625 street demon

Timed where?


I love the pro shop stories. I have a 650 dp I got from my Gremlin buddy for $50. He got it from a friend for free. The carb had been on fire and left out in the weather for a long time.

He soaked it, put in a fresh kit, new throttle blades since the origs were bent and pitted. He couldn't get it to run right. He prided himself a Holley expert and didn't want my help.

So he eventually takes it to a Speed shop in Monaca PA which was owned and run by an ex Holley engineer. His picture is actually in one of those DYI Holley books.

Anyways he puts in a new throttle shaft and goes through it. $75. The carb still idles high and cuts out when the secs are opened, he takes it back. This time it comes back idles a little lower and still cuts out on the sec side.

My buddy took it off at the track and put his 3310 back on. I asked if he wanted to sell the carb. He said I just gave God (what we called the Holley engineer) $50 to go through it again, so give me 50 and it's yours.


I brought it home and flipped it over. Loosened the screws on the throttle blades, centered the blades in the bores and tightened them. Got the idle now adjustable. Then on to the sec side. Yanked the metering block and started spraying carb cleaner threw all the passages. Found the main jet was clogged. Pulled the jet out and the channel behind it was packed with cork gasket material. Took and hour and a half digging it out with strands of wire.

Works perfect to this day. I'm just your average idiot too. Looked at it and figured it out.