sycsteve
Well Known Member
Thanks. They told me when I ordered it. But I had to ask. I've read it really doesn't make much of a difference in street engines. Mostly for oval and strip.
'61 Biscayne 348 stroker resto rod
- Thread starter sycsteve
- Start date
'59Imp
Well Known Member
Hi Steve, welcome to the club!
Nice looking '61 you have too!
I have a 348 in my '59 Impala, looking at converting her to a 409. I have a thread here titled "Converting a 348 into a 409".
So you say you bored out your 348. Mind me asking how much? I am looking at boring my 348 block to a 409 block and I'm trying to find out if that is possible...
Thanks.
Nice looking '61 you have too!
I have a 348 in my '59 Impala, looking at converting her to a 409. I have a thread here titled "Converting a 348 into a 409".
So you say you bored out your 348. Mind me asking how much? I am looking at boring my 348 block to a 409 block and I'm trying to find out if that is possible...
Thanks.
Steve,those springs are with in the lift range as advertised by Edelbrock,HOWEVER,have the installed height.and pressure checked and adjusted as necessary.There have been numerous posts about the pressures being all over the place!Most guys with the higher reving ,higher hp engines say DO NOT run them.A call to comp will tell you what you need in a higher quality spring.
Jackie,Steves 440 inch 348 comes from a .060 over bore [4.185] and a 4 inch stroker crank/In order to increase the bore size in a 348 to the 409 bore size[4.3125] you'd need to bore the engine .187 oversize.Most,but not all 348 blocks simply can not be bored out that far.Even those that do don't have enough material left for a future rebuild.That's why so many of us go the stroker route for extra power.
'59Imp
Well Known Member
Wow, how do you get a 440 c.i. when it seems impossible just to go with a 409 c.i. because of the overbore issue...
Yeah, I'm now thinking about going down the stroker route now.
You can stroke a 348 with a 409 crank, a 396/427 crank, or a 454 crank. Each one gives you a bit more cubes, and thus the other factor becomes the bore size. Best to sonic check your 348 to see just how far you can safely bore. Some of the later 348s (1963-4-5) allegedly have a bit more "meat" in them and might be good candidates for that larger bore.
My 348 stroker is based on the 409 crank, BBC rods and custom Ross stroker pistons. I calculate 380 cubes for that .60" over block with a 409 crank. That works for me.
Good luck!
TomK
My 348 stroker is based on the 409 crank, BBC rods and custom Ross stroker pistons. I calculate 380 cubes for that .60" over block with a 409 crank. That works for me.
Good luck!
TomK
'59Imp
Well Known Member
I don't want to hi-jack Steve's thread here so I'll keep it short and simple... I have a better thread that goes into further detail (Converting a 348 into a 409). I titled it that when I was still looking at converting over to 409 which I have now learned is impossible... Now it goes into detail of hopping up my 348.
Thanks for the info about how to stroke a motor. Cause I had no clue!
I believe the 348 is a '59.
Does it give you a good amount of horsepower the 348 stroker you have set up?
Thanks for the info about how to stroke a motor. Cause I had no clue!
I believe the 348 is a '59.
Does it give you a good amount of horsepower the 348 stroker you have set up?
sycsteve
Well Known Member
Not sure what your budget is but you can get an aluminum 409 block for $5200 now. I'd have to look it back up but I found one on the Internet.
sycsteve
Well Known Member
I bought everything for the rotating assembly from show cars. I'm figuring around 500h.p.
sycsteve
Well Known Member
With the block rotating assembly and everything else I'm pushing $7k.
sycsteve
Well Known Member
I read the same thing on Chevy talk. I just wanted to be sure from some other sources Better safe that sorry sense I've spent this much.
sycsteve
Well Known Member
You should be able to build a mild engine for less. I just went a little overboard with forged parts and rods. Just short of a race engine. The have cast rotating assembly that are half the price.