wanted to post dyno #'s, but instead I messed up my LT1
Re: wanted to post dyno #'s, but instead I messed up my LT1
Originally Posted by Z28LT1_Just_Nasty
That sucks! How did the call to the dyno place go?

Thanks a lot Bret, thats what I wanted to know. At least I didnt do any thing wrong, other than trust the guy selling me parts.
Re: wanted to post dyno #'s, but instead I messed up my LT1
Originally Posted by SStrokerAce
No the problem is who sold you the parts.... if you have never put that setup on a LT1 head before and checked install height then you could get into serious trouble. My math on your setup definately puts that into coil bind, which is what caused that. If that was a dual spring the SAME THING WOULD HAPPEN!!!! IrocSS85, no matter what you are going to destroy a motor if the wrong parts go in and setup the incorrect way and cause this, it's not the springs fault.... it's the parts that went with them and the install.
I've said this before and I will say it again.... just because you have a deal with Comp Cams for parts DOES NOT MAKE YOU QUALIFIED TO PICK OUT PARTS/CAMS/VALVETRAINS FOR A MOTOR.
If this was all done right then you wouldn't have to rebuild the motor.
It sucks but thats the truth.
Bret
I've said this before and I will say it again.... just because you have a deal with Comp Cams for parts DOES NOT MAKE YOU QUALIFIED TO PICK OUT PARTS/CAMS/VALVETRAINS FOR A MOTOR.
If this was all done right then you wouldn't have to rebuild the motor.
It sucks but thats the truth.
Bret
Re: wanted to post dyno #'s, but instead I messed up my LT1
IMO it's ultimately the installer's responsibility to check install height, clearances, etc. If you would have checked the install height you would have realized that you needed the 614-16 locks and NSA rockers on a bone stock head with stock valves with that cam. Yes they sold you a wrong part, but it's your fault that this happened. Sorry, it just bugs me when people start blaming others for their own mistakes. Like I said it's just my .02.
Re: wanted to post dyno #'s, but instead I messed up my LT1
Originally Posted by stroked383z28
IMO it's ultimately the installer's responsibility to check install height, clearances, etc. If you would have checked the install height you would have realized that you needed the 614-16 locks and NSA rockers on a bone stock head with stock valves with that cam. Yes they sold you a wrong part, but it's your fault that this happened. Sorry, it just bugs me when people start blaming others for their own mistakes. Like I said it's just my .02.
Re: wanted to post dyno #'s, but instead I messed up my LT1
Originally Posted by SStrokerAce
No the problem is who sold you the parts.... My math on your setup definately puts that into coil bind, which is what caused that.
Bret
Bret
What #'s did you use to figure that this was coil bind? I trust you over them.
Re: wanted to post dyno #'s, but instead I messed up my LT1
Well I guess they never put that setup on a motor and ran it. The proof is in the pictures in this post.... that's exactly what a setup that has gone into coil bind looks like.
The 614-16 is the PN you need for the locks on a stock valve setup. I just used the numbers from my experience putting those springs on stock heads.
Bret
The 614-16 is the PN you need for the locks on a stock valve setup. I just used the numbers from my experience putting those springs on stock heads.
Bret
Re: wanted to post dyno #'s, but instead I messed up my LT1
Originally Posted by SStrokerAce
Well I guess they never put that setup on a motor and ran it. The proof is in the pictures in this post.... that's exactly what a setup that has gone into coil bind looks like.
The 614-16 is the PN you need for the locks on a stock valve setup. I just used the numbers from my experience putting those springs on stock heads.
Bret
The 614-16 is the PN you need for the locks on a stock valve setup. I just used the numbers from my experience putting those springs on stock heads.
Bret
Let alone the parts that have gone out of here.
A couple of key things I noticed, the assumption of what is being said on our end.
Several, and I mean several, people call to order parts with part numbers.
God forbid we start talking them out of the parts they've already got in mind then we're not right according to the internet.
