Rod Knock!!! SOB why me
Thread Starter
Burning Brakes
Joined: Sep 2003
Posts: 875
Likes: 0
From: Louisville KY
Rod Knock!!! SOB why me
I got the stethescope out and found out the #8 piston/rod is knocking like a mother 
. Time to pull her out. 
. I have some really sh*tty luck. I haven't decided if i'm going to rebuild or go with something else yet...
How bad are the internals when you get a Knock? What can I expect when i pull this thing apart? The engine was shut off when the knock ocurred and was started up for a total of maybe 3 min to check Torque converter, flexplate, and engine.
Aslo, i'm going to get rid of my 180cc ported/polished Dart IE's. They have aobut $500 worth of work done to them. I dont want to get rid of the springs, but if you need them I may throw them in. They only have about 1500 miles on them. I paid $1350 for the work and heads. They are $1000 new assembled without any work done to them.
On the engine i had (in my sig) i pulled on a 400 hp C5 until 60 mph then he started creeping away (thanks to my 2.73 gears). Make a reasonable offer if you're interrested. I should have them off by this comming weekend with some pics. My email is scott.owen@***.net Thanks
. Time to pull her out. . I have some really sh*tty luck. I haven't decided if i'm going to rebuild or go with something else yet... How bad are the internals when you get a Knock? What can I expect when i pull this thing apart? The engine was shut off when the knock ocurred and was started up for a total of maybe 3 min to check Torque converter, flexplate, and engine.
Aslo, i'm going to get rid of my 180cc ported/polished Dart IE's. They have aobut $500 worth of work done to them. I dont want to get rid of the springs, but if you need them I may throw them in. They only have about 1500 miles on them. I paid $1350 for the work and heads. They are $1000 new assembled without any work done to them.
On the engine i had (in my sig) i pulled on a 400 hp C5 until 60 mph then he started creeping away (thanks to my 2.73 gears). Make a reasonable offer if you're interrested. I should have them off by this comming weekend with some pics. My email is scott.owen@***.net Thanks
Le Mans Master
Joined: Jul 2001
Posts: 8,183
Likes: 3
From: Santa Maria, CA
I noticed your sig engine description mentions speed-pro pistons. Forged or hypers?
I used speed-pro hypers in my 355. Had the knock after around 20K. Turned out to be this:
...and 2 more that cracked in the same area.
*Edit: I drove like that for a few hundred miles, competed in an auto-x event, and a drag day too.
I used speed-pro hypers in my 355. Had the knock after around 20K. Turned out to be this:
...and 2 more that cracked in the same area.
*Edit: I drove like that for a few hundred miles, competed in an auto-x event, and a drag day too.
Last edited by pablocruise; Aug 28, 2005 at 10:36 PM.
Thread Starter
Burning Brakes
Joined: Sep 2003
Posts: 875
Likes: 0
From: Louisville KY
Originally Posted by 89 Paul in Cal
I noticed your sig engine description mentions speed-pro pistons. Forged or hypers?
I used speed-pro hypers in my 355. Had the knock after around 20K. Turned out to be this:
...and 2 more that cracked in the same area.
I used speed-pro hypers in my 355. Had the knock after around 20K. Turned out to be this:
...and 2 more that cracked in the same area.
I have those same pistons... the 10.5:1 ratio... thats not cool
Race Director
Joined: Feb 2004
Posts: 12,518
Likes: 19
Originally Posted by kpforce1
Holy CRAP!!! I have those same pistons... the 10.5:1 ratio... thats not cool
I have those same pistons... the 10.5:1 ratio... thats not cool
Drifting
Joined: Nov 2003
Posts: 1,637
Likes: 2
From: Honeoye Ny
http://cgi.ebay.com/ebaymotors/SBC-C...temZ7994226981
These (along with custom pistons) will fix it. Come to think of it, wiseco might have an off the shelf piston for that application. 355 Right?
These (along with custom pistons) will fix it. Come to think of it, wiseco might have an off the shelf piston for that application. 355 Right?
Thread Starter
Burning Brakes
Joined: Sep 2003
Posts: 875
Likes: 0
From: Louisville KY
What pistons should I use? I'm going forged for sure. Something that will give me around 10.5:1 C/R in a 350 with stock bore and 64cc aluminum heads. Mahle, SRP, Ross, Speed Pro, Weisco...? I know I was pushing 400 in my motor before based on how hard it pulled and how it performed agains my buddies 400+ hp C5. With a set up ported/polished Dart Pro1 215cc heads, forged pistons, 10.5:1 C/R, and every thing else the same in my sig what kind of numbers should I see? Thanks
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Thread Starter
Burning Brakes
Joined: Sep 2003
Posts: 875
Likes: 0
From: Louisville KY
Originally Posted by CFI-EFI
Stock 1984-'85 pistons should get you close. They're 9.00:1 with 76 cc heads and they are forged. Those 215 cc heads are too big for street use on a 355.
RACE ON!!!
RACE ON!!!
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by kpforce1
so should I go with 200cc heads then?... Guess i could always have another $500+ done to the heads i have now, i just wanted to go to aluminum heads instead of keeping the Iron.
RACE ON!!!
Thread Starter
Burning Brakes
Joined: Sep 2003
Posts: 875
Likes: 0
From: Louisville KY
What would be the problem with having 200cc heads (i'm good with cams and every thing else, not heads.. lol)? What do you have on your car? Would it benifit me to get 185-195 aluminum non ported/polished heads or have more work done to the 180cc Dart Iron Eagle's i have now? I never had a detonation problem (engine would sputter some what every once and a while if hot and i shut it off... but that was it, no pinging).
