650hp from a 348 block
- Thread starter jr.W
- Start date
Jim, Thanks for the reply. My questions were probably inappropriate. None of my business, but , gee, I am really excited about your purchase. That Pontiac is gonna fly........
Jim
Congradulations, that should make plenty of power for your Pontiac.
Bill
Congradulations, that should make plenty of power for your Pontiac.
Bill
Thanks everybody!
bang
Ronnie, I certainly don't mind answering questions.
It's always nice to get a new engine.bang
It doesn't look like we'll have time to do a proper job on the Pontiac but we will have it rolling in time to bring it to Thompson. It won't take long to install a roll bar and safety equipment. The body work can wait. I think it'll be fine for one year with a kind of primered "rat rod" look.
I'm sure we'll have a chance to get it out for a test and tune session in the spring. I think it would be neat to drop the engine in and run it exactly as it is to see how many mph it runs. If we've got the chassis working right it SHOULD run about the same as the 55 Chevy. ( 10.40's most of the time ) This engine should have more power than the one in the 55 but the Pontiac's heavier. Mid tens would be great
but high tens would also be ok.
This engine peaks at 6,900 rpm so it'll probably want to be shifted at about 7,400
That's going to take some getting used to but should sound good going up the track.
It'll probably be a few weeks before I see the engine but I'll be sure to post some pictures when it gets here.
bangRonnie, I certainly don't mind answering questions.
It's always nice to get a new engine.bangIt doesn't look like we'll have time to do a proper job on the Pontiac but we will have it rolling in time to bring it to Thompson. It won't take long to install a roll bar and safety equipment. The body work can wait. I think it'll be fine for one year with a kind of primered "rat rod" look.
I'm sure we'll have a chance to get it out for a test and tune session in the spring. I think it would be neat to drop the engine in and run it exactly as it is to see how many mph it runs. If we've got the chassis working right it SHOULD run about the same as the 55 Chevy. ( 10.40's most of the time ) This engine should have more power than the one in the 55 but the Pontiac's heavier. Mid tens would be great
but high tens would also be ok.This engine peaks at 6,900 rpm so it'll probably want to be shifted at about 7,400
That's going to take some getting used to but should sound good going up the track.It'll probably be a few weeks before I see the engine but I'll be sure to post some pictures when it gets here.
10's with a 348....incredible...I've been fantasizing about 12's with my lil 348, might be time to recalibrate my dreams......Is there anybody out there running a quick 348 ? better yet what is considered quick for the 348 ? This is definitly going to be a fun build to follow 
Tim
Tim
On line pages
Nice 348 you got there!
http://hotrod.automotive.com/117814/hrdp-0911-chevy-w-series-engine-build/index.html
Nice 348 you got there!
http://hotrod.automotive.com/117814/hrdp-0911-chevy-w-series-engine-build/index.html
I just saw this article on the build as a link on the Show Cars web site. For anyone who hasn't seen the article, it is at the bottom of their Home page. http://www.show-cars.com/index.html
Who has this 348 now Jim and Jim?
Don
Who has this 348 now Jim and Jim?
Don
I believe that they still have the engine, although it came apart some time ago. I recall parts have been "redistributed" for other builds?
I'm sure they'll chime in with an update.
TomK
I'm sure they'll chime in with an update
.TomK
Like Tom said, the parts have been redistributed.
That engine ran great but there was a problem with the cam which caused some damage. (it ran a best time of 10.37 in the 55 Chevy)
When the cam went it took a small chip out of one of the lifter bores, so we put all the top end from the Sherman 348 on to another 476 ci 409. That engine ran a best time of 10.10 in very good conditions.
Right now I have a high compression 481 block ready to go with the crank from the Sherman engine in it. We did upgrade the rods because the bigger pistons are heavier that the ones used in the 348 stroker. This 481 will get all of the top end from the Sherman engine. This engine will have more compression and a bit more cam so I'm expecting it to run about ten seconds flat and probably break into the nines on a good day.
That last engine will be going together soon. I'm not sure but we might even bring it in and dyno it.
Here's a link to the article about the Sherman 348 stroker...
http://www.hotrod.com/how-to/engine/hrdp-0911-chevy-w-series-engine-build/
That engine ran great but there was a problem with the cam which caused some damage. (it ran a best time of 10.37 in the 55 Chevy)
When the cam went it took a small chip out of one of the lifter bores, so we put all the top end from the Sherman 348 on to another 476 ci 409. That engine ran a best time of 10.10 in very good conditions.
Right now I have a high compression 481 block ready to go with the crank from the Sherman engine in it. We did upgrade the rods because the bigger pistons are heavier that the ones used in the 348 stroker. This 481 will get all of the top end from the Sherman engine. This engine will have more compression and a bit more cam so I'm expecting it to run about ten seconds flat and probably break into the nines on a good day.
That last engine will be going together soon. I'm not sure but we might even bring it in and dyno it.
Here's a link to the article about the Sherman 348 stroker...
http://www.hotrod.com/how-to/engine/hrdp-0911-chevy-w-series-engine-build/