I guess the other problem would be my assumption that he had an NSA RR based on the lift he was talking about @ .568, but that info wasn't given.
Not once was Crane Golds brought up(let alone used with damage), if they were then I would've voiced my opinion on those based on what I've seen happen to those in the past.
Either way, somebody installing those should check them before going in for exactly what you said, a possibility of the numbers being off. But the attack on us before knowing all the facts would probably be useful before making your own assumption Mr. Bauer.
I respect your knowledge on motor issues, I've even searched for archived posts, the least you could do is possibly hear more details before a public thrashing.
Re: wanted to post dyno #'s, but instead I messed up my LT1
Originally Posted by CMSDave
I guess the other problem would be my assumption that he had an NSA RR based on the lift he was talking about @ .568, but that info wasn't given.
Not once was Crane Golds brought up(let alone used with damage), if they were then I would've voiced my opinion on those based on what I've seen happen to those in the past.
Not once was Crane Golds brought up(let alone used with damage), if they were then I would've voiced my opinion on those based on what I've seen happen to those in the past.
Anyway, the springs had an install height of 1.675". With .568 lift, that puts the spring at 1.107". These springs coil bind at 1.085". Thats .022" difference. Is that a little too close for comfort?
Id really like to know if this really was coil bind, or if a spring was defective. Either way I appreciate you working with me in trying to pinpoint the problem, and hopefully you will work with me in building the engine I will replace this one with.
Re: wanted to post dyno #'s, but instead I messed up my LT1
Originally Posted by Josh'95Z28conv
New pics!!
http://i1.tinypic.com/ncmlvp.jpg
http://i1.tinypic.com/ncmmav.jpg
http://i1.tinypic.com/ncmmiu.jpg
Looks like worst case scenario. The head is trash
It looks like the block may be ok, just needs a good bore. Hopefully .030 will take those grooves out from the piston pin. I found a part of the piston in the intake, the rest is in the pan I guess.
Damn that all happened really quick. It started making loud valvetrain noise, then died seconds later. Crazy.
Bret, those are the part #'s they sold me, along with the CC-4705-16 locaters. The guy at the shop that was going to dyno it said the locaters looked a little thick. If that caused coil bind, thats what went wrong. Should different springs been used? Id really like to know what happened. I looked over the other rr's, and they look fine. Im starting to think it was coil bind that went wrong...
http://i1.tinypic.com/ncmlvp.jpg
http://i1.tinypic.com/ncmmav.jpg
http://i1.tinypic.com/ncmmiu.jpg
Looks like worst case scenario. The head is trash
It looks like the block may be ok, just needs a good bore. Hopefully .030 will take those grooves out from the piston pin. I found a part of the piston in the intake, the rest is in the pan I guess. Damn that all happened really quick. It started making loud valvetrain noise, then died seconds later. Crazy.
Bret, those are the part #'s they sold me, along with the CC-4705-16 locaters. The guy at the shop that was going to dyno it said the locaters looked a little thick. If that caused coil bind, thats what went wrong. Should different springs been used? Id really like to know what happened. I looked over the other rr's, and they look fine. Im starting to think it was coil bind that went wrong...
Re: wanted to post dyno #'s, but instead I messed up my LT1
Was that .568 lift with a 1:5 rocker or a 1:6? Cause if it's 1:5 and then you put a 1:6 on, you'd be a lot more then .568 lift, in which case that might put you in coil bind. Just curious.
Ken R.
Ken R.
Re: wanted to post dyno #'s, but instead I messed up my LT1
Originally Posted by CMSDave
A couple of key things I noticed, the assumption of what is being said on our end.
Several, and I mean several, people call to order parts with part numbers.
God forbid we start talking them out of the parts they've already got in mind then we're not right according to the internet.
Several, and I mean several, people call to order parts with part numbers.
God forbid we start talking them out of the parts they've already got in mind then we're not right according to the internet.


