big hudson flat head INFO/WANTED

Unknown
edited November -1 in HUDSON
hi all,lets start by telling you what i have ,a 1933 hudson terraplane 5 window ,rumble seat coup,and i think it was a 8,the car was purchased by my father in the condition i have it now,the body ,doors,rumble seat lid,hood ,front grill shell,and frame is all hudson orig,it was rought into a hot rod ,floor cut out and dropped 4in,firewall cut out,frame modified to fit a chevy 327 400 turbo auto and i think a old chevy rear end .What i was thinking to do was find a flat head engine for it other than the chevy but not a ford i know hudson came out with at the time was great flat heads but need some info on what one to look for i think the best was the 308 hornet(6 cly ?) also i would be looking for a motor if any one knows where any motors are avaible,since the car is cut up so far i think it would be cool to go all hudson route as a rod,any info on parts 33 or what do you think i should do with it,i have pics ill try posting,thanks Andy

Comments

  • Ol racer
    Ol racer Senior Contributor
    I would suggest installing a modified Hornet 6 cyl (308) then adapt to a modern GM Turbo Trans, maybe one of the OD Units. There are large valves, different cams, modern double roller timing chain sets, manifolds and more available from different sources for the Hornet. Any reputible machine Shop can do the work.



    One Engine performance resource with Trans adaptors is from Randy Maas maasfh@ntslink. General rebuild parts are available from Dale Cooper @ www.hudsonmotorcar.com and others.



    With the resurgence of Flathead Powerplants lately your coupe would sure be a crowd pleaser with Hornet power....
  • hi,hornet 6 sounds good but going to go with 4/5 sp and yes i do know about the adaptors are ava,what years are these motors and what is this 7x motor ive read about? also i think smokie had something to do with hudsons any info thanks Andy
  • 33 terraplane wrote:
    hi,hornet 6 sounds good but going to go with 4/5 sp and yes i do know about the adaptors are ava,what years are these motors and what is this 7x motor ive read about? also i think smokie had something to do with hudsons any info thanks Andy



    Here is a link to uncommon engineering.



    http://www.uncommonengineering.com/catalog.html



    If you ever had a doubt about how potent a 308 can be, then check out their applications. There are few guys on this forum that build top quality and very fast engines and for much less than uncommon engineering.



    As far as info on the 7X engine, use the search function on this forum and look under 7X engine, etc. There is alot of info in those threads. In a nutshell, the 7X was a "severe use" engine that could be ordered thru the dealer but not direct from the factory. These engines were used in police cars and in racing. High compression 232 head, factory header, big valves, 1/2 inch stud head bolts, 7X cam, knurled pistons, etc. It put out somewheres about 210- 230 HP (possibly more?) compared to the 'Modern V8's" of the day of around 165HP.



    I applaud you wanting to put Hudson power in your rod. It will make your car much more interesting at the shows and it will haul a**. Niels
  • If I were you I would put a Chevrolet back in it. IF you want to go anywere except in a straight line. All that weight in the front will make it handle like a brick. Things like plowing in corners. ETC. and make a unpleasant ride. If you have a 113" wheelbase, your car could have been a Terp 8. Hornet engines are more of a torque engine as opposed to a horsepower engine, so are more suited to larger cars, but do your own thing.
  • tombia wrote:
    If I were you I would put a Chevrolet back in it. IF you want to go anywere except in a straight line. All that weight in the front will make it handle like a brick. Things like plowing in corners. ETC. and make a unpleasant ride. If you have a 113" wheelbase, your car could have been a Terp 8. Hornet engines are more of a torque engine as opposed to a horsepower engine, so are more suited to larger cars, but do your own thing.



    Don't know about weight but hot rods are big engine, little car. Hot rods only handle in a straight line anyway. Tons of documentation of Hudson success on the drag strip. Put a Chevy or Ford in it and lull the crowd to sleep....
  • Ol racer
    Ol racer Senior Contributor
    FYI

    I guess I am lucky to have built a couple of Hudson Hot Rods now. My '47 Hudson is the typical Chevy Powered Rod with 2 4bbl's etc and after a couple Cruise In's people just walk by, but my '37 Hornet powered home built Rod gathers a crowd at every Cruise In because its very different ocassionally embarrasing my friends 'check book' purchased Street Beast type high dollar Rods......... So I say go with Hornet Power....
  • wow getting some good info and drowlling over a 308 7x motor just need to find some more info on what hudson trans (manual) and rear will hold up to it,im not looking to really race it just making a fun driver out of it ,thanks everyone for the help so far
  • tombia wrote:
    If I were you I would put a Chevrolet back in it. IF you want to go anywere except in a straight line. All that weight in the front will make it handle like a brick. Things like plowing in corners. ETC. and make a unpleasant ride. If you have a 113" wheelbase, your car could have been a Terp 8. Hornet engines are more of a torque engine as opposed to a horsepower engine, so are more suited to larger cars, but do your own thing.



