383 450-500HP budget/reliable

[c00nhunterjoe]

Dunno if the OP is still around.

You can do 425 hp from a .030" stock 383, with 444 Ft/Lbs.
It can be done, and does NOT require a ton of exotic or expensive parts.
Keep in mind this is with a 274H, more is on tap with a larger Cam

This is one our Shop did about 6 years ago for a Customer using stock cast pistons, iron heads W/stock 2.08"/1.74" valves

And while I will NOT argue the Stroker route if you are so inclined..... keep in mind a Stroker will end up FAR MORE expensive than this 383 !
(you can damn near BUILD this for the price of the Stroker Kit alone)
It's all in what a guy wants I guess ?
But these are very fun little engines, and usually can be plenty to put a smile on a guy's face within a budget.

Upgrades:
ARP Rod Bolts
H.V. Oil Pump
Comp 274H cam
Adjustable Ductile Iron Rockers/Pushrods
Torker 383 Intake & 750 cfm Holley

Labor:
Block Machine Pkg
Head Rebuild Pkg
extra Block & head Milling to "set" for 9.2:1(nowadays just buy a KB 9:1 Piston, but we were using the stock "cast" low C.R. piston back then)
Bowl Port / Gasket match Heads / properly done Valve Grind and Angles.

[BSB67]

Dunno if the OP is still around.

You can do 425 hp from a .030" stock 383, with 444 Ft/Lbs.
It can be done, and does NOT require a ton of exotic or expensive parts.
Keep in mind this is with a 274H, more is on tap with a larger Cam

This is one our Shop did about 6 years ago for a Customer using stock cast pistons, iron heads W/stock 2.08"/1.74" valves

And while I will NOT argue the Stroker route if you are so inclined..... keep in mind a Stroker will end up FAR MORE expensive than this 383 !
(you can damn near BUILD this for the price of the Stroker Kit alone)
It's all in what a guy wants I guess ?
But these are very fun little engines, and usually can be plenty to put a smile on a guy's face within a budget.

Upgrades:
ARP Rod Bolts
H.V. Oil Pump
Comp 274H cam
Adjustable Ductile Iron Rockers/Pushrods
Torker 383 Intake & 750 cfm Holley

Labor:
Block Machine Pkg
Head Rebuild Pkg
extra Block & head Milling to "set" for 9.2:1(nowadays just buy a KB 9:1 Piston, but we were using the stock "cast" low C.R. piston back then)
Bowl Port / Gasket match Heads / properly done Valve Grind and Angles.

Bob, Thanks for posting.

Are the fuel mass consumption rates correct?  They seem way low for the power output.  Shouldn't they be in the 170 #/hr. range at 430 hp?  Was the flow split?