CobraMarty

Check here for actual real dyno results.
Strokers will put out less HP/TQ than stock 4.0 with 6 pounds boost.

http://jeepm62superchargerkit.blogsp...-jeep-40l.html

Hayden98XJ

Some stroker builds will put out more than 211 horsepower.

Outlaw Star

Bingo. But then again charging it costs about the same as a quality stroker build, so pick n choose which one you want.

mr white

But it would be more difficult to do a stroker I'd suspect. Although you'd probably have more low-end on a stroker.

Outlaw Star

Stoking any motor properly is a task in itself. If simplicity/easy route is your thing, go charger. There's a lot of work involved in making sure an engine is setup properly.

RubberSideUp

You can't beat the supercharger's resale value either.

CobraMarty

These are the real world actual numbers, not any internet opinions/hearsay. "Just the Facts' -Dragnet

193rwhp/236rwtq ?dyno, 'Gradon's stroker' from old post, 4.6L, 30cam, ported head
202rwhp/258rwtq Dastek dyno, 'Cheromaniac's' '92 4.6L 'poor man's stroker' '01 intake 65mmTB 9.25:1 5sp header ported head

211rwhp/292rwtq Dynojet Boostwerks Turbo 6psi 4.2 MS 4.0head
201rwhp/263rwtq ?dyno 240k 4.0 T3/T4 turbo 6 psi tapering to 3-4 psi by redline(boost leak) 36 lbs injectors 99+ intake
202rwhp/265rwtq Dynojet '95 Wrangler turbo 6-7 psi 12:1FMU boostapump meth inj
210rwhp/249rwtq ?dyno Banks 4.0L Turbo 6psi '05-06 Wrangler +66HP/+84TQ 35lb injectors, AutoMind tune, CAI
211rwhp/268rwtq DynoDynamics dyno '97 XJ M62 Supercharger Kit installed 6psi (crank 300HP/375TQ)
211rwhp/274rwtq mustang dyno '98 XJ auto 4WD160k sprintex supercharger 6 psi(crank 300HP/375TQ)
212rwhp/278rwtq ?dyno TurboJeeper '90 Renix 4.0 60-1 turbo 1.15a/r 5psi 5.9L injectors FMU 12:1(stock 142rwhp/228rwtq)
212rwhp/295rwtq Dynojet Boostworks Turbo 6psi 4.2L bored to 4.3L Megasquirt 99+intake

Hayden98XJ

I've still yet to see dyno results for a long-rod stroker compared to the charger. And the strokers you show dyno sheets for are still running the stock camshaft (a larger cam would give quite a bit of power) and you didn't bother copy/pasting the 4.9L that makes quite a bit more hp and torque than what your supercharger is putting out. The supercharger is great but unless your engine was just recently rebuilt to run a supercharger it's going to take away from some of the life of the engine. The stroker is a completely new engine and you can get 200,000 miles or more out of it if built right. Compared to the life of an already over 200,000 mile 4.0 that is getting a charger strapped on it. I just don't know how long the stock 4.0 pistons can handle producing that much power.

4.9L*stroker*ported BV head 470 carb stock Clifford intake Newcomer Racing
(256rwhp/268rwtq est)361hp@5400/377tq@4800*engine dyno,*4.9L stroker*ported BV head bigger carb intake + headers

CobraMarty

MP -30 cam in Gradons and ported head.
Non street/OBD legal carb engine, near max effort by Newcomer.
OK, compare apples and elephants.

Hayden98XJ

I can't say i've read Gradon's build thread. It seems like you've put quite a bit of effort into maxing out the power of your setup. It seems like the supercharger would produce less power without all the tuning and modifications you've done to yours. No apples or elephants here just having conversation.

CobraMarty

I only posted the 6 psi numbers as that is what the kit does out of the box. Both the sprintex and the M62 and most of the turbo builds are right around that 6 psi. That is a great spot for ease and reliability.

On our sprintex system we did pump it up. At 12 psi we popped a head gasket on a 160,000 mile engine. Replaced with a MLS gasket and new head bolts and ported big valve head and picked up 30 hp, boost is now about 10-11psi. Yet to dyno but expect around 265-275rwhp and 325rwtq.

If you ever get a chance to go for a ride in a supercharged 4.0 you will be more than surprised. My son rode in Gradon's and was impressed but it wasn't as powerful as the M62 kitted RaceJeep.

Outlaw Star

I'd love to slap one on my 4.9, sounds fun.

Hayden98XJ

They say an M90 is better suited for a stroker's power output but that's if you want to come up with your own routing and such.

CobraMarty

sorry double post.

CobraMarty

Now that would be awesome, a stroker with a supercharger.

stroker average 195rwhp/250rwtq + supercharger about psi/17 %

195/250 x 6/17 (35%) = 263rwhp/337rwtq + drivetrain loss 25% = 350crankHP/450crankTQ at only 6 pounds boost