Go Back   Mopar Forums > GENERAL > Engines, Exhaust and Fuel systems
Sign in using an external account
Register Forgot Password?
Search

Engines, Exhaust and Fuel systems Sponsored by CARiD
Click Here

Reply
 
 
 
submit to reddit
 
LinkBack Thread Tools Search this Thread Display Modes
Old 11-21-2011, 04:38 PM   #1
New Member
 
Join Date: Nov 2011
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
318 - 390 Stroker

I am the proud owner of a Dodge W200 (M880) with a 318, and i am currently rebuilding it. Frame done, rust done, so engine is next on my to do list.

So here is my problem, iwe been trying to get all the knowledge i can from the net, been reading everything i can find about the 318 engine. And it seem to me like its a good strong engine to rebuild. How ever the net is an extremely hard place to get a strait answer. The normal engine rebuild threads start out fine, but very quickly turn into chaos, bickering or personal preferences.

I kind of have my heart set on a rebuild of my old 318,nd turning it into a 390 stroker, i know it might be easier/cheaper to rebuild a 360, but old v8 engines are very hard to come by here is the state of Denmark. And getting a crate engine from the US would cost an arm and a leg, plus a small fortune and taxes =)

I have loads of questions but no one to ask, since i have the misfortune of living in Denmark (Scandinavia) where there are not than many people who know jake about old v8 engines.

So my question is this:
Is a stroker engine a wise choice for a big heavy truck like mine (about 4200 lbs)?

Could you build a "mild" 390 stroker with something resembling the reliability of my old 318 (original engine from 76)?

What are the pros and cons of a stroker engine vs a "normal" size crank?

Should i skip the idea and just rebuild it more like a stock 318?

Any feedback would been very welcome =)


Dvinge
Bacto is offline   Reply With Quote
Old 11-21-2011, 05:41 PM   #2
Mopar Fanatic
 
John Van's Avatar
 
Join Date: Jun 2009
Location: Rensselaer,New York
Posts: 422
Thanks: 0
Thanked 7 Times in 6 Posts
Bacto, Welcome to the forum! A stroker engine is ideal for a heavy truck,more low end torque than stock. But, a stroker rotating assembly is expensive! Yes they can be reliable. It might be better just to keep it stock. I only do big blocks,so hopefully some one who knows small blocks will chime in!

good luck, john
__________________
Beer is proof that god loves us and wants us to be happy- Ben Franklin


John Van is offline   Reply With Quote
Old 11-21-2011, 06:19 PM   #3
Mopar Lover
 
Coronet 500's Avatar
 
Join Date: May 2011
Location: Ontario Canada
Posts: 1,351
Thanks: 0
Thanked 158 Times in 151 Posts
The cast 390 kits seem reasonable and a good idea. I like the idea of the 3.94" bore over the 3.79" stroke for 370 cubes, although I've only seen the 4340 expensive ones. If you were going for big power in a hot rod I'd think twice because of the cylinder shrouding of the 2.02" valves. Your truck with 1.88" or 1.92"s with a proper sized manifold, carb and cam would yank that thing along like a bull. With a good trans and final drive combination I think it is a GREAT idea. Look at a Hughes main girdle for some additional bottom strength. I was a Big Block guy but love my 318s now.
Coronet 500 is offline   Reply With Quote
Old 11-23-2011, 01:11 PM   #4
PK1
Mopar Lover
 
PK1's Avatar
 
Join Date: Jul 2011
Posts: 681
Thanks: 8
Thanked 105 Times in 104 Posts
Great looking truck!

For a heavy truck stroking is an excellent choice.
Stroke kits are VERY reliable.
Should you just rebuild your 318? That's preference..

Since you mentioned cost I will assume you have a budget that is decent but don't want to waste money.

The 318 will swallow the 4.00 stroke and with the 3.94 bore you are good to go. RPM machine has an unbalanced kit for 999 or so? I havent checked in a while but its close to that..

4200 lbs isnt that heavy for a daily driver for a 318 IMO. And the 318 with some good inexpensive mods could make BIG power and make that truck fun yet still functional. The 318 is often over looked but they are a very good motor. 400HP is obtainable with 318 without getting exotic.


Think of the motor as nothing more that an air pump. Air in / Air out.
When you up stroke you will need a lot more air and a lot more exhaust. Stroking a motor with stock heads, cast iron manifolds, stock cam, and intake will actually hurt performance. The power band will be very low and your usable rpm range will stink.

If your motor just needs rings, bearings and gaskets then i would rebuild it and use your funds on headers, intake and heads. You need heads, intake and exhaust to get the stroker to work as intended anyway.

Grab a cam from a regrinder like Hugh's. Cheaper than new and they work well. Add an airgap from edelbrock and some rhs or eq heads. Long tube headers and enjoy...

When that goes or you need to replace the rotating assembly I would stroke it.
PK1 is offline   Reply With Quote
Old 12-15-2011, 04:38 AM   #5
New Member
 
Join Date: Dec 2011
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
strokers are cool

I have been doing a lot of research on this very thing. I came across this web site and this is what i am going to do. http://www.popularhotrodding.com/eng...e/viewall.html If you are willing to do some hunting you can have a 318 with big horse power that is cheap.
bsalyer79 is offline   Reply With Quote
Old 12-15-2011, 04:38 AM
MoparForums
1970 Dodge Challenger




Paid Advertisement
 
 
 
submit to reddit
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
1974 Brownish/Goldish D300 390 stroker/auto TK1 Member's Rides 8 10-11-2010 11:42 PM
360 or 390 stroker? i need help xjonathanx General Discussion 8 09-28-2010 07:21 PM
318/390 Stroker TurboSwinger New Members 12 04-01-2010 06:49 PM
318 stroker ryan_e General Technical Questions 28 03-24-2009 08:08 PM
318 to 390 stroker oil pan?? dartswinger84 General Discussion 0 10-10-2008 12:44 PM


All times are GMT -7. The time now is 06:37 PM.


Advertising - Privacy Statement - Terms of Service - Jobs

Content Relevant URLs by vBSEO 3.5.2

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88