Building A Serious Bbc For A T-bucket Without A Great Deal Of Effort

Grumpy

The Grumpy Grease Monkey mechanical engineer.
Staff member
not too much difficulty....well other than the screaming and hysterics your checking account will throw after being gutted and torn into shreads

I was asked to post some basics on a twin turbo big block build for an engine with impressive power that might be mostly used to do a few impressive burn-outs, in a t-bucket , the object here was not to race, but to cruise a few car shows and impress the gear head onlookers, thus lots of chrome, and obviously you want impressive sounds and instant tire smoke, a serious 4l80e well built transmission, and a 3500 rpm stall converter.
with few O.E.M components, a dana 60 rear differential, and a 4.33:1 rear gears ratio
with aftermarket gears bearings and axles would be linked to large slicks a very well re-enforced frame and suspension would rather obviously be required as would a stretched frame to allow room for a large radiator, a 3-4 stage dry sump oil pan, the oil pan, would be almost mandatory to prevent potential lubrication issues at that power level,
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to get the required oil pan to street ground clearance and massive air too air intercooler, auxiliary oil and transmission fluid coolers and an individual coil per cylinder crank fired ignition would be on my wish list. (obviously, youll want an ignition advance curve and cut-off thats easily programmable) a computer controlling the fuel delivery and blow off valves that are easily adjustable, that control boost
Id start with a 582 cubic inch short block designed for nitrous use, set up for about 8:1 static compression, , Id use twin turbos but set the waste gates at no more than 8-9 psi., Id design the engine to run on E85 and use 5/8" internal fuel lines with a fuel pump that could easily deliver 400 gal per hour minimum, and a solid roller cam. keep in mind that with twin turbos and 582 cubic inch displacement a cam that would be very radical in a 454 will be almost mild in that combo





heads(Id be looking at trickflow, brodix, pro-filer or AFR 345cc- 360cc rectangle port heads)

https://www.summitracing.com/parts/pmx-2256/overview/

efi intake (Id be thinking along the lines of two 120 lb injectors per runner,)
https://www.summitracing.com/parts/hly-550-838

(Id seriously consider adding dual fuel rails, and two bungs for two injectors per runner on each side )

properly set up getting north of 1500 flywheel horsepower should be no great challenge

short block
https://www.shafiroff.com/chevy-drag-race-short-block/582-nitrous-big-block-drag-race.php


a cam might look like this

https://cranecams.com/racemax-solid-roller-254-262-camshaft-for-chevrolet-396-454-big-block/


bits of potentially useful related info
http://www.superchevy.com/how-to/en...turbo-540-big-block-lays-down-1312-horsepower

http://garage.grumpysperformance.com/index.php?threads/sellecting-cylinder-heads.796/

http://garage.grumpysperformance.com/index.php?threads/piston-related-info.110/
 
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