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Discussion Starter · #1 ·
I recently picked up a 68 C10 and it's got a crappy 305 in it. Since I have a 350 sitting in the shop, I'm going to rebuild it.*

My question is this, I want to get around 375 to 400hp and good torque out of it cause I plan on using the truck to tow or haul whatever I can/need to.

Now I have rebuilt a few engines before but they were stock rebuilds, nothing over 300hp and all were for cars that didn't need much more than stock torque.

Can anyone point me in a good direction to get started?*

I know I will need to buy some good heads but which ones? Without needing a second mortgage.

I have a cam in mind but not sure if the specs on it will be good enough to get me where I want to be.

Oh and I will be using either the FAST EFI or Holley's Sniper EFI, If that matters.

Thanks in advance.
 

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Well thats a tall order 400 horse and that much torque, when you build HP yes the torque goes up but you lose the low end torque, 350 block, 40 over, flat top silvolite pistons, aftermarket alum heads, cam not more that 222 duration, 450 lift with a 110 lobe center . that should give you long flat torque curve for towing.
 

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Discussion Starter · #3 ·
406rich,

I'm not stuck on the HP numbers, just looking to build an engine that will get the truck up and moving, pretty quickly and still be able to tow a regular trailer without needing a big block.

Thanks for the info, how much torque would be a good number to shoot for?
 

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406rich,

I'm not stuck on the HP numbers, just looking to build an engine that will get the truck up and moving, pretty quickly and still be able to tow a regular trailer without needing a big block.

Thanks for the info, how much torque would be a good number to shoot for?
best bang for your buck for torque first then HP would be to build a stroker, 400 crank kit in your 350 block...your 350 has now become a 383 cubic inch...loads of torque you can buy these thru summit. Complete with rods bearings pistons for the bore you need. Not sure how much you want to spend...!
 

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Discussion Starter · #5 ·
I found theses specs for a rebuilt SBC that I think look pretty good, tell me what you think.

Horsepower:*350
Torque:*400 lb/ft
Block:*Seasoned OE 4 Bolt Main 1pc Seal Roller Block P/S Dipstick
Bore/Stroke:*4.040 x 3.480
Displacement:*350 C.I.D.
Crankshaft:*OE Cast Crank 3.480" Stroke Externally Balanced Rear/Internal Front 1pc.
Connecting Rods:*OE Powder Metal 5.700" Stock Bolts
Pistons:*Hypereutectic Flat Top
Piston Rings:*Moly Rings
Compression Ratio:*9.6:1 Compression
Camshaft:*Hydraulic Roller
Camshaft Specifications:*220/224 @050 .495in/.502ex 112LSA
Camshaft Bearings:*Installed & Clocked to OEM Position
Cylinder Heads:*Cast Iron Vortec 64cc/165cc 1.94/1.50
Freeze Plugs:*Brass Installed & Sealed
Rocker Arms:*Stamped Steel 1.5 Ratio
Oil Galley Plugs:*Installed & Sealed
Oil Pan:*OE 5qt.
Weight:430

Oil :*10W30
Fuel Delivery :*Quick Fuel Carburetor 680cfm #HR-680-VS
Intake Manifold :*Edelbrock Performer RPM Vortec Dual Plane #7116
Spark Plugs :*Autolite #605
Spark Plug Gap :*.035
Harmonic Balancer/Damper :*POWERBOND Internally Balanced 8" #PB1046-N
Flex Plate / Flywheel :*Externally Balanced 168 Tooth*
Timing :*34-36 Degrees Total
Exhuast :*1 5/8 Headers
Fuel Pump :*Holley 110GPH Mechanical #12-327-11
Fuel :*91+ Octane
Ignition :*MSD HEI #8362
Automatic Transmission Stall Converter :*2000-2500
 

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That will work for you..!
 

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Discussion Starter · #7 ·
It runs around $3000.00 with free shipping too boot.
 

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I found theses specs for a rebuilt SBC that I think look pretty good, tell me what you think.

Horsepower:*350
Torque:*400 lb/ft
Block:*Seasoned OE 4 Bolt Main 1pc Seal Roller Block P/S Dipstick
Bore/Stroke:*4.040 x 3.480
Displacement:*350 C.I.D.
Crankshaft:*OE Cast Crank 3.480" Stroke Externally Balanced Rear/Internal Front 1pc.
Connecting Rods:*OE Powder Metal 5.700" Stock Bolts
Pistons:*Hypereutectic Flat Top
Piston Rings:*Moly Rings
Compression Ratio:*9.6:1 Compression
Camshaft:*Hydraulic Roller
Camshaft Specifications:*220/224 @050 .495in/.502ex 112LSA
Camshaft Bearings:*Installed & Clocked to OEM Position
Cylinder Heads:*Cast Iron Vortec 64cc/165cc 1.94/1.50
Freeze Plugs:*Brass Installed & Sealed
Rocker Arms:*Stamped Steel 1.5 Ratio
Oil Galley Plugs:*Installed & Sealed
Oil Pan:*OE 5qt.
Weight:430

Oil :*10W30
Fuel Delivery :*Quick Fuel Carburetor 680cfm #HR-680-VS
Intake Manifold :*Edelbrock Performer RPM Vortec Dual Plane #7116
Spark Plugs :*Autolite #605
Spark Plug Gap :*.035
Harmonic Balancer/Damper :*POWERBOND Internally Balanced 8" #PB1046-N
Flex Plate / Flywheel :Externally Balanced 168 Tooth
Timing :*34-36 Degrees Total
Exhuast :*1 5/8 Headers
Fuel Pump :*Holley 110GPH Mechanical #12-327-11
Fuel :*91+ Octane
Ignition :*MSD HEI #8362
Automatic Transmission Stall Converter :*2000-2500
WOW for someone that has only re-built STOCK'esh motors he sure built himself a pretty good combination of HP parts.
Now for what I would build that matches his "spec's" I'd go with the Old LT1 (1970) blocks specs . GM rated that as 360 HP in the Camaro and 370 HP in the Vette but when NHRA guys tested that motor the spec's jumped to 425HP. Like what was mentioned for torq go with a smaller boar and a longer stroke simular to the 305 sbc motors spec's being the bottom end had much more GRUNT then top end.

PS; I have a 305 in my 68 C10, 4L60 trans with 3.73 in the a$$ end and it pulls just fine up the grades we have. Also the 305 can very well produce 350 HP easily. Go to "itstillruns.com" find the menu button right top click and type in "350-305 chevy-small-block7703245" scroll down to find " How to Get 350 Horsepower Out of a 305 Chevy Small Block" BAM THERE YOU GO not so "crappy" now.
 
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