Are you saying that you are making a 455 out of a 400?
What year/casting# is the block? If you have a 557 block, you would be wise to find a better one to stroke it or keep it a 400. I've been racing my "557" block for quite awhile and it has held up fine with heavy TRW pistons and stock rods, but I attribute that to first class machining, luck, and keeping the RPM's down.
If you go the 455 route, the Tomahawk intake would also work well for you and gives you the option to change and experiment with carbs as it's made for both spreadbore and square bore carbs.
If you are going to go with a Q-jet by Cliff, which is a good choice, you need to order it soon or atleast get your initial order in as he always has a waiting list/period.
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 Johnny US Army Retired
1978 T/A 463 Pontiac, KRE 74cc 300CFM D-ports, Howard's custom SFT, Nash Intake,QFT 950 E85 carb, TCI TH-350, 4200 converter 3.73 12 bolt [email protected]
1981 T/A 4-speed 406 Pontiac, Merrick ported 6X heads, Comp 270S cam, Crosswind intake 750 Street Demon, 3.42 30 spline Eaton posi street car.
1972 LeMans 350 Pontiac H/S Drags project
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