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Subject: GM Goodwrench 350 (target) motor

Original Message
Name: Steve
Date: May 28, 1998 at 16:41:34
Subject: GM Goodwrench 350 (target) motor
Comment:
Can anyone offer advice or warnings about using this engine as the base for building a reliable street engine that will have minor perf mods (cam, heads, headers, balancing)? I haven't been able to locate any info online. Even the GM Performance Parts catalog only mentions the "Special Performance" 350.

Any info about this engine would be appreciated. Thanks in advance


Response Number 1
Name: Jeff SoCal
Date: May 28, 1998 at 20:31:00
Subject: GM Goodwrench 350 (target) motor
Reply:
I used a new target motor in a '68 Camaro. I changed the cam to an Isky 270 HYD and added a Milodon timing gear set. With a Performer mani and 600 Holley, Hooker headers and a full exhaust system, TH350, 14 inch radials and a 3.08 one legger the car would run high 13's all day. I would not waste the time to tear it down for a balance job. It's all cheap parts, but reliable.

Response Number 2
Name: Bruce Allison
Date: May 28, 1998 at 22:32:36
Subject: GM Goodwrench 350 (target) motor
Reply:
I've had the same experiance as JeffSoCal with these motors.

Response Number 3
Name: tom
Date: May 29, 1998 at 05:59:28
Subject: GM Goodwrench 350 (target) motor
Reply:
Steve; Check out the July issue of Sport Truck. They took a standard target engine, put it on the dyno and then installed a Holley System Max with a couple varations with dyno tests as they went along. Interesting. Tom

Response Number 4
Name: Schurkey
Date: May 29, 1998 at 15:08:06
Subject: GM Goodwrench 350 (target) motor
Reply:
Talk to an automotive machinist before you buy one of those engines. Low grade cast iron, made in Mexico. As long as you consider them disposable engines, they're fine and cheap.

Response Number 5
Name: Bill
Date: May 30, 1998 at 19:34:01
Subject: GM Goodwrench 350 (target) motor
Reply:
Very good engines. The only consideration for mild hop ups is to change cams. The stock cam design is prone to vavle float before 5000 rpms. It is not the springs. It is the cam profile. The heads are a good heavy casting and it has 4 bolt main caps. Being made in Mexico doesn't make them poor engines, it makes them cheap engines. Besides they have a good warrantee. I've been driving one for two years in my 79 Blazer without a problem. They'll make 300 hp with a cam, intake and header combo easy.
Go for it!
Bill

Response Number 6
Name: James Pekarek
Date: May 31, 1998 at 13:40:45
Subject: GM Goodwrench 350 (target) motor
Reply:
The GM 350 is a good, stout motor. Although right out of the box it is not quite a "screamer", but they are a good, reliable platform. As for "low grade" Mexican cast iron? What in the world is that? The blocks are just as good as anything on the market for the street.

Response Number 7
Name: MikeR
Date: May 31, 1998 at 16:00:29
Subject: GM Goodwrench 350 (target) motor
Reply:
The Target Master 350 has 4 bolt main bearing caps.

Response Number 8
Name: Nick
Date: June 04, 1998 at 12:01:18
Subject: GM Goodwrench 350 (target) motor
Reply:
I may be wrong here, but I thought I saw somewhere that the Goodwrench 350 are no longer the Target Master motors made in Mexico. Anyway, my experience shows it to be a decent motor--a few years ago we stuck one in an '80 Blazer (with headers and an RV cam, otherwise stock)--we never had a problem with it in about 2 1/2 years of driving it until we sold the truck. I'd definitely say its a pretty decent engine.

--Nick


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