Build Thread: 376ci Iron Block
I've also started on another 4.060" bore LQ9 that will go in my Mustang. It won't be a stock stroke though.
The car is almost back together. The clamps that came with the new exhaust are garbage so I ordered new clamps from Summit. In the meantime I've been driving around my apartment complex with open headers and getting some heat cycles in the new springs and trying to break in the new clutch.
I've also started on another 4.060" bore LQ9 that will go in my Mustang. It won't be a stock stroke though.
I've also started on another 4.060" bore LQ9 that will go in my Mustang. It won't be a stock stroke though.
I had the P1637 in mine. I just had to let the car turn some RPM after the break -in. Weak battery gave me problems I think. Once it charged, it went away. I'm anxious to see what this thing does. I'm thinking about doing the same build with the set of LS3 heads that are currently on my stock bore 6.0
I had the P1637 in mine. I just had to let the car turn some RPM after the break -in. Weak battery gave me problems I think. Once it charged, it went away. I'm anxious to see what this thing does. I'm thinking about doing the same build with the set of LS3 heads that are currently on my stock bore 6.0
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Teching In
Joined: May 2011
Posts: 42
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Still living the low lyfe scraping on errythang?
Welp, looks like this is going to be the final update:
Driving home from a movie last week and a valve spring broke, dropping the valve into the engine. Looking down the guide, I can see the piston is still there so it's not a total catastrophe, but I've already decided to start on a new build for the car.
I've been communicating with Comp about the broken spring. I'm sure I'll wind up sending them in to be looked at, but I'm think it's going to be dual springs from here on out.
Driving home from a movie last week and a valve spring broke, dropping the valve into the engine. Looking down the guide, I can see the piston is still there so it's not a total catastrophe, but I've already decided to start on a new build for the car.
I've been communicating with Comp about the broken spring. I'm sure I'll wind up sending them in to be looked at, but I'm think it's going to be dual springs from here on out.
I really don't know what caused this, this is the first time a spring has broken on me so I'm really eager to find out why it happened. If it's something I did, I want know what it was so I can avoid doing it. If it's on Comp's end, I probably will stay away from Comp springs. I hope I can send it back to them to let them look at it and see what happened. If not, I might send it to a lab to get looked at and then I'll post results.
They're Comp 7228 conical springs. The cam was only about .598" lift and it was about .090" from coil bind. It's an old grind, I don't know what lobes, but the springs had a about 420lbs open. The spring broke just cruising on the highway at about 2000 RPM.
