'67 BB HEAT RISER WITH SIDE EXHAUST

[Rob A.]

Was a spacer used in place of the heat riser on original side exhaust cars?

[mike cobine]

Re: '67 BB HEAT RISER WITH SIDE EXHAUST

My '67 with side pipes had the heat riser in '74. Possible it was changed, but I doubt it.

[Mike M.]

Re: '67 BB HEAT RISER WITH SIDE EXHAUST

Almost certain the outside exhaust -equipped midyears had a heat riser. check assembly manual to be sure. mike

[John H.]

Re: '67 BB HEAT RISER WITH SIDE EXHAUST

All sidepipe cars (except fuelies) had a heat riser.

[Brian J.]

Re: '67 BB HEAT RISER WITH SIDE EXHAUST

That heat riser part #3887034 is still available from GM.

[Mike M.]

Re: '67 BB HEAT RISER WITH SIDE EXHAUST

service replacement heat riser's configuration differs from that of originals. mike

[Brian J.]

Re: '67 BB HEAT RISER WITH SIDE EXHAUST

Mike, Can you tell me what the differences are?
Brian

[Everett Ogilvie]

Re: '67 BB HEAT RISER WITH SIDE EXHAUST

There is a "boss" on originals which is the full width of the part. On replacements this boss is only about half width. The boss has a roll pin pressed into it which accepts one end of the anti rattle spring, and the counterweight hits the pin at either end of the weight's rotation. To my knowledge only originals have the full width boss.

[Mike M.]

Re: '67 BB HEAT RISER WITH SIDE EXHAUST

brian: everett gives a perfect description. mike

[Brian J.]

Thanks everyone, appreciate the help

I bought a heat riser from GM recently, did not receive it yet, but will let you know how it turns out.
Thanks and always appreciate the help, Brian