cc chambers, angled spark plugs, screw-in
rocker studs (P/N 12556463)
Intake Valve: (1.94") P/N 10168465 Exhaust Valve: (1.50") P/N 10168514
Valve Springs: LT4 chrome silicon 1.340" diameter (P/N 12551483)
Rocker Arm Ratio: 1.5:1
Distributor: High Energy Ignition with centrifugal and vacuum advance (P/N
1103436)
Initial Spark Setting: 10° BTC @ 800 rpm with a maximum of 32° at 4000
rpm with vacuum advance disconnected.
Spark Plugs: AC FR5LS, 904, or MR43LTS
Maximum Recommended Engine Speed: 5800 rpm
Fuel Requirement: Premium unleaded (92 octane)