1997 350 engine

devasa · 03-06-2008, 10:09 PM

I have a 1997 350 5.7 in my chevelle. What is the spark plug gap, is it.035 or .045. What should the timing be, TDC or how many degrees before top dead center. The motor is stock.

NCroadracer · 03-06-2008, 10:38 PM

Here are some specs for your 97 5.7 L.... As for the timing, depends on what you're using for an ignition system.

Engine Mechanical Specifications (5.7 L)
Application
Specification
Metric
English
General Data

Engine Type

V8

Displacement

5.7 L
350 CID

RPO (VIN Code)

L31 (R)

Bore

101.63 mm
4.0012 in

Stroke

88.39 mm
3.480 in

Compression Ratio

9.4:1

Firing Order

1-8-4-3-6-5-7-2

Spark Plug Gap

1.52 mm
0.060 in

Oil Pressure (Minimum at Normal Operating Temperature)

42 kPa at 1,000 RPM
125 kPa at 2,000 RPM
166 kPa at 4,000 RPM
6 psig at 1,000 RPM
18 psig at 2,000 RPM
24 psig at 4,000 RPM

crabtruck · 03-07-2008, 01:22 AM

Hey NC, is that last spec a typo ? My 5.7 specs it at 40psi @ 4,000rpm

NCroadracer · 03-07-2008, 05:49 PM

Quote:

Originally Posted by crabtruck

Hey NC, is that last spec a typo ? My 5.7 specs it at 40psi @ 4,000rpm

No... Those are the Minimum acceptable specs. Seems low, but not a type-o.

Sneakysportsman · 03-12-2008, 07:17 PM

One more thing, make sure your plugs are long enough to go all the way into the combustion chamber. Argued with an idiot @ A*^$3^E Auto about this. Make sure you buy plugs of the proper thread length.

crabtruck · 03-12-2008, 10:18 PM

Quote:

Originally Posted by NCroadracer

No... Those are the Minimum acceptable specs. Seems low, but not a type-o.

Went back to check up on my reading.
Turns out it wasn't a typo
It was a read-o, you were again right.

436'd skylark · 03-13-2008, 07:00 PM

I would run about 10-12 initial, 38 total all in at 2500 or so.

03-06-2008, 10:09 PM	#1
devasa Junior Member Join Date: Mar 2008 Posts: 1	1997 350 engine I have a 1997 350 5.7 in my chevelle. What is the spark plug gap, is it.035 or .045. What should the timing be, TDC or how many degrees before top dead center. The motor is stock.

03-06-2008, 10:38 PM	#2
NCroadracer Senior Member Join Date: Apr 2007 Posts: 108	Here are some specs for your 97 5.7 L.... As for the timing, depends on what you're using for an ignition system. Engine Mechanical Specifications (5.7 L) Application Specification Metric English General Data Engine Type V8 Displacement 5.7 L 350 CID RPO (VIN Code) L31 (R) Bore 101.63 mm 4.0012 in Stroke 88.39 mm 3.480 in Compression Ratio 9.4:1 Firing Order 1-8-4-3-6-5-7-2 Spark Plug Gap 1.52 mm 0.060 in Oil Pressure (Minimum at Normal Operating Temperature) 42 kPa at 1,000 RPM 125 kPa at 2,000 RPM 166 kPa at 4,000 RPM 6 psig at 1,000 RPM 18 psig at 2,000 RPM 24 psig at 4,000 RPM

03-13-2008, 07:00 PM	#7
436'd skylark Senior Member Join Date: Mar 2007 Location: Buffalo Ny Posts: 620	I would run about 10-12 initial, 38 total all in at 2500 or so. __________________ Joe 89 K2500 Chevy, Wee-Oh-five 285K miles, completly rebuilt needs a motor, bad 1962 IHC Scout All Wheel Drive (Scout speak for locking axles) 152 ci, dana everything else

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03-07-2008, 01:22 AM	#3
crabtruck Senior Member Join Date: Jul 2007 Posts: 1,474	Hey NC, is that last spec a typo ? My 5.7 specs it at 40psi @ 4,000rpm

03-12-2008, 07:17 PM	#5
Sneakysportsman Senior Member Join Date: Jun 2007 Posts: 233	One more thing, make sure your plugs are long enough to go all the way into the combustion chamber. Argued with an idiot @ A*^$3^E Auto about this. Make sure you buy plugs of the proper thread length.