1972 340 Heat Riser thermal coil spring and anti-rattle spring

[Duster256]

I'm about to pull the trigger on buying a set of 1972 exhaust manifolds for my 340, part nos. 3418623 (passenger side) and 3614368 (driver side). The passenger side heat riser has the flapper, shaft and counterweight but is missing the thermostat coil spring and anti-rattle spring. I know that complete heat riser replacement kits are available but have not been able to find just the 2 springs I will need. Anyone know of a source for just the springs? Also, it looks like both springs are the same for 318 and 340? Or do I need to get the replacement kit? Your help is appreciated. Thanks FABO nation.

 

[toolmanmike]

Place a parts wanted ad for them. I haven't seen them available aftermarket except in the kit unless you can look up the part number and stumble across some NOS. Place an ad.

 

[Duster256]

Place a parts wanted ad for them. I haven't seen them available aftermarket except in the kit unless you can look up the part number and stumble across some NOS. Place an ad.

tx Mike