There are three manifolds available for 4150 & 4500 carbs including the NEW 440-3X with larger plenum for 600 cid engines.

• 440-2 RB for 4150 carb - 6.75 in tall
• 400-2 for B engines with same specs
• 440-3 RB for 4500 carb - 6.75 in tall
• 400-3 for B engines with same specs
• 440-3X RB for 4500 carb - 9.00 in tall

  Click here for 440-3X Image.

Part Number	Carb Flange	Height	Block Type	Price	In stock	Purchase
440-2	4150	6.75	"RB"	$365.00	Yes
400-2	4150	6.50	"B"	$365.00	Yes
440-3	4500	6.75	"RB"	$365.00	Yes
400-3	4500	6.50	"B"	$365.00	Yes
440-3x	4500	9.00	"RB"	$525.00	Yes