Ive bought a Hemi I' ve decoded with help from your boards on here as a Industrial 331 with 354 heads Am I right or am I making an error
Pretty sure they didn't make 331s in '56. Changed to 354s as smallest hemi that year. Also pretty sure 354 was the 'standard' indusreial engines in late 50s? You probably have a factory 354. Check bore. 3.8125" (3 13/16") is 331, 3.9375" (3 15/16") is 354.
My '56 truck engine is a 331. It has the proper code (VT-448) stamped on the top of the block. I sure wish it was 354.
Let's see a pic of the timing chain area. There were two different 354 covers. One of them covered water holes. Hot heads offeres both covers.
Going to pull the motor apart, hot tank it with heads and rocker gear, if its ok and not much wear, hone, then new cam, rings, shells. any help on what cam to use, little bit more power but this is for a Kustom not...... racing, he says
On a cam talk to Bob @ HH. He'll ask about a bunch of factors. As was mentioned above check out the Hemi tech Index if you haven't.
I didn’t see a pic but make sure it doesn’t use timing gears. I believe the crank is machine differently and won’t except a traditional chain set. I have two industrial Hemi’s and both have chains and the only gear drives I’ve seen were marine but some people say that the industrial engines could have them. Sent from my iPhone using H.A.M.B.
Yeah I guessed that was possible, engine is n England, all parts will have to come from U.S.... duty and shpping gets expensive
How reliably will these take an 1/8" overbore? I only went .060" on the advice of my machinist on the '54 New Yorker engine in my dirt modified. Can you do it with confidence without sonic testing?
In theory they can go .125, but I wouldn't w/o a sonic check. Personally I like to have as much cyl wall as possible.
Bob asked CID, C/R, tranny, rear axle ratio, weight of car, what you want to do..cruiser, racer, rumble around town, ect. He sent me a Howards cam and it was cheaper than buying direct, at least at that time.
There is no real advantage in cutting the holes an 1/8 of an inch unless you need the additional inches or a slight c/r bump. You could use std bore 354 pistons. 1956 pistons with a 56 head will be around 9:1 or so. If you need more c/r, go straight to forgings. Generally, the Industrial and Truck engines have lower c/r than does the Pass car; yours is likely around the 7.5 mark. As to cam, since you are at a fairly low c/r in stock form then you should stay very conservative with lift and duration. Isky is a good choice and their prices seem to be reasonable if you are buying direct. They may, or may not, ship outside of the US. If you are doing some cleanup work then pay particular attention to the condition of the rocker assemblies. Remove the plugs from the ends of the shafts before hot-tanking them and then be sure to clean out all of the fairly small feed holes in both the shafts and the rocker arms. You may want to do one side at a time so that you have a finished example for reassembly. Send an email if you need additional help. .
piston 1 and 7 are very stuck at moment crank out and have a good look lots of penetrating fluid or Coke
Oof, a mess. Hopefully the block and crank are okay. Look at it as "opportunity." You get to upgrade rods and pistons! Looks like it was already .030" over...
Are the rods bad ? The Hemis had excellent rods from the factory,,,,no reason to not reuse them unless it is going to be a very high HP engine. I guess it depends on what you have planned ? Judging by the chamfer on the crank oil journals,,,it might have been turned as well,,,,,might be able to just polish it and keep the same size journals. Tommy
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