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Old 09-02-2009, 04:00 PM
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Anyone have a GM Goodwrench 350?

Ive been looking at a couple of engine options for my 64 impala.
I found the GM Goodwrench 350 http://www.jegs.com/p/GM-Performance...52506/10002/-1
Anyone have any experience with this motor is it any good?

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Old 09-02-2009, 04:29 PM
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64 ss, - In addition to GM Goodwrench have you checked with Kragen to see what they have. A good friend bought a long block throught Kragen, here in San Diego, a few years back and has been overly pleased with his purchase. They offered several different builds (re horse power), depending on what you want. - Jim
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Old 09-02-2009, 04:31 PM
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your search link is broken now... my dad has the GM Goodwrench 260hp crate in his '72 C10.. bout 10k miles on it now.. decent, has a cam that's a bit small but a BN engine for $1799 Shipped, cant beat it.. 5/ 50k warranty cause it's installed in a Chevrolet 1972-1986
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Old 09-02-2009, 04:44 PM
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Gm

i had a goodwrench in my 87 blazer, new , i put a little hotter cam in it and it ran like a champ, as far as engine quality, yes, it was definitly built right with no surprises down the road
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Old 09-02-2009, 04:51 PM
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Heres that link again http://www.jegs.com/p/GM-Performance...52506/10002/-1

What cam would you recommend.
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Old 09-02-2009, 05:22 PM
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that's the engine that is in my dads C-10.. havn't changed the cam in it but... just somthing a little warmer than the stock cam.. can't go to hot with only 8.5:1 compression, but a little more lift wouldn't hurt
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Old 09-03-2009, 06:07 AM
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Stick with the GM crate. SOMEtimes, cheaper is more expensive...
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Old 09-03-2009, 06:33 AM
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Has anyone had any experiance with ATK-engines? http://high-performance-engines.com/...tegory_Code=GM
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Old 09-03-2009, 11:42 AM
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im not sure what your looking for exactly, if your going to fine with the 260hp they produce, and dont really care to get much more out of it that yes that motor will do fine, but if you want more performance out of it later on down the road then i would not suggest this motor at all, for one it is already slightly over camed for the heads, if i remember correctly the cam is an old corvete cam but the heads are stock low performance 76cc heads, the crompression ratio has been estimated at 8.5:1 but tests have shown it to be more around 7.9:1, these motors have been refered to as a left over parts on the shelf motor, the combo of parts just doesn't mix that well, the heads and compression wont support a stronger cam

in my personal opinion i would stay away from this motor, here is a link or a repitable engine builder with fair prices, and this is a much better canidate motor for a large vehttp://www.blueprintengines.com/popular_configurations/index.html?topic=specs&pc_id=93hicle such as the 64 impala
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Old 09-03-2009, 02:06 PM
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"if i remember correctly the cam is an old corvete cam"
Thats the 290 hp, the next step up fro GM. The 260hp has a little dinkey cam.
I have Jaspers version of this 350 , it too has been very reliable.
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Old 09-03-2009, 02:55 PM
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I too at one time bought a G.M. Target Master 350. IF I had to do it all over, and I only bought one due to "convienence", I would buy locally; despite the warrantee. The engine did not have many miles on it, but had been in the truck for several years, mostly sitting. It dropped #8 exhaust valve, and was past the warrantee. When I tore it down, the engine looked like it had 200K miles on it, the cylinder ridge was huge! I've heard the Target Master, "Hecho en Mexico" engines, are cast with very soft, cast iron. The ridge would seem to prove that. I still have the block, but have put off using it; sold the crank, rods, and new pistons I bought to rebuild it. I've become more of a believer in supporting my local economy. That's my stand, and I'm sticking to it.
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Old 09-03-2009, 03:07 PM
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I think I'm going with this 350 275hp. http://high-performance-engines.com/...duct_Code=VC01
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Old 09-03-2009, 03:11 PM
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Quote:
Originally Posted by junior stocker
I too at one time bought a G.M. Target Master 350. IF I had to do it all over, and I only bought one due to "convienence", I would buy locally; despite the warrantee. The engine did not have many miles on it, but had been in the truck for several years, mostly sitting. It dropped #8 exhaust valve, and was past the warrantee. When I tore it down, the engine looked like it had 200K miles on it, the cylinder ridge was huge! I've heard the Target Master, "Hecho en Mexico" engines, are cast with very soft, cast iron. The ridge would seem to prove that. I still have the block, but have put off using it; sold the crank, rods, and new pistons I bought to rebuild it. I've become more of a believer in supporting my local economy. That's my stand, and I'm sticking to it.
i also agree with this you should have a local machine shop that could help you and you could get exactly what you want, i still stick with what i said about this motor it is a combonation of parts that gm had sitting on the shelf and decieded to put them together for a budget 350, i have heard a lot more bad about these motors than good, i still wouldn't up-grade the cam in it, unless your going to upgrade the heads as well
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Old 09-03-2009, 04:28 PM
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have had bad luck with our goodwrench 350 we bought brand new from the dealer for the 82 k10

it burns oil and it leaks oil out all the lower seals including the RMS

plus they are crappy mexican ligt cfasting garbage

i dont know why he bought it for

dumb.

i always spend the $ and rebuild an original casting 350


way less money and many times better by far

just my experience

1300 or 1700 is freaking insane

stupid..

good luck
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Old 09-03-2009, 05:13 PM
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I currently have a gm goodwrench 350 crate motor. It has 8k miles on it an no problems other than the guy I bought it from put a offy tri-power set up on it and it's too much for the motor. While it hasn't given me any problems I have to agree with the other posts that you would need to be happy w/250 or so HP without doing a lot or work. I have it in a '32 ford and the nostalgic look w/no power is driving me crazy.
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