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Old 11-13-2008, 06:44 PM
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Identifying Chevy or Pontiac Engine.

I got a 1978 Firebird a couple of weeks ago.

It needs restoration (interior, paint etc.) .


My information from the previous owner is that the engine was swapped
for a 350 from a Suburban. (four bolt)

The discription is:
The engine is painted blue (May not mean anything.).
The dipstick for the oil is at the drivers side rear of the block at
the firewall. There is no oil filler other than the valve cover oil
fill on the passenger side..
It has a four barrel Quadrajet.
HEI ignition.
Automatic transmission.
Looks like Trans-Am steering wheel and silver dash panel, gauges.
Rear spoiler.


The engine sounds good and runs strong.


I want to verify that a swap did indeed occur so I can buy parts that
will fit that particular engine (New manifold, headers, etc.).


My question is, is there a way to absolutely identify the motor (Chevy
or Pontiac) without pulling it by looking at it?
Is there any identifying numbers for maker and where would they be?


Thanks in advance for any help.


Josh

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Old 11-13-2008, 08:42 PM
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Old 11-13-2008, 08:50 PM
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Quote:
Originally Posted by joshua1954

My question is, is there a way to absolutely identify the motor (Chevy
or Pontiac) without pulling it by looking at it?
Is there any identifying numbers for maker and where would they be?


Thanks in advance for any help.


Josh
The easy way is to simply look at the intake manifold. Chevy intakes also seal the lifter valley in one piece. Pontiac intakes are raised above a sheet metal valley cover.
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Old 11-13-2008, 09:18 PM
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Quote:
Originally Posted by Rob Keller
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R
I'll try to get one.
Thanks..
Josh
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Old 11-13-2008, 10:00 PM
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poncho engine
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Old 11-13-2008, 10:08 PM
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Quote:
Originally Posted by joshua1954
I got a 1978 Firebird a couple of weeks ago.

It needs restoration (interior, paint etc.) .


My information from the previous owner is that the engine was swapped
for a 350 from a Suburban. (four bolt)

The discription is:
The engine is painted blue (May not mean anything.).
The dipstick for the oil is at the drivers side rear of the block at
the firewall. There is no oil filler other than the valve cover oil
fill on the passenger side..
It has a four barrel Quadrajet.
HEI ignition.
Automatic transmission.
Looks like Trans-Am steering wheel and silver dash panel, gauges.
Rear spoiler.


The engine sounds good and runs strong.


I want to verify that a swap did indeed occur so I can buy parts that
will fit that particular engine (New manifold, headers, etc.).


My question is, is there a way to absolutely identify the motor (Chevy
or Pontiac) without pulling it by looking at it?
Is there any identifying numbers for maker and where would they be?


Thanks in advance for any help.


Josh
Pontiac starter on left, water pump bolts to timing chain cover and distributor turns counter clockwise
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Old 11-13-2008, 11:35 PM
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Quote:
Originally Posted by 1930u
Pontiac starter on left, water pump bolts to timing chain cover and distributor turns counter clockwise
The starter is on the passenger side.

Left as your facing engine?
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Old 11-14-2008, 07:19 AM
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Rule of thumb (as it was taught to me in VoTech) left and right is described from sitting in the driver's seat. Passenger side on most American cars is right. Driver's side is left. Starter on passenger (right) side is Chevy.
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Old 11-14-2008, 11:24 AM
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Pontiac:
- oil filter on the passenger side.
- The distributor passes through the block instead of the intake (like a Chevy).
- Fuel pump on driver's side.
- 11 bolts for the water pump which bolts to the timing cover, which then bolts to the front of the engine. Long 5/16" bolt on the driver's side "pulling" the intake against the timing cover.
- PCV valve in the valley pan.
- 3 core plugs on each side instead of the SBC's 2 plugs.
- Engine displacement cast in the block - driver's side front, near one of the core plugs (can see it from the underside).

Those are some of the easiest to check.
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Old 11-14-2008, 12:58 PM
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Quote:
Originally Posted by Brimstone
Pontiac:
- oil filter on the passenger side.
- The distributor passes through the block instead of the intake (like a Chevy).
- Fuel pump on driver's side.
- 11 bolts for the water pump which bolts to the timing cover, which then bolts to the front of the engine. Long 5/16" bolt on the driver's side "pulling" the intake against the timing cover.
- PCV valve in the valley pan.
- 3 core plugs on each side instead of the SBC's 2 plugs.
- Engine displacement cast in the block - driver's side front, near one of the core plugs (can see it from the underside).

Those are some of the easiest to check.
Thanks for the help.
It's a Chevy engine.
Good..lot's of Chevy parts.
Thanks all for your help.
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Old 11-14-2008, 03:03 PM
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Old 11-21-2008, 03:16 PM
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The red motor in the picture is a Pontiac.
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