429 ford

What are you trying to accomplish? The main girdle isn’t needed, use a stock replacement grade 8 bolt for the mains, a flat top piston with a closed chamber head is gonna give you way too high of compression for any pump fuel, and last but not least the stealth intake is great for WOT but gives up a lot at part throttle.

Hi your not going to need a big lift cam .. it's fairly easy to get 450 to 500 out of a 429/460 with flat top pistons and D0 heads. You do need a duel lift pattern .. cam to make up for the smaller exhaust valve.. this might work well

good luck take care be safe
tim

What u thing i need to have high response idle to 5500rpm i will follow your advice

HI I had a 460 bored .030 over.. (over bore should only be done to clean up cylinders, you don't gain a lot with boring .030 over bore only gained me 6 cu.in. making it a 466.) Stock crank with foot ball (truck ) rod bolts. Flat top pistons, D2VE heads cleaned up exhaust bump, Comp roller tip rockers, Performer intake, 750 cfm edelbrock carb ,1 3/4" headers, 516 intake lift 543 exhaust lift Launati cam. 3:55 Rear gears Tru track 9". dynoed at over 400 + TQ right off idle to 5,500 RPM's in my 5,000 lb. 4 door truck also pushed it to a 14.5 sec. 1/4 mile
OH C6 transmission stock torque converter.

good luck take care be safe
tim

Personally I like solid cams better. Easier to adjust and make great HP/TQ.
COMP Cams Magnum Solid Camshafts 34-340-4
Camshaft, Mechanical Flat Tappet, Advertised Duration 270/270, Lift .540/.540,