HELP - New Engine Building ideas....
We have been looking at these NEW rules for our tracks here in Texas and we need to build a new engine....based on these rules below. Current engine, 350 4 bolt bored 30 over KB 4v relief hyper pistons, 450 lift howards cam and lifters, 1.5 rockers, stock length push rods, stock cast crank, 5.7 stock press rods, stock HEI dist, stock late 60's medium rise intake no egr crap, stock 1.94/1.50 heads with screw in studs, stock 4412 holley ct w/75 jets, 1" carb adaptor phenolic non adjustable, 7 qt kevko pan with scraper and doors, milidon hi volume oil pump, mini starter, pro products 6" harmonic balancer, 168 tooth flexplate, all arp bolts except on rods and main caps, usually run pump gas 92. unknown vacuum & compression & cc of heads. Track 1/4 mile fast med bank.
What would you build and with what parts ??
Parts we already have...487x 1.94/1.50 heads that need rebuilt, was thinking of lt1 exhaust w/adaptors.
Everything will be brand new including block, budget of about $ 3,500
As we already learned if we go by the rules we will be in the back of the pack & not winning.
If you wanna Private message me thats fine, any and all ideas will be appreciated.
ENGINE: Must be stock for the make and model except no 400’s or larger small or big blocks.
All engine components including water pumps, distributor, etc., must be strictly stock. Cast
piston only, Chevy must use 4 equal valve relief pistons. Aftermarket mini starter, pulleys,
harmonic balancer and oil pans okay. Aftermarket power-steering pumps okay. Metric cars may
run a 350. NO stroking or de-stroking. Engine must be in stock location. Solid motor and
transmission mounts okay. Maximum cranking compression 175 lbs.(ignition off, engine turned
over 5 times).
CAMSHAFT, VALVETRAIN, AND CYLINDER HEADS: Hydraulic cam and lifters only.
.447 maximum lift. Must maintain 14” of vacuum at 1200 rpm. 1.94 maximum intake valve
diameter, 1.50 maximum exhaust valve diameter on Chevrolet engines. Stock size valve springs
and stock length pushrods only. Stamped steel 1.5 rockers on Chevy , 1.6 on Ford and Chrysler,
NO roller tips. Open chambered heads only, must be unaltered, O.E.M. NO porting, polishing, or
gasket matching allowed. Screw in studs and guide plates ok. 305 engines may use 305 heads(no
vortec).
CARBURATION AND FUEL SYSTEM: Holley 4412 2-barrel only. Must be unaltered.
Choke plate may be removed. 4412 must be cast into body of carb. Maximum spacer and adapter
1” combined total. Fuel pump must be in stock location for make, NO electric pumps or fuel
injection even if factory equipped.
EXHAUST: Stock unaltered cast iron exhaust manifolds only. NO Chevy center dump,
Corvette, marine, or tubular steel type manifolds. Exhaust must remain dual, NO crossover, Ypipe,
or 2-in-1 pipes. Mufflers required.
INTAKE MANIFOLD: Stock unaltered aluminum or cast iron intake only. NO aftermarket or
stock high performance or high rise. NO bowties. NO porting, polishing, or gasket matching.
TRANSMISSIONS: Any stock type automatic or manual. Automatics must have working 11”
torque converter. NO direct drives. Trans. Cooler ok. Manual must have 10.5” clutch and steel
flywheel. NO mini clutches. Steel drive shafts must be painted white and have a loop 6” from
front u-joint.
FUEL: Pump or racing gas only. NO additives or smells. Fuel tank must be secured in trunk.
Fuel cells recommended.
