Top Krate - Crate Engine

The latest edition to our “Killer Krate” engine series is the Top Krate. The Top Krate is a competition only engine that is designed for Top Sportsman/Top Dragster and Quick 16/32 racing. Over the years, we have tried every conceivable engine combination and have come to the conclusion that our 596” package is the best “bang for the buck” for a competition engine.

We start with the Mopar Performance Siamese bore block made by World Products. We achieve 596 cubic inches with a 4.53 bore forged Ross pistons and a 4.625 stroke Callies crankshaft. The reason for the 4.625 stroke is that it is the largest stroke that fits with aluminum rods in a standard cam height block. You can run up to a 4.75 stroke with a steel rod in a std cam block but since these engines are most likely going to see nitrous oxide, therefore I strongly recommend R&R billet aluminum rods. A Muscle Motors billet timing chain, dual line oil system and oil pan finishes up the shortblock and keeps everything properly lubricated.

The heart of any internal combustion engine are the cylinder heads. We use THE BEST flowing cylinder heads for big block Mopars, the Predator cylinder head (by Indy). This head features symmetrical intake and exhaust ports (IE: Pro Stock) capable of flowing over 540 CFM when we CNC port them. We actually have 2 proprietary intake port programs. The standard port utilizes a 2.400 intake and 1.850 exhaust valve sizes. The large CNC port program uses a 2.450 intake valve (titanium required). The small intake runner measures 440 cc’s, the large port measures 480 cc’s. The valves are actuated by T&D rocker arms that are available in 1.75, 1.80 and 1.90 rocker ratios. These rocker arms have no offset which makes them very stable at high engine speeds. We have raced them for years on engines with valve springs that have 450 psi seat pressure, over .950 cam lift and turning over 8500’s with no failures! The rest of the valvetrain(retainers, locks, springs, spring cups, cam and lifters) are supplied by Comp Cams. These are all bulletproof components that ensure durability that wins races!! Our standard Top Krate comes with a 1x4 cast intake manifold (2x4 optional) and sheet metal valve covers.

Performance: Our single 4bbl Top Krate makes 1150 HP @7400 and 900 ft lbs @ 5700. This should propel any 1850 lb dragster to 6.90’s-7.0 range on motor in decent air. Add a single stage and 6.50’s are no problem! A 2350 lbs. door car should run 7.40’s-7.50’s all motor and 6.90’s on a single stage. All of this performance can be had (intake to oil pan) for $22,999

Over for options

Quick Fuel QFX Muscle Motors spec’ed carb add $1100
Dyno test (oil, plugs and fuel included) add $800
Tunnel Ram 2x4, linkage, regulator, two carbs, lines & fittings add $1650
Single stage fogger, plumbed, complete (no bottle) add$1600
Titanium Valve upgrade add$650 (per 8 valves)
Gear Drive add $500
Belt Drive add $800
Raised cam belt drive add$1400
Belt driven distributor (belt drive required) add $600
Offset distributor add $795
Per made wire set add $159
Crank trigger add $329
Bush lifter bores (all 16) add $650
Dry sump oil system (pump, tank, lines, pan) add $3500
4/7 2/3 firing order camshaft add $400
Bore block for 60 mm cam (mush be bushed) add $600
Aluminum World Products block add $3200
Aluminum World Products raised cam block add $4500
Aluminum Indy block (drilled for pushrod oiling and bushed) add $3100