Pontiac Firebird SD-455 Engine - New-Age Super Duty
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Melvin's Super Duty had been built to original specifications with the exception of a R/A-IV-spec cam and looked completely stock under the hood. The Q-Jet carburetor proved to be a little too rich on the top end, which gave away a few ponies. In that respect, the EFI might have an advantage in the carburetor's current tune. But since the engine is apart, Bob Wise, who is a Q-Jet magician, will blueprint the 33-year-old carburetor to correct the fueling issues. Not only will this improve the performance and driveability, it will make for a more accurate comparison to the Mass-Flo EFI system. It would not be proper to compare an untuned carburetor to a tuned EFI. View Related Article
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