[Dave Bisschop]

Originally Posted by PAUL K

Thanks for posting, good info. I'm not surprised at all the big inch engine responded well to the wider LSA, also not surprised the higher compression engine liked it. Years ago we were running a 455 with an UltraDyne 271/279 .426 LL cam on a 110. When we switched to 108 LSA the car picked up a solid tenth and a half and almost 2 mph.

As far as the last combo mentioned you think a 462ish engine with 10.75 compression would run low ten's with a 252/262 cam?

There are so many variables that will affect performance, your cam swap obviously showed that the 108 LSA was better suited to the rest of the combo. Does that mean if you had made other changes in the combo that the 110 LSA could have been quicker than the 108? When you did the cam swap did you keep the ICL in the same position? It all goes back to what you said earlier that matching the components is critical. With all the info out there it's fairly easy to get into the ball park, but there are a ton of "grey" areas that require tweaking to get things optimized.

I do believe that a 3500ish lb car all dialed in could run bottom of the 10's with the last combo. Will that happen first time out? I doubt it. Good discussion, if a guy could just do R&D all day everyday!!! Unfortunately that doesn't pay the bills.