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Home / Parts Department / GM Performance Parts |
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GM Performance parts offer factory built high quality and reliable performance engines. There's a GM Performance crate engine available for your high performance needs! Why build one when you can buy one?
Built by the people who know performance and back it with a 12 month warranty! Why use anything else?
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3.4 HT 160 HORSEPOWER
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350 HO
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350 HO DELUXE
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ZZ4 - 350
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RAM JET 350
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Part #
12499120
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The all-new 350 horsepower Ram Jet 350 from GM performance parts makes it easy to have electronic fuel injection on any vehicle originally equipped with a carb. The Ram Jet 350 is an assembled 350 crate engine with Vortec heads, Ram Jet induction system, wiring harness, MEFI 3 controller and detailed instructions. Once installed in the vehicle, a user needs only to supply 12V power and fuel.
Please note the fuel pump recommendations are in the Ram Jet instruction manual.
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FAST BURN 385
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HT 383
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Part #
12499101 (previously # 12497317)
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Specially tuned for torque, the all new HT 383 delivers great truck power in a small black package. With its 3.8" stroke and Vortec cylinder heads the HT 383 makes awesome torque, down low where you need it for towing or four wheeling off road. Peak torque is 415 ft. lbs. at 3500 RPM, but the HT 383 makes over 400 ft. lbs. from 2500 to 4000 RPM.
Developed as a truck engine, with a truck grind roller cam, heavy duty forged powdered metal connecting rods, forged crankshaft and hypereutectic pistons the HT 383 is designed to be worked. 325 horsepower at 4500 RPM doesn't hurt either. The HT 383 is an ideal replacement for any older carbureted truck engine.
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454 HO
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502 HO
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ZZ 502 / 502
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502 / 502 Long Block Kit
12371204............
CALL
Assembled
12496963............ CALL
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The king of all big block crate engines is the ZZ 502 / 502, with torque and horsepower that will have you grinning and streetable manners that will have your competition wondering what hit them.
The ZZ 502 / 502 represents our latest and best efforts to develop awe inspiring big block power in a dependable, durable and driveable big block crate engine. With its big valve aluminum heads, roller camshaft and complete dyno tuned induction and ignition systems, this is as close as you come to a custom built 502 at crate engine prices.
For those who like to grind on the heads, change cams, mill for compression or whatever, we've left it only partially assembled. Make no mistake, everything you need is there, but you don't need to disassemble anything to make head mods or intake swap. It really is the best of both worlds. Bolt it together and go, or tweak it to meet your specific needs.
It's like someone at GM Performance Parts has been there, and we have.
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502 / 502 Complete Kit
12371171............
CALL
Assembled
12496962............ CALL
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RAM JET 502
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Part #
12499121 (previously # 12497323)
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The Ram Jet 502, you either have one or you want one. With 502 horsepower at 5100 RPM and 565 ft. lbs. of torque at 3200 RPM, the instantly throttle responsive Ram Jet 502 drives like no other big block you've ever driven. With over 500 ft. lbs. of torque from 2200 to 5200 RPM, the Ram Jet 502 is a tire-shredding monster.
Designed for ease of installation the Ram Jet 502 needs only 12V ground, fuel feed, and return to run.
Included are an instruction sheet, service manual and diagnostic tool for ease of installation and service.
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HT 502
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Part #88890534
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The key to towing performance is torque and the HT 502 crate engine has a whole lot of it. Not only does this crate engine make torque, but it makes it right where you need it, way down low.
With 502 ft. lbs. of torque an incredibly low 2800 RPM and 338 horsepower at 4500 RPM, this will climb hills.
Accelerate onto the highway and pull out to pass with the sort of confidence that you've come to expect from a GM Performance engine.
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