69 340 exhaust manifold gaskets

[Confusedcuda]

Was wondering, are the exhaust manifolds gaskets for a small block, the same for a 69 340 with the HP exhaust manifolds ? any recommendations Thanks

 

[toolmanmike]

No, 273/318 gaskets are smaller ports than the 340/360 gaskets.

 

[dadsbee]

NO.. I lost that battle this Winter. Small blocks outer ports are rectangles, 340's are funky shaped...

 

[Professor Fate]

Was wondering, are the exhaust manifolds gaskets for a small block, the same for a 69 340 with the HP exhaust manifolds ? any recommendations Thanks

If, by "small block", you mean the 318/273 engines (340 and 360 are small blocks, too); then no, the port sizes are different- smaller on the 273/318 factory heads.
And the manifolds didn't use gaskets (gaskets are for headers or as a patch for warped manifold surfaces), they bolt directly to the head. The 340 HP manifolds used a stamped metal heat shield on the driver's side. Be prepared for sticker shock...
Mopar P2946105 340 Exhaust Manifold Heat Shield | eBay
Genuine NEW MoPar 1970 Plymouth Dodge 340 LH EXHAUST GASKET HEAT SHIELD 2946105 | eBay
Set of LH exhaust manifold gasket with spark plug wire heat shield and RH side manifold gasket for 1970-73 340 CID engine (moparmall.com)

 

[MOPAROFFICIAL]

Was wondering, are the exhaust manifolds gaskets for a small block, the same for a 69 340 with the HP exhaust manifolds ? any recommendations Thanks

Port size, as Toolman said.
Also the heat shield portion is unique to the 340 manifolds. They were obsolete for yrs if I remember right. I think you can buy them new now.