360 and 340 stroker engines?

[Dustbuster]

ok who's tried that setup from Diamond racing?? i think 408 cubes from a ultra cheap junkyard block would be awesome!!! i haven't seen any dyno buildups but i'll bet you'd have "oodles" of torque!!



DUSTBUSTER

[Dart]

I think the critical area of improvement would with the heads. I think that the Edelbrock SB heads would be a good addition to the 408 cube SB. No way the stock heads will get the job done as they are not designed to for that much cubic inch. They are also resonably priced ($1250).

I have seen the 408 reciprocating assembly (Eagle rods, KB pistons, and the 4" crank) for $1000. Just need a good block and some heads.

That combo should scream!! Let us know what you do.

[jimm II]

Like the top of post said , I'm also a Big fan of the 408,416,and 422 small block. Any of these combs with W5 heads would be wild IMO,
Not to change the subject, these combinations have a rod/stroke ratio of 1.53 very similar to 454 shivy.eng.
Mother mopar has some Very good ratios with 340 and 360
1.85 and 1.71 respectivly. How about some more imput from those more experianced out there. Will the bigger cubes hold up as well or better at higher RPM's.....? Jimm II

[Dustbuster]

yah i know how to build a 360 (punched .03 over) to 470hp (gotta love car craft)

i was just wondering with longer stroke if you could draw more air fuel in during the intake stroke thereby creating more power...

i saw a 350 chevy engine with a stroker and EFI with alum heads and the usual mods producing 615hp on a dyno

now if i had 615hp pumpin from a small block on 92 octane...no one would be safe

DustBuster

[cuda66]

How about 408 HP and 440#'s of tork out of a 318..hehehehheeee

"Happiness is stomping a BBChebby with a 318 Mopar"

You should have seen them scratchin' their "Sit-ons" yesterday hahahhahahhaaaa

Don

[jimm II]

cuda66: Those are some major woop ass numbers out of a 318 .
Now you got me currious , HOWWW!
Would have been something, to see the looks on some of the faces. HEHEHE....! Jimm II

[cuda66]

It's secret ..If I told you I'd have to kill ya..hahhahaaa

The best one was a 32 duece coupe with a 396 BBC...whooped him so bad in the first time trial he moved over to the sportsman lane hahahhahaa

He must have stood there afterwards and stared at that 318 for 20 minutes trying to figure out how he got beat so bad by a door slammer with all the interior and a 318...hahhahhaa it was worth every dime I spent just to see him standing there with his mouth wide open catching fly's.

Like a calf at a new gate....hahahhhaaa

Don

[Dart]

Cuda66 - I want more info on this 318. Give me all the details!!

[Big Daddy Don]

Is this the "Fish Fry" Cuda from Woodburn Dragstrip????

Baaaadddddd A$$$$$$$$$$$$$$

[Dustbuster]

come on cuda66 don't tease us like that!!

i know it must be possible to get 300hp from a 318 (1 hp per cube) but that extra 90 some ponys i'd love to find in my smog hog!!

i've seen a 340 done up to 391hp and 412lbs of torque, with everything stock cept for cam, carb, and exhaust now thats IMPRESSIVE!!

come on tell us tell us tell us!!

DUSTBUSTER

[Duster_340]

comom cuda66--fess up or we'll wine and snivvel like shivvey boys!!

[PLUM CRZY]

Mega-horse 318's....see the MP engines manual. They have a 14sec all the way to a 9.80 sec 318 build up.....the question is why??? for the same money you can do a 360 and have more HP.

[Big Daddy Don]

Just checked out the cuda66 web site. it is the car from Woodburn. that thing is cool I love watching it jerk the fron wheels up on the launch. My buddies are all Fird guy's and even the take there hats off when that thing pull up to line.
Good job cuda my hats to you, see you sunday? I'll try and make it by 1 oclock.
BDD

[Dart]

One thing about buliding a 318 is the steel crank. You cannot build the 360 as radically without buying a $1000 crank for the 360 or doing something else to it.

[Dustbuster]

ummm Dart...not that i am calling you a liar or anything but the 318 never had a steel crank....the 340 did and they are interchangeable but the 318 never had a steel crank, and also i've never in my life seen someone break a crank....it just doesn't happen! i mean i'm sure that if you were gonna do 16:1 compression run it off of Alchy and have a 500hp pro fogger shot of nitro you'd want a forged crank....but i've never seen/nor heard of a crank breaking

DUSTBUSTER

[jimm II]

Sorry Dustbuster; But the 318 did come with the forged steel crank. I have two 318-3 forged steel truck cranks on the shelf in the garage.The 340 steel cranks just had differnt balance for the heavyer rods and pistons .The 318 cranks we used in our stock car years ago but had to rebalance for new rods and pistons.
And they can be welded and stroked, have a machinest thats good on cranks.

[cuda66]

Quick note here....and correct me if I'm wrong....

To my knowledge....as limited as it may be... I believe the 273/340 steel cranks are identical to the 318 cast crank and interchange..however the the 360 crank has different size main journals and will not fit a 318 /340/273 block which BTW all have the same stroke.

Unless......of course, you cut the block bigger or cut the mains smaller.

