Exactly
Engines, thoughts??
Thread Starter
Racer
Joined: Jul 2007
Posts: 256
Likes: 0
From: Glasgow, Scotland
Engines, thoughts??
I was thinking about this engine, whats the positives and negatives to this engine(going into a 78 vette, auto)
383 - 522bhp/500lb/ft
Block:
* 4-bolt main block
* Passenger side dipstick
* Square and parallel decked
* Align-honed main bearing bore
* Cylinders honed on computer-controlled machine to within .0002 straightness and roundness
* Cylinders are sonic tested for thickness
Rotating assembly:
* New SCAT cast crankshaft
* Keith Black hypereutectic flat top pistons
* 5.700 in. SCAT forged I-beam connecting rods
* Hastings moly rings
* Balanced rotating assembly
* Melling high-volume oil pump
* Solid lifter camshaft
* Heavy-duty double roller timing set
Cylinder heads:
* RHS Lightning 50cc cast iron heads
* 1.437 in. diameter valve springs
* 2.02 swirl-polished intake valves
* 1.60 swirl-polished exhaust valves
* Hardened pushrods
* Professional Products single-plane high rise aluminum intake manifold
* 12.9 to 1 compression
* Painted steel valve covers and timing chain cover
* 7 qt., left turn baffled Circle Track painted steel oil pan
* Professional Products 8 in. harmonic balancer
* COMP Cams rocker arms with stud girdle
* Brass freeze plugs
cheers
dave
383 - 522bhp/500lb/ft
Block:
* 4-bolt main block
* Passenger side dipstick
* Square and parallel decked
* Align-honed main bearing bore
* Cylinders honed on computer-controlled machine to within .0002 straightness and roundness
* Cylinders are sonic tested for thickness
Rotating assembly:
* New SCAT cast crankshaft
* Keith Black hypereutectic flat top pistons
* 5.700 in. SCAT forged I-beam connecting rods
* Hastings moly rings
* Balanced rotating assembly
* Melling high-volume oil pump
* Solid lifter camshaft
* Heavy-duty double roller timing set
Cylinder heads:
* RHS Lightning 50cc cast iron heads
* 1.437 in. diameter valve springs
* 2.02 swirl-polished intake valves
* 1.60 swirl-polished exhaust valves
* Hardened pushrods
* Professional Products single-plane high rise aluminum intake manifold
* 12.9 to 1 compression
* Painted steel valve covers and timing chain cover
* 7 qt., left turn baffled Circle Track painted steel oil pan
* Professional Products 8 in. harmonic balancer
* COMP Cams rocker arms with stud girdle
* Brass freeze plugs
cheers
dave
Burning Brakes
Joined: May 2007
Posts: 1,150
Likes: 14
From: LaMoille Illinois
stay around 10.5:1 if you want something more streetable (to cruise around in) jmho
Burning Brakes
Joined: Dec 2003
Posts: 1,004
Likes: 7
From: Adelaide South Australia
What's the application ????
If it's primarily for drag racing, then might be a good thing, although your auto will need some beefing up to cope with that torque? And a 3000 rpm stall converter would probably be the minimum to get going strong.
If it's a street car, then that 12.9:1 CR is ridiculous.
Where will you get the high octane race fuel when you're touring?
CR of 10.5 could still get you around 500hp, especially with a decent solid roller. I'd also consider a dual plane manifold. Professional Products have an Edelbrock RPM Airgap clone which would work well. Might lose a few peak horses, but broaden the torque range to provide stronger pull from lower rpm for a street engine.
Cam selection will dictate a lot though.....
I have just installed a 383 stroker in my 68 vert, but have also swapped out my 3sp auto in favour of a 5sp manual.
Incredible transformation.
If it's primarily for drag racing, then might be a good thing, although your auto will need some beefing up to cope with that torque? And a 3000 rpm stall converter would probably be the minimum to get going strong.
