gsholz

After owning my '64 for almost a year, I finally replaced the heat riser with the fuel injection dummy riser. The car sounds much better now when cold and it should prevent the passenger muffler from rusting through pre-maturely. I noticed no change in cold start behavior other than sound.

LouieM

I did the same thing when I redid my 327/350 engine about 9 years ago. I didn't notice a sound change because I also changed to a new brand of muffler, but I like knowing that the engine breathes 0.01% better.