what do you think of this motor?

ebay item # 390012622807

Its a 434 sBC seems like a good deal. If you have that much cash hanging around.

Mike

It looks like a nice engine, but for that price, I think I would rather a mild ls1 with about the same power and better mileage.

I think it would be cheaper to build it yourself though as long as you can get a decent price on machine work. A 434 is a 400, bored .030 over with a 4 in stroke..... nothing extremely hard for any competent machine shop. I bet you could save 2-3k at least.

It looks like a nice engine, but for that price, I think I would rather a mild ls1 with about the same power and better mileage.

I think it would be cheaper to build it yourself though as long as you can get a decent price on machine work. A 434 is a 400, bored .030 over with a 4 in stroke..... nothing extremely hard for any competent machine shop. I bet you could save 2-3k at least.

It would take a fairly modified LS1 to get into the 525hp/570ft/lbs range so how great it's mileage would be, I really don't know. Very few stock chevy 400 will clearance for a 4" stroke without hitting the waterjacket so considering they are using a Dart block to start with & how complete the engine is, that $8200 price tag isn't far off.
I'm not keen on some of their parts choices & brands but as a complete, tested engine, it's not a bad deal at all.

what parts would you change if you had too?

Mike

The parts list looks good... but it's too cheap. that engine should be costing more like $10-$12K to do it right.
The block alone is more than $1500 bare
I'm betting there is some really crappy machine work, or some used parts in there

These are some of the things I'd like to know more on before I spent that much money...Looks like it was built with cheapo parts.


Cylinder Block NEW DART SHP 4 Bolt Block Bored to 4.155"
Crankshaft New "NEW" is not a brand! RPM 4340 Forged Steel 4.000" Stroke Nitride Surface Hardened
Connecting Rods New 4340 Forged H-Beam W/ ARP Bolts and silicon bronze bushings 6.000"
Pistons Probe SRS Forged CNC w/ full floating pins.
Piston Rings Akerly & Childs Extreme Piston Rings Plasma Moly Faced
Timing Set Engine Pro True Roller Billet Gear
Camshaft Comp Cams Hydraulic Roller Custom Grind
Cylinder Head Racing Head Service 200cc Aluminum Cylinder Heads
Valves Comp Cams 2.020 Intake and 1.600 Exhaust Polished Stainless Swirl Polished.
Valve Springs Isky dual spring w/ Chromoly Steel Retainer and Hp 7 degree locks Rocker Arms Pro Magnum Doesn't say COMP Stainless Steel Full Roller Fulcrum and Tip
Push Rods 1 Piece Hardened Chromoly Steel .065 Wall 5/16"
Bearings Clevite H-Series Performance
Hardware All ARP Head Bolts, Main Bolts, and Accessory Hardware.
Oil Pan Champ Pans USA Made 7qt. Street/Strip Pan w/ Windage Screen
Oil Pump Melling HV Pump w/ HD Steel Driveshaft
Cover Polished Aluminum Timing Cover
Damper Powerbond 8" Internal Balance Damper
Flexplate SFI Double Welded Internal Balance 168T Flexplate
Intake Manifold Edelbrock Perfromer RPM Air Gap Dual Plane Endurashine Finish
Water Pump Aluminum High Flow w/ Ceramic Seals
Pulleys Brackets Zoops Billet Alternator And Power Steering Bracket Kit With Billet Serpentine Belt Pulleys
Alternator Tuff Stuff Chromed Alternator 1 Wire 100 Amp
Power Steering RPC Chromed Saginaw Power Steering Pump
Valve Covers GM Performance Cast Aluminum "Chevrolet" (Black or Satin) w/ Filter Element Breathers
Carburetor Quick Fuel 830cfm Mechanical Secondary w/ Electric Choke, Billet Metering Blocks
Fuel System High Flow Fuel Pump w/ Stainless Braided Line and Aluminum AN Fittings (Fittings are available in red/blue, black or silver)
Ignition Pro Billet Distributor, MSD 8mm Wires (Red or Black)
Water Outlet Polished Aluminum Swivel Water Outlet (90' or 45') w/ 180 Thermostat
Starter Chromed High Torque Tilton Style w/ Adjustable Mounting Block

I can guarantee that most of this stuff is from Pro-Comp Electronics their catalog is worded like that
http://www.procompelectronics.com
They are importers from China and the Philippines.
Some of the stuff ain't bad... some of it is.