If it's a street car, then that 12.9:1 CR is ridiculous.
Where will you get the high octane race fuel when you're touring?
CR of 10.5 could still get you around 500hp, especially with a decent solid roller. I'd also consider a dual plane manifold. Professional Products have an Edelbrock RPM Airgap clone which would work well. Might lose a few peak horses, but broaden the torque range to provide stronger pull from lower rpm for a street engine.
Cam selection will dictate a lot though.....
I have just installed a 383 stroker in my 68 vert, but have also swapped out my 3sp auto in favour of a 5sp manual.
Incredible transformation.
Race Director
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
Cast crank and KB Hypers in a 12.9 to 1, 522 HP 383 is asking for trouble. Upgrade these to forged for this application. Don't think it is a pump gas motor, Race fuel only.
Le Mans Master
Joined: May 2002
Posts: 5,086
Likes: 786
From: Lebanon Township New Jersey
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Safety Car
Joined: Feb 2006
Posts: 4,855
Likes: 2
From: Columbia South Carolina
take your rear end ratio in to account too when you are buildiing a high horsepower motor. if it makes peak power about 5500 RPM which I suspect is going to be the case anything less than 3:73 is going to feel like taking off out of a mud pit.
Thread Starter
Racer
Joined: Jul 2007
Posts: 256
Likes: 0
From: Glasgow, Scotland
what's the thoughts on this one
383 400 hp/440 ft/lbs
Block:
* 4-bolt main block
* Passenger side dipstick
* Square and parallel decked
* Align-honed main bearing bore
* Cylinders honed on computer-controlled machine to within .0002 straightness and roundness
* Cylinders are sonic tested for thickness
Rotating assembly:
* SCAT forged crankshaft
* Probe forged pistons
* SCAT I-beam connecting rods
* Hastings moly rings
* Balanced rotating assembly
* Melling high-volume oil pump
* Flat tappet hydraulic lifter camshaft
* Heavy-duty double roller timing set
Cylinder heads:
* Dart Pro 1 aluminum heads
* Hardened retainers and springs
* 2.02 swirl-polished intake valves
* 1.60 swirl-polished exhaust valves
* Hardened pushrods
* Professional Products dual-plane satin finish intake manifold
* 9.5 to 1 compression
* BluePrint Series aluminum valve covers
* Kevco oil pan
* Silver Seal chrome timing chain cover
* Professional Products harmonic balancer
* Brass freeze plugs
I thought the forged crank and pistons should be good for future upgrades.
If I changed the cams and maybe heads, could I get this motor to 500hp, running on pump gas??
cheers
dave
383 400 hp/440 ft/lbs
Block:
* 4-bolt main block
* Passenger side dipstick
* Square and parallel decked
* Align-honed main bearing bore
* Cylinders honed on computer-controlled machine to within .0002 straightness and roundness
* Cylinders are sonic tested for thickness
Rotating assembly:
* SCAT forged crankshaft
* Probe forged pistons
* SCAT I-beam connecting rods
* Hastings moly rings
* Balanced rotating assembly
* Melling high-volume oil pump
* Flat tappet hydraulic lifter camshaft
* Heavy-duty double roller timing set
Cylinder heads:
* Dart Pro 1 aluminum heads
* Hardened retainers and springs
* 2.02 swirl-polished intake valves
* 1.60 swirl-polished exhaust valves
* Hardened pushrods
* Professional Products dual-plane satin finish intake manifold
* 9.5 to 1 compression
* BluePrint Series aluminum valve covers
* Kevco oil pan
* Silver Seal chrome timing chain cover
* Professional Products harmonic balancer
* Brass freeze plugs
I thought the forged crank and pistons should be good for future upgrades.
If I changed the cams and maybe heads, could I get this motor to 500hp, running on pump gas??
cheers
dave
Race Director
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
Here you go.http://forums.corvetteforum.com/show....php?t=1735609