Crate rebuild update....unreal!!

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Crate rebuild update....unreal!!

Postby Sunula66 » Mon Apr 07, 2014 11:45 pm

So to add to my earlier post about the poor quality G.M. crate motor...
Marty filled me in today as to the likelilhood of what took place with my engine and it's exactly as he suspected! :(
Remember when he told me how the assembly line guys don't properly check stuff? He told me today when I called to see if I could go to the engine shop to ceramic spray paint my headers while the engine is being rebuilt, he measured my block and found that the deck height wasn't machined enough and was the reason for a sluggish performance and he announced that as well, the cylinder bore was too large by 2 thou.!! and reasons why the rings couldn't seat properly! He said that the crate was likely at 7:7 compression from new and probably around 265 or less horse power a far cry from a 330hp motor as it was intended ...330hp with 9:5-1 was what it was supposed to be...NOT! :evil: nice, I couldn't win to begin with thanx G.M. assembly line guys! maybe they should have their 42.50 an hour pay cut in half!!!!......

:th: The silver lining to all of this is as good news was passed on which made my day...the estimate will be much less as they are able to use my crankshaft and due to my steadfast habit of many low mile oil change intervals and the constant use of ZINC additive to the oil, I saved the crank...the cam can also be reused but they suggested that for 125nbucks, why not throw in a new one of those as precautionary and I agreed. It was also mentioned that he was very impressed with the excellent quality of the new cast block with a "36" in the serial number which was foreign to him and he said this twice as it was a really nice fresh new engine casting and too bad they didn't put it together right with the proper components....
The "new" engine will be re-assembled tomorrow and will deliver great fuel mileage as well as great performance and a nice highway cruiser quote from Marty @ Pro-Max.."lotsa jam"......I can't wait! ... :dance: I'll keep you updated..evidently,
.......www.promaxperformance.com....Edmonton Alberta, Canada...10 years building performance and custom built engines, C.N.C. machining at it finest!!! Thanks to Marty and Gene!!!
"remember... not everything is good on TOAST!"
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Re: Crate rebuild update....unreal!!

Postby zeke » Thu Apr 10, 2014 6:57 pm

That's great man! So what is the original supplier doing to compensate you?
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Re: Crate rebuild update....unreal!!

Postby Kev442 » Fri Apr 11, 2014 3:09 pm

Maybe it's an old wives tale, but I was told that fresh unseasoned blocks were always bored a little loose as the block would move around a bit as it "seasoned". I thought a "seasoned" block was always preferred for a build to tight tolerances. Then again, high nickel content blocks pretty much turned out to be bs based on casting numbers.
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Re: Crate rebuild update....unreal!!

Postby Sunula66 » Fri Apr 11, 2014 5:49 pm

Zeke how's it hangin lol
probably not gonna happen but I intend to provide G M with the printout of the before and after tolerance measurements to see what they offer. Hell, they might give me a couple of free jugs of windshield bugger off wash and a kick in the privates, don't really expect much at all!
"remember... not everything is good on TOAST!"
3 Birds of a Feather...
#1 the Silver '80 W-66 code Formula purchased 9 years ago
#2 red "80 W-66 code Formula purchased Mar./16
#3 black '78-9 coupe with spoiler kit and 4spd 305...parted out to a Terrific H-Buddy
2015 Cruze Turbo Diesel/ Just replaced by the 2016 Sonic
'98 GMC 1/2 ton with corporate 3/4 ton driveline still makin' it all possible
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Re: Crate rebuild update....unreal!!

Postby Sunula66 » Fri Apr 11, 2014 5:57 pm

Hi Kev!
I hears 'ya but wouldn't that kinda be false advertising lol
I mean that this motor could've never achieved the output that was advertised and intended. As for the higher nickel content in the later casting, cannot confirm or deny. I called G M and after 25 mins of total bs I hung up. It would appear that their products specialists are unaware of any enhancements to any products to make them last longer..... WTF. Holy F --k! Talk about hiring the right people to screw callers around on purpose!!
"remember... not everything is good on TOAST!"
3 Birds of a Feather...
#1 the Silver '80 W-66 code Formula purchased 9 years ago
#2 red "80 W-66 code Formula purchased Mar./16
#3 black '78-9 coupe with spoiler kit and 4spd 305...parted out to a Terrific H-Buddy
2015 Cruze Turbo Diesel/ Just replaced by the 2016 Sonic
'98 GMC 1/2 ton with corporate 3/4 ton driveline still makin' it all possible
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Sunula66
 
Posts: 956
Joined: Sun Mar 01, 2009 8:00 pm
Location: Ontario, Alberta, Canada

1980 Pontiac Sunbird Formula

Re: Crate rebuild update....unreal!!

Postby Kev442 » Sun Apr 13, 2014 5:02 pm

By the way, I'm not defending the GM crate, you got raped on the deck clearance or piston height or whatever they did wrong to end up with such low compression.
I knew a guy who had his 351 rebuilt to make some power, they built it tight and right. He wore out two starters and it took 6,000 miles before the rings were happy in their bores when installed that tight. Fuel economy was horrible too. GM is never going to build a motor that tight.
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Re: Crate rebuild update....unreal!!

Postby Sunula66 » Wed Apr 16, 2014 12:16 pm

:th: Update...
Engine in and being hooked up!! just got news and will be hearing this week when to come on down (3 hours away)...
Hafta find a way to post pics of car with new "mill" @ Promax B-4 leaving ...Can't wait, will keep you updated, thanks, Ron. :D
"remember... not everything is good on TOAST!"
3 Birds of a Feather...
#1 the Silver '80 W-66 code Formula purchased 9 years ago
#2 red "80 W-66 code Formula purchased Mar./16
#3 black '78-9 coupe with spoiler kit and 4spd 305...parted out to a Terrific H-Buddy
2015 Cruze Turbo Diesel/ Just replaced by the 2016 Sonic
'98 GMC 1/2 ton with corporate 3/4 ton driveline still makin' it all possible
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Posts: 956
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