I'll try this again. Every time I try to add pictures, it deletes everything I've written!
I've had my new gm crate #12691671 installed for over a month now. I bought it from pace performance for $2910 with a $45 lift fee. Cheapest I found on the net. I looked into local shops here in Phoenix to do the job. But having a bunch of dusty cars with flats in your shop is not a good look! So I did it myself. With only the wife helping to remove and install the hood. I ended up spending about another $700 in parts and supplies along the way, which was expected. Install went great without any issues. The day after I finished I loaded up the truck and trailer with my quad. Headed 200 miles west for the Parker 250 off road race in Parker, AZ. My uncle was entered so I was doing his pitting. I know it's not recommended to put a load on it right away, but it's a chevy right! I did the autopsy on the old engine and it didn't seem bad at all. The cross hatching was still there, but it was slightly low on compression. All the exhaust valves were white except one. Which was prolly the one causing the smoking. I didn't notice any power increase or mileage increase, slightly lower mpg's actually. So the original just needed a freshening up I guess. It does seem to idle like it has a big cam with first start of the day. Revving it clears it up or it'll idle normal after a minute or so. Could be the egr as I replaced it with a known good one. Yes it's a negative back pressure like the original. Overall I'm pleased with it. Looking forward to another 250k miles. I'll add pics after this so I don't get deleted again.
I've had my new gm crate #12691671 installed for over a month now. I bought it from pace performance for $2910 with a $45 lift fee. Cheapest I found on the net. I looked into local shops here in Phoenix to do the job. But having a bunch of dusty cars with flats in your shop is not a good look! So I did it myself. With only the wife helping to remove and install the hood. I ended up spending about another $700 in parts and supplies along the way, which was expected. Install went great without any issues. The day after I finished I loaded up the truck and trailer with my quad. Headed 200 miles west for the Parker 250 off road race in Parker, AZ. My uncle was entered so I was doing his pitting. I know it's not recommended to put a load on it right away, but it's a chevy right! I did the autopsy on the old engine and it didn't seem bad at all. The cross hatching was still there, but it was slightly low on compression. All the exhaust valves were white except one. Which was prolly the one causing the smoking. I didn't notice any power increase or mileage increase, slightly lower mpg's actually. So the original just needed a freshening up I guess. It does seem to idle like it has a big cam with first start of the day. Revving it clears it up or it'll idle normal after a minute or so. Could be the egr as I replaced it with a known good one. Yes it's a negative back pressure like the original. Overall I'm pleased with it. Looking forward to another 250k miles. I'll add pics after this so I don't get deleted again.
