Dyno Session: Chrysler MOPAR 318 Stroker | Can We Get Over 430 hp and Over 450 Lb-ft of Torque?

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Dyno Session: Chrysler MOPAR 318 Stroker
Can We Get Over 430 hp and Over 450 Lb-ft of Torque with Iron Heads?
After flogging Pop LA-Phant build, it was time to see how much power our 390 is making. This engine will be the heart of Project Fast Fish.
318 to 390 Stroker
Block:
Chrysler LA
318
.030 bore
3.94” bore each cylinder
Heads:
MOPAR 360 Heads
Gasket matched and ported
Massaged Valves
186 / 202
COMP Cams Roller Rockers (1.6 ratio)
Rotating Assembly:
Balanced
Crank:
SCAT 9000 Series
4” Stroke
Pistons:
Diamond 50001
Flat Top
Rods:
Scat 4340 Pro Comp
I-Beam
Cam:
Crane 694561
528 lift
504 in w/ 302 duration with factory rockers
528 out w/ 312 duration with factory rockers
RPM Range 3000 - 6500
Intake on video:
Edelbrock Performer (This was swapped for a Performer RPM in a later episode)
Carburetor:
Quick Fuel SS-830
Mechanical secondary
Helpful Link:
Summit Racing Engine Running Stand 918015 // bit.ly/35IbXpY
Some of the things used to produce our episodes:
Canon EOS M50 Camera // amzn.to/35QSLXh
Rode Video Mic Go // amzn.to/3uZCtDX
DISCLAIMER: This video description contains affiliate links. This means, Mic’s Motorworx and On The Mic Entertainment may receive a small commission when you click on one of the links above. It’s OK to share the love.

Опубликовано:

17 янв 2023

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Комментарии : 80

@NilesJStJohn Год назад

The 318 is truly a hugely underrated engine for making solid torque numbers and some good Hp . The blocks and bore stroke combo is pretty darn good. They rev well and if you get a 68-74 block you have a baby 340 block as far as metallurgy and strength. I am doing a strong 392 stroke combo myself right now for my 68 Dart 2 dr sedan. 🎉🎉🎉

@ragingbull3406 Год назад

Interesting. My 414 made 461hp@5300, 511ft;lbs@3900. Pulls hard as hell from the low end. Will destroy some tires. I've got a 4 speed Duster. Enjoy!

@michaelsulpizio606

The more I look and listen, which is what my good ol-Dad told me to do at a very young age I learn great things! I received a street rod way back when I was building hot rods for a So-Cal franchise in Colorado Springs! It was a 1949 Plymouth business coupe. Which had an 8” ford rear end in it , and a “get this” 1975-80 AMC Pacer front clip, with a 318 and a 904 trans. The motor seemed pretty tired when I received it and everybody said they were pretty mediocre or less motors! You know the old adage there is no substitute for cu-inches! Most all the 400 or so cu-inch 318s kick ass! After watching many adept mechanics and Dyno tuners test these little motors it has become more tantalizing to me ! Especially after watching yours. With iron heads !? Wow it’s north like it’s a heavy as car! And I have a new found respect for the street racers that did this conversion! I love the car because it is what I cut my teeth on back when I was starting out in the business, taking auto shop in high school back in 62. I’m now retired , I’ve had the car for over 20 years , and really wanted to pro street it , which of course I can’t afford! So this will enable me to rebuild this 318 , stay light , and have a hell of a lot more fun with it! Thanks guys! I’ve got to watch the building videos, I’m stoked!!! Regards Mike S.

@GrantOakes Год назад

If you're simply looking for a really streetable motor, you nailed it. Nearly 500 lbs of torque is very respectable. If you're wanting more from this engine it could use more cam, preferably a Hughes Engines getting closer to .600 lift and their Big Mouth port job. You'd probably get into the low 500hp range.

@autonomous_collective 12 часов назад

454hp / 497 ft lbs Torque... 318 Stroker =390ci.

@danbuchner1494

Terry Brighton built a 390 that made 535 and 535 trq at 5300 rpm

@looneylonzo28

I took my 85 dodge ram charger 318 out went 30 over SRP flat tops 10,000s out the whole with the smaller combustion chamber 302 casting head with a 52 to 54 cc chamber pump cam 236/242@50 490 lift@110 Edelbrock air gap Holley 750 produce 421 hp at 6100 RPM and 440 torque at 5200 RPM. It was a great engine although it was a struggle with those heads for higher RPM I switched up to a set a 360 heads and I could make more RPM but I lost horsepower and torque roughly about 30 horse is just under 40 in torque I restart engine for three years after I drove it on the streets for a couple years but I finally clearest the cylinder walls. I got a little greedy on timing. It did not like 37°. I’ve since then built a 372 and I did a 421 in.³ stroker all still utilizing cast-iron heads. I like a good square motor yawls motor is definitely gonna be a torque monster being it’s under square I know that helps tremendously with the weight of higher piston speeds. what machining did you do to the head? Did you deck the block? How much did your deck the heads? What’s your static compression or overall compression?

@icetech6 Год назад

Very cool... i have a 318 i'm building for the summer and hoping to do a 390 for next year if i can find a machine shop i can trust in the detroit area (bad experiences with "Good" shops)...

@jayrina3594 Год назад

GENTLEMEN... IS THERE ANY POSSIBILITY THAT YOU CAN TELL ME HOW MUCH COSTS FOR A 318 CID CHRYSLER ENGINE MODIFIED TO REACH APPROXIMATELY 350 HP WITH ALL THE EQUIPMENTS (NEEDED)... WHAT ABOUT THE (VALIDITY)???...( ACTIVITY)??? CONCERNING THIS ENGINE... SUCH AS (MILEAGE).....(LIFE ENGINE)....

@autonomous_collective Год назад

Compression ratio? LCA?