Ed Wright wrote: I don't see how this is going to do much of anything good. Hope I'm wrong, more power and/or less fuel needed is always a good thing. Going to be interesting if nothing else. ...
automotive breath wrote:I have a set of LT1 heads running with three grooves coming together with a common outlet between the valves. Comments please, before I show up at Larry’s for the test!
The most amazing before / after test I ever did on the dyno was with a SBC, small hydraulic cam, about 370chp. It had a single plane intake with a Quadrajet carb. It was a used intake and came with an adapter that held in place a homemade plenum divider plate. The plenum divider plate was rectangular and didn't match the plenum at all, just very crudely divided the manifold plenum in half from front to back. We did all the testing with the divider plate in place but took it out for a couple tests to see what effect it had. The engine dropped 57ctq with the plate out. I couldn't believe it. That is not a typo - it dropped 57 corrected ft. lbs. torque!! I've tried a plenum divider plate on many other engines since and it has never had that much effect.
I don't know if the grooves mod will be that good
Monkeywrench wrote:Just noticed the posts on the grooved combustion chambers. A USA-based BMW tuning shop, Metric Mechanics , has been putting multiple grooves in combustion chambers for a while now. They seem to be very succesful at it too…
Ed Wright wrote:Jimmy Bell didn't just fall off the turnip truck.