Years back in 1971 I had a 61 impala conv. with a 348 Had the same valve covers. A friend had a 409 . Never saw one with the head off. Weird design
Sleeving 340 for a Stroker kit
- Thread starter matt030305
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It is unconventional to say the least.
Chevy's first attempt at a big block. Strange design for sure.
mygasser
Well-Known Member
you can imagine the gm design meeting where one of them started with ''what if we....''
My 348 Impala was faster then my Dads 62 poly 318 plymouth. I sold the 61 Impala Conv. I couldn't afford a new roof after the rear window fell in. The engine always ran perfect.
RAMM
Well-Known Member
What method did you use to get them out? J.Rob
RAMM
Well-Known Member
I had to sleeve this blown up DIRT engine last week. The DART SHP block has surprisingly short cylinders. I only left about .100" for the step on the major and minor thrust sides but the rest of the sleeve can be seen hanging below. It went surprisingly well--about .0025" interference fit. As stated heat the block/freeze the sleeve slides about halfway in nicely and then some light hammering with a thick aluminum puck drives it home. This is one of my least favorite operations-lol. J.Rob
Newbomb Turk
Well-Known Member
When done correctly like this you can't even tell a sleeve was installed.
In college we sleeved a Vega block. That was back in 73' and no one had done that yet, that we knew of. We went to the Aircraft shop and borrowed their big oven to heat the block and froze the sleeves with freon. Yep, R12. That was a long time before someone said it ate a hole in the ozone. Well if that was true, there is a huge hole right above the community college now. 
The sleeves literally dropped in to the stop.
The sleeves literally dropped in to the stop.
I bored them till they were .015" wall, then used a small old dull flat screwdriver to start them peeling out. I have a block mounted VN 944 boring bar, so I had to use a file to level them with the deck first.
RAMM
Well-Known Member
You are right on the money with the peeling out part. No need to waste time boring first though. I use a very sharp .250" Dia, long ejector pin and just rip a line right up the middle. Super slick and easy. Probably have 6 removed from a 354 in 15-20 mins. Try it. J.Rob
I think the 409 is pretty cool. Weird, yes, but cool. For similar reasons I also like other engines of the era.
Ford FEs with the strange intake manifold that doubles as half of the valve cover gasket. Neato!
Any of the Cleveland 4v headed engines. Super cool.
Poly 318s are pretty cool too.
Max wedge high ports come to mind...
Ford FEs with the strange intake manifold that doubles as half of the valve cover gasket. Neato!
Any of the Cleveland 4v headed engines. Super cool.
Poly 318s are pretty cool too.
Max wedge high ports come to mind...
Thanks, I'll remember that for sure.
427 ford Tunnel Port
All are weird and different. Cool is the early Hemi's. I have a less than complete 241 Dodge. No why would they design a Hemi so small. And I thought my 273 was small. Like Ford's 221 v 8. Like the 273, it was a little screamer.
340six
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One of my mom and dad's best friend's who were life time friend's frim way back in high school. Mr. Larry ran a 409 with the 6 2bbl Offy intake in a Tri Five Chevy. Still had lots of stuff so saw plenty of it. He also had old films 8mm? Of track runs at the Old Laplace, Louisiana Drag way.
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4eighteener
Well-Known Member
The daimler dart's 2.5 (158 cubic") hemi was even smaller. They said the took the design from triumph, but it looks more like a 1st generation hemi, and even named it the dart (until dodge objected), so probably trying to ride on coat tails
Ii ask steve if he ever did a 348 or 409. He did , I must have missed it. Must have been when I was laid up. I would have remembered that weird block.
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