"HIGH OCTANE" Jeep 4.6-4.7 Stroker Engine Package
For those who want the stoutest most reliable 4.6-4.7 liter street Jeep stroker available on the market that still retains factory manners and dependability as long as you don't mind running premium octane fuel hence the name. We have done our research and developed an elite engine package that utilizes our custom made hypereutectic pistons and lightweight rings with the highly desired 6.125" (Long)rods, with 10.0:1(66cc open chamber), 10.3:1(63cc closed chamber), 11.4:1(55cc Edelbrock aluminum head).
You may ask why Hypereutectic pistons and not forged? For a naturally aspirated engine that see's daily driving and hot rodding in all types of weather you can not beat a well designed Hypereutectic for quiet operation, excellent long life, anti-scuffing and sealing ability. To this point there has not been a hypereutectic option with a 6.125"(Long) rod option so we made one and created a new animal. From the factory the original 4.2(258) started life around 100hp to eventually topping out around 190hp by the 4.0(242). "HIGH OCTANE" at 4.6-4.7 liters is another animal all together, on our dyno this package pumped out 366hp and 373ftlbs of torque with one of our less aggressive cams. With this package we can custom tailor the cam to suite your needs and bring the power in where you want it.
Recommendations: Intake/Intake/Intake did we say Intake, to totally utilize this package we recommend an extremely ported stock intake manifold or custom setup(Sheetmetal) with an oversized throttle body(These are not mandatory items just recommended), header with 3" collector and a custom tune is MANDATORY with 91 octane minimum. Manual transmissions require clutch upgrade such as Mcleod or Centerforce. Automatic transmissions say a prayer then prepare for a moment of silence unless built or shift kit(Except AW4's, if they are healthy they seem to hold up well).
***Every single engine that is built and sold through Newcomer Racing(least to most expensive) has the minimum following items performed during the build process: All Blocks are Ampro baked and SS shot blasted, magnufluxed, deburred, bored and torque plate honed, line honed, decked for proper quench, full rotating assembly balancing, every single bearing is checked and set to size, cam and lifters deburred and polished, heads resurfaced, guides honed to size, competition valve job, spring install heights set accordingly, cam preload or lash set, high zinc break-in oil used during the engine dyno session, new break-in oil installed before it ships to your location.
***Engine builds once order is placed are running between 1.5-2 months on build time as of 04/01/25
"MEGA TORQUER" 4.8-4.9 Stroker, where the torque junkies get their fix.
The "MEGA TORQUER" offers even more killer bottom end and midrange power, yet still having great top end power thanks to our Competition Cylinder Head. When you want that low end, stump pulling grunt, with all around great drivability, this is your build with a power band from Idle to 5500rpm's with a slightly noticeable idle. This package will include a 4.060" steel crank, forged full floating 6.125" rods, main girdle, baffled oil pan, billet timing set, micro-polished custom cam and lifters, long lasting quiet custom designed, fully floating and coated hypereutectic pistons w/lightweight 1.2/1.5/2.5mm rings for low drag, long life performance, 10.0:1(66cc Open chamber/Iron head) or 10.3:1 (63cc Closed chamber iron head) or 11.2:1(55cc Aluminum Edelbrock) compression set with proper quench set for a pump gas friendly combo, fully adjustable 1.7 ratio(Newcomer) next generation lightweight roller rocker arm setup with custom HD pushrods, our custom billet valve cover spacer package with a factory valve cover for proper fit and evaporative functions.
We recommend the following supporting mods: Intake manifold port match, Throttle body boring and taper porting, Header, 36lb(EV1) or 47lb(EV6) injectors(Depends on injector style), Cold air intake, 2.5" minimum exhaust tubing, Upgraded Clutch(Mcleod/Centerforce), Automatic upgrades depending on style(Stock converters work well on all), Custom tuning(Even on stock vehicles there's always gains), We recommend "Flyin Ryan Tuning" or in house tunes on builds.
***Every single engine that is built and sold through Newcomer Racing(least to most expensive) has the minimum following items performed during the build process: All Blocks are Ampro baked and SS shot blasted, magnufluxed, deburred, bored and torque plate honed, line honed, decked for proper quench, full rotating assembly balancing, every single bearing is checked and set to size, cam and lifters deburred and polished, heads resurfaced, guides honed to size, competition valve job, spring install heights set accordingly, cam preload or lash set, high zinc break-in oil used during the engine dyno session, new break-in oil installed before it ships to your location.
