Need some help dipping into the 11's
Alright guys I know we aren't working on an a body here but I trust you guys a lot more than I would a truck owners group!
What we're working with here is a 1987 Dodge D150 short bed, regular cab, it has run 12.01 for us before and usually runs a 12.1 and then drops to 12.3 or so for following passes in a day. The engine is a 416" (360 based) stroker with an Indy 360-1 top end on it and a mechanical roller cam, it has a Demon carb and large tube tti headers. So far traction doesn't feel like an issue and we were all convinced that the truck was as fast as it was going to get.... that was until we saw this picture of the truck launching at the Mopar Nationals last year:
If you look closely there enough the truck has dark smoke coming from the tailpipes, and the exhaust is open during this run so the majority of the exhaust is coming out of the cutouts under the truck. My thought is that being a heavier vehicle is that the truck doesn't really need a mechanical secondary carb on it but rather a vacuum secondary, but my hard-headed uncle wants no part of putting another carb on it.
Is there a way to tune out the smoke with maybe smaller jets or tuning on the secondary end of the carb with accelerator pump cams or squirters?
Alright guys I know we aren't working on an a body here but I trust you guys a lot more than I would a truck owners group!
What we're working with here is a 1987 Dodge D150 short bed, regular cab, it has run 12.01 for us before and usually runs a 12.1 and then drops to 12.3 or so for following passes in a day. The engine is a 416" (360 based) stroker with an Indy 360-1 top end on it and a mechanical roller cam, it has a Demon carb and large tube tti headers. So far traction doesn't feel like an issue and we were all convinced that the truck was as fast as it was going to get.... that was until we saw this picture of the truck launching at the Mopar Nationals last year:
If you look closely there enough the truck has dark smoke coming from the tailpipes, and the exhaust is open during this run so the majority of the exhaust is coming out of the cutouts under the truck. My thought is that being a heavier vehicle is that the truck doesn't really need a mechanical secondary carb on it but rather a vacuum secondary, but my hard-headed uncle wants no part of putting another carb on it.
Is there a way to tune out the smoke with maybe smaller jets or tuning on the secondary end of the carb with accelerator pump cams or squirters?