DRILLING OUT 2BBL JETS

True but the 2 Brl is very low flow and rated too
much HP by NHRA. The Thermoquad has great flow
and a reasonable HP rating.

I have raced this combo for 20 years+, and both my coupe and wagon
have held National Records in M/SA N/SA O/SA and won their class at Indy
with the 4 Brl.

Well, despite extensive testing the 2 brl., was never very competitive.
If you love 2 Brls. the 273 is a better deal.

MY .02 = For free!