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To anyone doing a Gn transplant, buy the GN book by Peter Hoffman. This book covers all the wiring diagrams, sensor identification, part numbers and about anything you need to know about the 87 GNs. This book will save you alot of blood sweat and tears and if i remember it was only about $20. FYI

As far as the wiring is concerned all you need is the engine harness. schematics are available from many sources. but basically all you need to achieve is power to the harness (positive) and provide a good ground (very important). The chevette body harness won't change much. Lights, radio, will...

What ECM part number should i be looking for a '87 engine. There seems to be alot of different views on this subject. Mine got wet and fried.

Go to Rceng.com and do their sizing formula...it may help you.

Are the injectors low impedence?

Has anybody found a replacement grommet for the oil fill tube? I'd like to find one i could buy like yesterday...dorman/"help" brand @ autozone or Oreilly's got to have it but no one can seem to find listing. couple of stores online but don't want to wait a week to get it. Help!

Interesting little article on the last page of Popular Hot Rodding magazine feb "09 about putting manual into Buick 231...some part numbers also.

I also converted to manual and i'm using a flywheel from the likes of 231 buick/chevy monza. they were even fire. might be able to actually get in a junk yard.i'll be using a centerforce clutch 10.4 in size using the Monza as reference for your searches. one thing i did was to have the flywheel...

Thanks for the info

Do the fel-pro 1000 head gaskets require the heads be machined for receiver groove. Some catalogs mention that they should be machined some don't mention at all. What's the truth?

Had machine work done on my block. when checking bearing clearances (King bearings) the math showed i would have over .004 clearance. http://www.turbobuick.com/forums/images/smilies/mad.gifTried federal mogul bearings too and they worked out to be the same. looked for bore size for bare bore...

Thanks for cylinder notching info Thanks for your reply, now I no its has been done before!

eye browing block Thanks for the definition but i wanted to find out if anybody has seen fit to really do this to their block or has nobody noticed this feature.

Has anyone ever noticed that when head is mounted that the cylinder area around the intake valve presents an area that seems to be a area that would present a obstruction to intake flow. It may seem hard to discribe but if when you have your next motor apart without the pistons in mount one...

Wanting to know if These rods sold by C.A.T. are better quality than stock rods and how they compare to more expensive rods. Planning on about 450 to 500hp.prices are about $279, I was going to buy new rod bolts so why not spend a little more for all new rods if they're any good. Also, Any pros...

I'm trying to find the wiring diagrams for underhood showing all sensors,computer and the like. also i need to be able to read it..some diagrams i've downloaded are blurry and i need to be able to read color codes and routing thanks twin turbo Vega wagon on the way!

I want it! '75 vega station wagon with twin turbo Buick...starting engine build soon!

Thanks for the info....

sounds simply like a vacuum leak sounds like a vacuum leak the way you discribe your prob. probably when you had the valves covers off ( if you replaced the springs with the heads still on that is) if you had the heads off theres a number of things that may of went wrong, you might have a...

I have a intake manifold part # 25524316 what did this come off of, and is it better than the stock manifold off the '87 grand national motor?