    hi,does anyone know what the weight is on a 308 ,also the firewall on the car was cut out i can move the motor back a little to get some better front /rear weight ,thanks for all the info
  • the 308 weighs around 700lb. go to www.wilcap.com they do a muncie adaptor for the 308, thankyou for wanting to use 3 pedals!
  • hornet53
    hornet53 Senior Contributor
    How about 3 pedals AND 3 shift levers?





    I want one of these babies behind a blown, ported, and bored 308
  • 33 terraplane wrote:
    wow getting some good info and drowlling over a 308 7x motor just need to find some more info on what hudson trans (manual) and rear will hold up to it,im not looking to really race it just making a fun driver out of it ,thanks everyone for the help so far
    Hi---I have a 0.90 overbored 308 sitting in my garage that belongs to a club member (Mark Buttles) that I know he would be delighted to sell if you are interested. Love to get it out of my garage. Cliff Minard.
  • I think someone missed the mans point. He wants a fun car and that means drivable, not something that just sets so people can look at it, and be impressed. That only lasts for awhile anyway, before they get bored. Thats kind of a dumb thing to do. Olracer has his engine in a reasonably heavy car, so that works well. But putting a 700# weight in the front of a 2500# car does not. Its called weight bias. As far as a 7x, It is really nothing more than a blue printed Hornet and can be duplicated by any good automotive machinest. I had a small block Ford in my 33 for 10 years and it was a complete ball to drive. Now it has a 8 cylinder Hudson in it AND it does handle like a brick. Like I said if you only want to empress someone(which is silly). Go for it.
  • i really wanted to put a 308 in my 31 essex. i thought it would be the coolest thing ever. ten i saw one in person. they look like a cummins 6bt. forget that . huge. heavy. i didnt start building the car yet but went with a rover alum. v8.
  • he has also stated the firewall is cut and is not afraid to set the engine back to minimise the effects of putting a large slug so far up front. another interesting point i'd like to make- use the hash 55/56 308/transmission for this- the bellhousing is longer- setting the trans even further back, and it has a 1 1/8" input shaft, a major improvement over the 7/8" stepdown unit.

    if i ever use a 308 for a drag car, (oh how id love to) thats how i will do it.
  • essexcoupe3131
    essexcoupe3131 Senior Contributor
    I thought that the 32-33 was the best power to weight ratio of any car in that area, and that had been raised on another thread even with 700 pounds?



    Mike
  • terraplane8
    terraplane8 Senior Contributor
    essexcoupe3131 wrote:
    I thought that the 32-33 was the best power to weight ratio of any car in that area, and that had been raised on another thread even with 700 pounds?



    Mike



    The '33 Terraplane Eight had the lighter straight eight engine which would weight a lot less than 700lbs.
  • terraplane8
    terraplane8 Senior Contributor
    tombia wrote:
    I think someone missed the mans point. He wants a fun car and that means drivable, not something that just sets so people can look at it, and be impressed. That only lasts for awhile anyway, before they get bored. Thats kind of a dumb thing to do. Olracer has his engine in a reasonably heavy car, so that works well. But putting a 700# weight in the front of a 2500# car does not. Its called weight bias. As far as a 7x, It is really nothing more than a blue printed Hornet and can be duplicated by any good automotive machinest. I had a small block Ford in my 33 for 10 years and it was a complete ball to drive. Now it has a 8 cylinder Hudson in it AND it does handle like a brick. Like I said if you only want to empress someone(which is silly). Go for it.



    Have you tried a rear anti-roll bar and/or stiffer rear springs to reduce front understeer? I guess the Hudson engine has the weight further forward and higher up as well as being heavier. In fact the Ford 289/302 is a good non-Hudson choice as it is a lot lighter than the alternative Chev small block and of course its centre of mass sits further back than the straight eight as it is shorter. But there is nothing like a good H8 of course for driving enjoyment and flexibility. I'm just thinking with the suspension tuned as suggested and decent tyres that should lessen the handling problem compared to the lighter Ford engine.
  • Put the 308 behind the front seat and then you'll handle like a Lotus..... LOL
This discussion has been closed.