Register now to get rid of these ads!

Customs 318 performace build

Discussion in 'The Hokey Ass Message Board' started by 510, Apr 11, 2016.

  1. 510
    Joined: Apr 11, 2016
    Posts: 4

    510

    I am rebuilding my dodge 318 v8 for drag racing as well as a daily driver. What all can I do to my engine to get the most out of my little 318?
     
  2. Squablow
    Joined: Apr 26, 2005
    Posts: 18,499

    Squablow
    Member

    Is it an early (poly) 318 or a later (LA) 318? That'll make a huge difference as to advice given.
     
    chessterd5 likes this.
  3. Jimmy2car
    Joined: Nov 26, 2003
    Posts: 1,707

    Jimmy2car
    Member
    from No. Cal

    Get the Chrysler Performance Manuals from the 80's.
    They have it all laid out in various steps
     
  4. k9racer
    Joined: Jan 20, 2003
    Posts: 3,091

    k9racer
    Member

    mopar purple stripe cam can not be beat. Get a MOPAR Hot ignition box add light weight springs in the distributor. Check clearance on the reluctor. set on the wide side of specs. a 4 barrell intake with a 600 carb. I would not go larger. Good plug wires and distributor cap. The 318 will suprised you how quick it can go. Now for a little bit more money find a set of 89 up 360 swrill heads. the 360 has larger valves. Have a 3 angle valve job done. The last part cost some more money but well worth it. I got a 360 crank had the mains turned to 318 size. I used dish pistons and had the tops turned down flatt have a 8 to 10 thousands deck clearance. This way you get 350 cubic inches with a 30 over bore. I also installed the pistons back wards because of pin off set it had a longer dwell at top dead center.
     
  5. 73RR
    Joined: Jan 29, 2007
    Posts: 7,342

    73RR
    Member

  6. 510
    Joined: Apr 11, 2016
    Posts: 4

    510

    It was taken out of my 87 dodge ram so I'm guessing poly?
     
  7. 510
    Joined: Apr 11, 2016
    Posts: 4

    510

    I have no budget but some simple quick upgrades to get more horsepower is the path I mostly want to follow, however I am also willing to take the more expensive path.
     
  8. Squablow
    Joined: Apr 26, 2005
    Posts: 18,499

    Squablow
    Member

    That would make it an LA 318, poly engines were used up to the mid 1960's.
     
  9. 1951oldguy
    Joined: Dec 5, 2013
    Posts: 32

    1951oldguy
    Member
    from Arkansas

    Good advise given above. I'll second the Mopar Performance Manual advice, Chrysler engineers were a great source of engine building information.....they designed, build and raced em.

    I've been a small block Mopar guy since 1970, that's when I bought the 70 340 4 speed Duster that's over in the shop. Back then we had zero respect for 318's as performance engines, but as a tow truck engine....they'd run forever. My advise is spend a little time looking for a hens tooth engine, a 1968 to 1971 340. Reason for those years is they were 10.5 compression engines and even though the factory rated em at 275 hp, they usually made more like 325 to 340 hp at the flywheel. NHRA rated them at 325, we raced 396 Chevys heads up in stock cl***es and normally won.

    Like I said, they're hard to find these days, but you never know (I sold a complete running 70 spec steel, crank engine to a bud last month for $500.00). A stock rebuild will get you more than you'll likely ever see from a mid range performance build of a 318.

    Good Luck, Ron
     
  10. j walking
    Joined: Feb 4, 2010
    Posts: 188

    j walking
    Member

    change heads to 340-360 and a purple cam with headers, alum. intake and a 650 carb. Used this in my duster with shift kit and 3.91 gears went 13.17 in quarter.
     
  11. 510
    Joined: Apr 11, 2016
    Posts: 4

    510

    Thank you for all your help guys really appreciate it!!!
     
  12. 1951oldguy
    Joined: Dec 5, 2013
    Posts: 32

    1951oldguy
    Member
    from Arkansas

    http://www.enginebuildermag.com/2014/09/breaking-rules-392-magnum-engine-build/

    Just checked out the attached link. DAMN, if this has been duplicated (sometimes magazine engines seem to have a little unobtainium in em), this is one interesting build. I haven't been involved in many years, good to see how things have progressed.

    I'm on the verge of starting work on the Duster (1970, 4 speed, 3.55 gear car) it has a fresh engine from 1988 with about 2,000 miles on it. I did a pretty complete freshen up job back then, paid 2500 for a great lacquer paint job and it's mostly been a garage queen since then. Last drove in 2006. The build above makes me want to rethink my original engine....may be time to bring it into the 2016's.
    rr
     
  13. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 9,756

    Rusty O'Toole
    Member

Share This Page

Register now to get rid of these ads!

Archive

Copyright © 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.