hello, wondered what you guys opinion would be for HP/TQ on my 455…

specs as best i can state...

Block bored .030 over
Honed with torque plates
Decked .010
Mains align honed
Crank turned/polished .010/.010, straightened
Factory rods reworked, ARP bolts
Factory cast high compression pistons advertised as 10.25:1 - .010 in the hole
Hastings moly rings
Clevite main/rod bearings
Melling high volume oil pump/pickup/drive rod
Rotating assembly balanced with dampener and flex plate installed
Clevite cam bearings
Bullet hyd flat tappet cam - .512 lift 230/284 duration on both int/ex on a 110 LS
Matching valve springs 110lbs closed, 285lbs open
Cloyes true double roller timing set
J-heads reworked (bowl hog, not ported) milled .022, new 2.07 int and 1.68 exhaust valves
New lifters/pushrods/rocker arms
Stock 4 barrel intake
Modified 800cfm Quadrajet, 76 main jets - 48 primary rods - DB secondary rods
All Felpro gaskets

 

About 400 horespower @ 4800 .if you are using headers.my combo is really close to yours same camshaft q jet ,performer ,compression headder and ga heads.I run 75-49 DA in my quadrajet so your jetting will be close.

 

thanks grampy… how much torque do you think? is that cam pretty good on the street?

 

Plenty of TQ .I run a 3.73 gear radial tires are useless it will roast the tires on a 30 mph roll in 3 gear.you could get away with a 3.23 rear gear with a tight 10 inch converter.my idle vacume is 14 @700 out of gear.
you might need to richen up your secondary rods in your quadrajet your rods are little lean,stock 403 quadrajets came with CV rods.

 

ok, cool... i have a 9" posi 3.25 rear gear, TH400 with 2400 stall
i'll check into the richer secondary rods when I get the motor in my truck...

thanks grampy!