So I just put in a new gm crate motor this weekend in my 99 tahoe. I was so excited when I got everything back together, being this was the first time I pulled a motor and put a new one in. And it started right up!
And then I noticed a day later that it was losing coolant and there was a drip from the transmission bell housing.
I cannot tell you how disappointing this is after spending about 8k between the new crate motor and all the new parts I added. I put in the felpro gaskets with new bolts w/ threadlocker...and I used the black rtv in the felpro kit for the chinawalls.
Since having the tahoe, I had a shop put in gaskets at 100k miles; then I replaced them again with felpros at 175k miles...and then I replaced the engine at 253k miles. I cannot tell you how many hundreds of dollars I spent on antifreeze for the first motor.
Now my new engine is already leaking coolant. The lower intake on the 5.7 is a P.O.S. I cannot believe someone has not made an intake that actually works and doesn't leak.
I am beyond pissed off.
So for those of you thinking about replacing your 5.7 with another.... If I had to do it again, i would of spent a few more dollars and got a brand new GM engine with completely new fuel injection system. Maybe an LS or one of the ramjets.
And then I noticed a day later that it was losing coolant and there was a drip from the transmission bell housing.
I cannot tell you how disappointing this is after spending about 8k between the new crate motor and all the new parts I added. I put in the felpro gaskets with new bolts w/ threadlocker...and I used the black rtv in the felpro kit for the chinawalls.
Since having the tahoe, I had a shop put in gaskets at 100k miles; then I replaced them again with felpros at 175k miles...and then I replaced the engine at 253k miles. I cannot tell you how many hundreds of dollars I spent on antifreeze for the first motor.
Now my new engine is already leaking coolant. The lower intake on the 5.7 is a P.O.S. I cannot believe someone has not made an intake that actually works and doesn't leak.
I am beyond pissed off.
So for those of you thinking about replacing your 5.7 with another.... If I had to do it again, i would of spent a few more dollars and got a brand new GM engine with completely new fuel injection system. Maybe an LS or one of the ramjets.