67autocross
A new iron curtain drawn across the 49th parallel
i have a chance to pick up a stock bore 340 block with no main crank caps... what are my options or just move along..,
340 Block no main caps
- Thread starter 67autocross
- Start date
-
Plymouth 65
I'll be in the shop
Buy new caps and have it line bored! 65'
$250 for caps
$500 for the align bore and hone
Maybe an it's a big maybe you can find used caps you can use.
$500 for the align bore and hone
Maybe an it's a big maybe you can find used caps you can use.
Rocket on this site has some aftermarket main caps for a 340, if you are interested. Do an advanced search in mechanical parts for sale under his name "Rocket".
Alaskan_TA
Well-Known Member
If it's cheap with no other issues - maybe.
How people lose something as important as main caps machined for one certain block will always be a mystery.
How people lose something as important as main caps machined for one certain block will always be a mystery.
Wyrmrider
Well-Known Member
what's the bore
lifter bores rusted?
lifter bores rusted?
67autocross
A new iron curtain drawn across the 49th parallel
Stock bore ...block is at a local machine shop it was hot tanked and pressure tested...then they noticed that the caps were wrong. The guy who brought it in though you could just mix and match caps and had sold off the originals with other blocks.
Alaskan_TA
Well-Known Member
That mistake just cost him some money.
rustycowll69
Well-Known Member
mine were lost(stolen) by machine shop.
Even if you dont use the block... Post the numbers on the side of the block.
There are people looking to reunite their cars with their original engines.
I've been looking for my car's 340 engine for years now. Long shot but i keep trying. Sold in upstate NY years ago to a guy in Canada. Never found out why.
Syleng1
There are people looking to reunite their cars with their original engines.
I've been looking for my car's 340 engine for years now. Long shot but i keep trying. Sold in upstate NY years ago to a guy in Canada. Never found out why.
Syleng1
skrews
Well-Known Member
Once the caps are lost the block's value is almost nothing, as the cost of replacing/machining the caps will add up to near the cost of another block.
My local shop charges $180 to line bore, thread below has ductile caps for $220
[FOR SALE] - 340 and 360 4 Bolt Ductile Iron Main Caps - New
[FOR SALE] - 340 and 360 4 Bolt Ductile Iron Main Caps - New
PRH
Well-Known Member
Most shops charge noticeably more than the “std” line bore job if they’re installing aftermarket caps.
That’s a pretty good deal on the caps though.
That’s a pretty good deal on the caps though.
67autocross
A new iron curtain drawn across the 49th parallel
ValiantRacing
Well-Known Member
Go to wrecking yard and get some 318 caps, they are not as big, but they will work, unless your trying to build a 550hp engine.
You can try 50 sets of used caps and still not find a full set that line up correctly.
Buy a new set and do it right.
512Stroker
We are all here because we are not all there.
You just cant fix stupid!
67autocross
A new iron curtain drawn across the 49th parallel
I’m going to see if I can find a rear cap that is close over the weekend and if I can I will likely buy the set for sale here and use the front four caps and do a line bore... my machinist said he is not interested in cutting the groves in the back cap for the seals.
SLOPAR72
Well-Known Member
I myself have a standard bore 340 missing the caps. Same deal. Someone needed the caps and they were gone.
I never put a value on it but this thread makes it sound as if it's a boat anchor... Dang....
JW
I never put a value on it but this thread makes it sound as if it's a boat anchor... Dang....
JW
Wyrmrider
Well-Known Member
standard bore 340 not a boat anchor
some do aftermarket caps anyway
and
it might be a matching number stash depending on year
there are those that pay up for a 340 where a 360 would work
Now where is a 340 demonstrably better?
some do aftermarket caps anyway
and
it might be a matching number stash depending on year
there are those that pay up for a 340 where a 360 would work
Now where is a 340 demonstrably better?
Krooser
Building Chinese Free Engines since 1959...
They don't make 'em anymore so you need to decide if you want to fix 'em. Me? Anything is valuble. My last Hemi build had five sleeves...
For those who are going to scrap those blocks I'll pay the shipping or I'll pick them up most anywhere in the midwest. Seriously... would you toss out Raquel Welch if you could rebuild her like new?
I have a Gen3 Hemi block with a busted block... this will be my test engine for next racing season.
For those who are going to scrap those blocks I'll pay the shipping or I'll pick them up most anywhere in the midwest. Seriously... would you toss out Raquel Welch if you could rebuild her like new?
I have a Gen3 Hemi block with a busted block... this will be my test engine for next racing season.
SLOPAR72
Well-Known Member
I kept mine because until I close this chapter of my life (hot rodding) there is no gain in me getting rid of it.... Caps come up for sale but you have to do the usual (timing, position, patience....)
And I have had a few PM's about selling it. Must mean this thread has a few less than stellar Bullet points in it lol....
JW
nm9stheham
Well-Known Member
The 340 produces a LOT more slobbering from the non-motor builders; a 360 cannot touch it in that department LOL
-
