Jake Gier has been very fast on his 26x8.5 tires with one stage and dinosaur Fred Brewer heads. Believe he's been 4.80's with it. I can't remember the cubic inch.
Gary's combo and his old one are really effective also, I'm tempted to bother him and learn more about his old -1 combo.

Fishy340 has a nasty 4.30 small block he won't tell us about laugh lol hey Andy