head gaskets-interchange?

[Lou Earle]

Was looking on napa for head gasket- found that a 48 gasket is 38 bucks and the 54 gasket it 46. I thought they were interchangeable am I wrong?

lou

[james curl]

Depends whether they are by pass or internal. The internal with the bulge in the front of the head will work on a by pass engine but not the other way around. If you use an external by pass gasket on an internal by pass engine the gasket will leave the hole in front of the block and head open to atmosphere an the coolant will leak out .

[JohnTeee]

AutoZone

FelPro 7564 C

Dodge, Plymouth 6

281 (218???) Engine 1934-54

230 Engine (except Canadian built) 1949-59

Dodge Truck 6

218, 230 Enging 1937-60

Replaces No. 1326318

$25.99

It's the internal bybass gasket, so is backward compatible with the external bypass engines. Same type I pulled off my engine, which is external bypass.

Cheers!

John

Edited November 6, 2011 by JohnTeee
Added picture

[TodFitch]

A lesson in not always trusting stuff printed on a package to be error free:

No such thing as a 281 L-6 Plymouth engin.

1934 does not use the same head gasket as 1935 and up. The 33 and 34 engines are a bit narrower as they don't have the water distribution tubes and full length water jacket.

AutoZone

FelPro 7564 C

Dodge, Plymouth 6

281 (218???) Engine 1934-54

230 Engine (except Canadian built) 1949-59

Dodge Truck 6

218, 230 Enging 1937-60

Replaces No. 1326318

$25.99

It's the internal bybass gasket, so is backward compatible with the external bypass engines. Same type I pulled off my engine, which is external bypass.

Cheers!

John

[deathbound]

AutoZone

FelPro 7564 C

Dodge, Plymouth 6

281 (218???) Engine 1934-54

230 Engine (except Canadian built) 1949-59

Dodge Truck 6

218, 230 Enging 1937-60

Replaces No. 1326318

$25.99

It's the internal bybass gasket, so is backward compatible with the external bypass engines. Same type I pulled off my engine, which is external bypass.

Cheers!

John

This may be a stupid question, but it lists Dodge, Plymouth 6

281 (218???) Engine 1934-54

230 Engine (except Canadian built) 1949-59......does this include my 1938 Plymouth 201 c.i.?

[jchalk1949]

You may want to view my earlier thread "Felpro Gaskets". I really don't know if I would use Felpro again.

[Plymouthy Adams]

I did read your thread..and as they recommended a spray gasket sealer is kind of an insurance against user prep and to help ensure seal ..often most folks will use an air body file and 120 to clean the surfaces with...this is the reason for the spray recommendation...note also that the company making the gasket has no control over the condition of the block or head in cleaning/prep and even the best gasket can accommodate for only X amount of warpage..a machinist parallel bar and a good feeler gauge can often tell you right up front if there is a chance of non-sealing..a gasket is only needed to prevent leaks on not matched ground surfaces..

[TodFitch]

This may be a stupid question, but it lists Dodge, Plymouth 6

281 (218???) Engine 1934-54

230 Engine (except Canadian built) 1949-59......does this include my 1938 Plymouth 201 c.i.?

The 1935 through 1941 201 engines use the same head gasket as the 1942-48 (and maybe later) 218 Plymouth engines. Part number 1117542 for the head gasket by itself, part number 1064733 for the "Valve Grind Gasket Set" that also includes valve cover gaskets, thermostat housing gasket, etc.

[jchalk1949]

Tim, the block and head on my car were checked and passed muster. The felpro one sided copper gasket still leaked. Maybe someone else would have better luck than I with this gasket. Something to think about, if they made a mistake on their labeling, what else might they made a mistake on?