I’m Planning on using Belzona 1111 to repair these lower liner bores on a c15 I’m building . It appears there already was already a similar repair performed the last time this one was overhauled . Crazy thing is it was never mixing fluids
This engine has probably been overhauled 3 or 4 times .

I spent a good amount of time on the phone with a Belzona specialist today and they swear that it will work , I asked a few other guys that build a lot of cat engines and they told me it will work if I prep the surface properly and do a clean finish

What do we think? Can I get another run out of her?

This is not for a customer , this is an engine that runs in my fleet of 60 trucks .

Playing around with a 302 that’s currently efi from a 97 explorer and dropping it in a 91 ranger. Swapping to carb because I live under a rock. Looking for a cam that doesn’t kill driveability but still gives a good sound (unga bunga) what are we running?

TLDR: which cam chops and doesn’t suck to drive with?

Hello everyone,

General question for you all. I have a 68 firebird with an (assumed to be) original 350 in doing 224whp and 300wtq. Like all good pontiac owners I would like to put a 400 in it.

My question is this. Many people say the pontiac engines are expensive rebuild. A few have told me they're incredibly expensive to build.

Why? Is it just relative to a sbc 350?

Thank you.

Just got my cylinder heads back from the machine shop. They did a valve job, resurface, and installed new comp cams beehive springs for me. Checked valve recession and everything is within spec. Removed a couple springs to check install height and they’re shorter than what I asked for. They’re not all the same height. (Some installed at 1.766 and others at 1.833) But I specified that the install hight was 1.9” (148in/lbs). I’m very annoyed because I wrote down 1.9” for them and they called to confirm + get the spring pressure rating.

So before I call them and bring the heads back AGAIN… is it possible that the heights vary because all the springs are set to the correct pressure and that required various hight difference for each spring? Could they have measured pressure with the springs assembled on the heads?

I’m new to building modified engines so I want to make sure everything is done right and I don’t have any issues. I’d like this engine to be both powerful and reliable. I’m intentionally leaving out what the engine is because usually when I tell people that work at performance shops/machine shops they tell me they have no experience with that particular engine and disregard any questions I have. Please let me know if they did a bad job or I’m just a newbie and don’t know everything (which I definitely don’t).

What does this look like? First picture I’m assuming is from rings or something and second looks like pitting no? What could I do about this I’m trying to avoid a machine shop. It didn’t have any issues before tear down. 3rd is different cylinder with similarity that may be putting.

First time doing this so looking for some opinions.

My honda atv jumped timing and woudlnt run. I pulled the head to verify that the vavles didnt contact the piston and bend. Also wanted to check if they are seated properly.

Going to need a new timing chain for sure but i noticed where the cam shaft rides is pretty tore up.

Am i able to clean this up and put in new bearings or is this head shot? Also is the cam shaft good?