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Old 08-27-2012, 05:44 PM
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new gm crate engine

want to replace old 305 in 84 c10, dont know which one to go with, 260 hp or 290 hp.the 290 is about 400 bucks more.will be a daily driver.jegs has free shipping right now.

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Old 08-27-2012, 08:20 PM
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new gm crate engine

I think this would be a better engine than the GM 290 hp engine. Do a search on the Hot Rod Forum on the GM 290 hp engine. http://www.summitracing.com/parts/NAL-12530282/ or this one http://www.summitracing.com/parts/NAL-12530283/
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Old 08-28-2012, 02:11 AM
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Best deal on L31-R Vortec 350 is jegs by far
http://www.jegs.com/i/Chevrolet+Perf...30283/10002/-1

I just put in one of those L31-R in my 74 chevy stepside man. Just ask if you have any questions about the swap. Ill post a pic of mine in my truck Im taking it out for the first time since the swap tomarrow!!!

The L31-R Vortec is by far the way to go. Vortec heads are a verry popular head for budget builders. If you do some head work and a cam swap you can make great power with the vortec engine. Vortec heads, 4 bolt mains, roller camshaft, Higher Compression Ratio of 9.4:1..The 290 HP Crate Engine has lame heads, flat tapped cam, low 8.5:1 compression ratio. Get the Vortec L31-R 3/4 ton heavy duty vesion from Jegs its only like 1829.99$+free shipping and no tax no core charge Summit sells the same engine for 2158.95+100$ core charge+shipping. Actually every other place sells it for much more than jegs and they all charge shipping. I have no clue why jegs is so much cheaper.


L31-R SPECS
Specifications
1986-2000 style block, 4 bolt mains (No Fuel Pump Provision)
1pc rear seal nodular iron crankshaft
Powdered metal connecting rods
Hypereutectic pistons 9.4:1 compression Ratio
Hydraulic roller camshaft: Int Lift .414", Exh Lift .428", Int Duration @.050" 191, Exh Duration @ .050" 196, Lobe Centerline-111
Vortec cylinder heads - 64cc, 1.94'' intake valve, 1.50'' exhaust valve
Also includes: Oil pan, timing cover, valve covers, harmonic balancer
PRICE 1829.99

290 HP SPECS
Specifications
Horsepower: 290 @ 5100 RPM
Torque: 326 ft/lbs @ 3750 RPM
Max Rec. RPM: 5100 RPM
Compression Ratio: 8.5:1
Heads: Cast Iron 76 cc Chamber - 1.94 Intake valve/1.5 Exhaust valve
Camshaft Lift: .450 Intake /.460 Exhaust
Flat Tappet Duration @ .050" (222°Int/222° Exh)
Lifters: Flat Tappet
Connecting Rods: Powdered Metal
Block: 4-bolt main
Pistons & Pins: Aluminum
Crankshaft: Cast Iron Nodular, 3.480" Stroke
Rocker Arm: 1.5
Ignition Timing: 34° BTDC total advance
Fuel: 87 octane
PRICE 1999.99

Last edited by GUITAR1989; 08-28-2012 at 02:16 AM.
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