Broken cranks...you bet! but mostley on BB Chebbys...they break the snout off, SB Chebbys....I broke a bunch of them Sprint car racing over the years....although only one ever came out in 2 pieces mostly just cracks.

The man to talk to would be CrankShaft Specialties in Memphis Tn., Doug would know for sure.

Don

[Brian_wo]

Never had a steel crank in a 318?

wonder who put the steel cranks in the ones I pulled out,there is one at a local yard here right now.


Anyway I am building a 416 right now,I am starting off with a 1971 360 block and punching it .070 over,tossing in that MP (chinese) crank with Eagle rods and Ross pistons swinging from it,should prove to be interesting in a 1900 # 1969 1/2 cuda with a 4-speed.
with a zero deck and 65 cc heads I'm looking at 9.8:1 compression.

[Dustbuster]

ok finally someone whos actually doing what i really wanna do! (actually i wanna try EFI on a stroker )

ok so what was the grand total on the rotating assembly?

how much block work has to be done?

uhhh whats the rest of engine layout? (carb, cam, head work? etc..)

thanks for your time man!

DuStBuStEr

[HEMI-DEMON]

Ive got a 69 Barracuda with a 318 and Id bet U 100 to 1 its got a steel crank

[Brian_wo]

guess we all will have to hold on for the rest of the info

So far I found the Eagle rods on ebay for $469 shipped to my door and the Ross pistons came from Muscle Motors for $500 to my door,the mp crank was about $300 and I picked up a 1971 360 block for $50.

Right now the plans is to put Edelbrock heads on it but thats only if my money doesn't run out and it is
I just bought an Air Gap intake from carparts.com for $215 to my door and I will probably try my Holley 9310 on it,my machinest just got an engine dyno so when the motor is all together it's going on the dyno,then when it gets in the car I will take it to the chassis dyno so what it then has at the real wheels.

Oh and cam selection is still up in the air.

One last thing,rumor has it that to get this to balance it takes about 250 grams of weight,that means about $350 to balance internally so I am going to buy a new 360 balancer and drill the flywheel to get this to balance externally.

last but not least,the 416 is going in here.

[Walkercolt]

I'll throw some extra confusion in! The Magnums have the same size journals in the 5.2 and the 5.9's. I'm thinking of getting Barton to build my 5.2 into a 6.4(393cid). They swear they are bulletproof on the street and tooooooorque out the ying-yang! BTW, you can get long rods for the stroker small blocks...you get more HP and torque and less engine wear(less side thrust). They ain't cheap, and you probably can't go above 400 cid. Ray Barton's got 'em in his catalog....$$$$$ Remember, if you're gonna be serious about a stroker SB, you should consider either a "race" SB or a Magnum block. Both have more metal where you need it worst, and they are'nt 30 year old castings. I hate to see a guy spend mega-bucks on a build-up and then the thing breaks from a $100 salvaged block....that's what Chebbies are for!

[71swinger340]

The 318 did use a steel crank in 67' and all the poly motors used steel cranks also.

[Dart]

Umm Dust buster...

The 318 isn't steel? If i remeber correctly the 360 was the only one with the cast crank the 340 and the 318 were steel.

[Brian_wo]

later 340's also had cast cranks.

[Brian_wo]

One more piece of the puzzle showed up today

http://members.home.net/amykennedy/416/intake/

[Darn Dart]

All 318's up until about '71-'72 had steel cranks. '73 was the first year 318 that I have seen with a cast crank. I have a '70 318 two barrell out of a Fury III that I know has a steel crank, because I checked it out when I tore it down.

[HEMI-DEMON]

I guess I'm gonna have to break down and build one of these small block stroker motors cause these big blocks are putting me in the poor house. I got a 76 360 that would make a nice stroker, given that I don't go crazy on the over-bore. Anybody tried the aluminum small block heads from edelbrock? What kind of heads R U going with Brian_wo? A good set of heads will bring that stoker to life. By the way, thats a good looking barracuda you got there. I ve got two, both fastbacks, one with 318, the other 440 stroked to 496. Id really to put a hemi down in it, but hey, a man gotta eat right? HAHA

[Brian_wo]

I want to buy a set of the Edelbrocks but I have been spending money like I have it so I may have to use the X heads off the 340 for now
I sure hope not because my plan is to put the engine on the dyno,then get it in the car and run down to the local chassis dyno and see what that says.

[cuda66]

Wow lots of discussion on this topic....
My 2 cents worth from a guy who drives one evey Sunday.

The crank as near as we could figure is made by SCAT...and not made in China.

The Air Gap Manifold....you'll love it!

318 Steel or cast crank who cares if your building a stroker you won't need it.

Eagle rods are I believe made in China, finished in USA for content and avoiding tarrifs...they should come in a bucket so you will have something to put all the pieces in. We tried them once in Sprinters and they cost us WAY! more money than we saved. My money for rods is on Oliver or Carrillo...people I can trust to keep their quality control to highest standards possible.

The Ross pistons are good, I've used them before with no problems. I used ARIAS this time around, they helped out a bunch with info, advice and a special deal...so far no complaints and their decal remains in the correct position on the front fender.

Eveyone have a great week, we're taking the weekend off (Div 6 Race) We'll be back cutting them down at the light in 2 weeks Saturday Point race and Sunday the local Mopar Nationals.