Choosing an engine for a GM A/G-body
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I'd also go w/the 400 or 455. You will want to go with the "large" round port heads though. (Ram Air 4's are the best,Ram Air 5's w/high comp.pistons,or HO's.) I'm impressed with the horsepower & ease of streetability in the large Ponchos. They bolt right in however, most driver's side headers need slight modifications. There's limited space (using such large primaries) & 455's are one of the few powerplants that require little back pressure.{in high performance applications} Remember: those 67's are extremely heavy for a midsize Gm body. The added cubes come in handy. You'll also want to stick with the T-400 transmission. | I'd also go w/the 400 or 455. You will want to go with the "large" round port heads though. (Ram Air 4's are the best,Ram Air 5's w/high comp.pistons,or HO's.) I'm impressed with the horsepower & ease of streetability in the large Ponchos. They bolt right in however, most driver's side headers need slight modifications. There's limited space (using such large primaries) & 455's are one of the few powerplants that require little back pressure.{in high performance applications} Remember: those 67's are extremely heavy for a midsize Gm body. The added cubes come in handy. You'll also want to stick with the T-400 transmission. | ||
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