Corrected Horsepower Factors > 340 ~ 360 ~ 383 ~ 400 ~ 426-S ~ 440

ir3333 said
i did read a Dulchic test on a 340 built to stock specs including original carb
...it produced 281 hp.and they claimed the original carb was not working correctly.
Then added a bigger (800?)carb and it jumped up to a bit over 300.
..it seems a sharply tuned 340 could indeed hit 300
adding the thermoquad should show a nice gain over the stock small AVS.
those numbers are probably very close...i love these posts

I did the same swap (kind of, it was a TQ instead of 800 AFB/AVS) and road tested, not dyno tested the carb swap in '88. Since then I have been telling people about the use of the TQ being worth while. I never heard the end of the use of a crap carb was a waste of time. I still say today, the TQ isn't a bad S/S carb at all, worth the time to learn it.

I then did the MP LD340 mod on the said intake.