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Well you didn't say what heads and cam you were running. Or whether it street or strip. My W2 headed 416 with a 272@050 612 lift cam. Loves my 950HP. IMO a 650 will not allow that motor to run to it's full potential.



Make that "two" satisfied 950 Holley users, we just dyno'd my friends 422 340 stroker, ported W2 heads, milder cam than above, still liked the 950 over a 750 DP, and an 800 AVS ("liked" = about 30 more HP than either of the other carbs). We never ran a Thermoquad but I'd say a nicely tuned TQ would hold it's own against any of them in terms of overall performance.