***Engine builds once order is placed are running between 1.5-2 months on build time as of 04/01/25
"Torque Monster" 4.6-4.7 Stroker, for those who want it all without sacrificing any of that bottom end grunt!
The "Torque Monster" has quickly became our best seller. It offers killer bottom end and midrange power with out killing the top end power thanks to our Competition Cylinder Head upgrade. When you still want great drivability and road manners with that all around awesome power band this is your build with a power band from Idle to 5500rpm's with a slightly noticeable idle.
The base package will include a lightweight crank for those quick revs, Resized short rods w/ARP bolts, main girdle, baffled oil pan, billet timing set, micro-polished custom cam and lifters, long lasting quiet hypereutectic pistons w/lightweight rings for low drag, long life performance, 9.7:1 compression set with proper quench set for a pump gas friendly combo, full 1.7 adjustable(Newcomer) roller rocker arm setup with custom HD pushrods, our custom valve cover spacer package with a factory valve cover for proper fit and evaporative functions. We spray every build with the customer chosen paint color or in stock colors.
We recommend the following supporting mods: Intake manifold port match, Throttle body boring and taper porting, Header, 24lb injectors, Cold air intake, 2.5" minimum exhaust tubing, Upgraded Clutch(Mcleod/Centerforce), Automatic upgrades depending on style(Stock converters work well on all), Custom tuning(Even on stock vehicles there's always gains), We recommend "Flyin Ryan Tuning" or in house tunes on builds. Every single motor is dyno proven with a video and power numbers, a complimentary T or Sweat shirt w/hat.
*All engines will be shipped bare unless our custom high quality custom paint option is applied from the options list. ***As of 12/01/21 any engine build turning over 5,500rpm's will be required to have an ATI damper due to engine speeds on the dyno for our safety and yours.
***Every single engine that is built and sold through Newcomer Racing(from the least to most expensive) has the minimum following items performed during the build process: All Blocks are Ampro baked and SS shot blasted, magnufluxed, deburred, bored and torque plate honed, line honed, decked for proper quench, full rotating assembly balancing, every single bearing is checked and set to size, cam and lifters deburred and polished, heads resurfaced, guides honed to size, hardened seats, competition valve job, spring install heights set accordingly, cam preload or lash set, high zinc break-in oil used during the engine dyno session, new break-in oil installed before it ships to your location.
***Engine builds once order is placed are running between 1.5-2 months on build time as of 04/01/25
"300HP" 4.6-4.7 Jeep/AMC "Stroker" inline 6 cyl engine package.
Only a few left!
The "300HP" 4.6-4.7 liter is our entry level engine package and they normally make between 290-320hp/320-340tq with an excellent power band from idle to redline. All of our engine packages are custom hand built to spec, work well both Fuel injected or Carbureted. These engines are all upgradable with additional available options from below.
This package has a factory iron head with hardened valve seats that have a competition valve job with a full bowl blend, Rollmaster double roller timing set, custom hydraulic cam kit, stock stamped steel rocker arms with a stock valve cover and stock harmonic balancer. Compression will be 9.9:1 and it will work on regular pump gas. Your tuning will dictate what octane you will need to run to avoid detonation issues
*Recommendations for upgrades- Walbro 255 fuel pump, 24-36lb injectors, upgraded header w/2.5" collector and exhaust minimum!, intake porting, bigger throttle body, upgraded radiator, upgraded motor mounts(Drivers side mount that bolts on the block MUST have increased bolt count over the factory three bolts to keep from breaking block from added power, passenger can stay stock), cold air intake and last once everything is upgraded have it properly custom tuned then everything and everyone is happy. Every motor is dynoed with a video and power numbers. All engines will be shipped bare unless our custom high quality custom paint option is applied from the options list.
***Every single engine that is built and sold through Newcomer Racing(least to most expensive) has the minimum following items performed during the build process: All Blocks are Ampro baked and SS shot blasted, magnufluxed, deburred, bored and torque plate honed, line honed, decked for proper quench, full rotating assembly balancing, every single bearing is checked and set to size, cam and lifters deburred and polished, heads resurfaced, guides honed to size, competition valve job, spring install heights set accordingly, cam preload or lash set, high zinc break-in oil used during the engine dyno session, new break-in oil installed before it ships to your location.
***Engine builds once order is placed are running between 1.5-2 months on build time as of 04/01/25