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i was wondering if i can put a 2000+ 4.6 northstar in a 197 deville. done some research and ive read that 1996-1999 4.6 are some of the worst engines and to replace it with a 2000+. anybody havve any input

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Yeah, I have some input...

Check the Purge line as BodybyFischer suggested....

One step at a time. Don't leap to conclusions.

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Yeah, I have some input...

Check the Purge line as BodybyFischer suggested....

One step at a time. Don't leap to conclusions.

Right on, Patrick, good advice!

And NO a 2000 engine will NOT fit, the accessory bolts are very different, the way the crank sensors work is different and the 2000 has COP.

Properly diagnose YOUR engine and stop jumping to conclusions because of what you 'heard'. You have classic purge line problems, as you had a bad hose and then it overheated when you refilled it.

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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and anyway, 2000s have their own set of problems. So maybe the headgaskets go bad in the late 90s. Once they are fixed they are good to go. If the guys are suggesting you want to replace your engine because of a small problem then listen to them and let them help you fix your problem. You dont buy a new house with the heater goes out.

* 1966 Deville Convertible

* 2007 Escalade ESV Black on Black

* 1996 Fleetwood Brougham Black on Black V4P -Gone
* 1983 Coupe Deville Street/Show Lowrider -Gone

* 1970 Calais 4dr Hardtop GONE
* 2000 Deville DTS - Silver with Black Leather and SE grille GONE
* 1999 Seville STS - Pearl Red GONE

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