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Engine Swap Everything about swapping an engine into your Third Gen.....be it V6, V8, LTX/LSX, crate engine, etc. Pictures, questions, answers, and work logs.

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Old 01-17-2007, 07:31 PM   #1
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Targetmaster 350 info

I got a targetmaster 350 in my 86 iroc but i dont know much about it. I heard that with a header,intake,decent carb combo the motor has about 250hp. Does anyone know if this is accurate? i thought i would have more...
if you have some good info on the targetmaster motor please post
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Old 01-18-2007, 02:00 PM   #2
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Targetmaster was the old Chevy name for replacement engines. Typically made in Mexico. Typically pretty bland parts. 250 HP would be with good intake, carb, and exhaust, not running accessories (like water pump) at the flywheel. And probably generous.

The current name being used by GM is Goodwrench. Quality is slightly better than under the Targetmaster program.
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Old 01-18-2007, 03:38 PM   #3
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The Targetmaster product line was marketed as the cheeepest possible GM-warrantied engine replacement for a revenue-producing vehicle. Think of a phone company van; imagine how the phone company would want their old dead van back on the road rather than paying for a new one.

The actual motor itself was usually a failed unit from final test (run-in) off the production line at the engine plant, "repaired". I've seen some of the MOST AMAZING things in those; from ONE crank journal undersized, to ALL crank journals oversize with no oil clearance, to core shift in the block that rendered it useless, and so on.

Part number for part number, they typically matched the lowest performance engines of the day. Most of them were truck motors. Again, remember, think "fleet service unit". Phone company van. Typically they were the 8:1 dished pistons; 76cc heads either 882, 624, or 993 casting; 442 casting crank; sometimes "O" or "B" rods, since they were usually a truck motor; 929 cam http://store.summitracing.com/partde...2D12%2D105%2D3 ; often 4-bolt mains (again, truck stuff). In no manner way shape or form a powerhouse; just, enough power to get a failed revenue-producing member of a large fleet customer's fleet back on the road and producing revenue, at the lowest possible cost to the customer.

250 HP or so on an engine dyno, MAYBE. The IDENTICAL motor, part # for part #, was "rated" at 165 HP in an Impala or C10 or G10 350 2-barrel. So I don't know where you'd get the idea that an intake or carb would coax more than 250 HP out of it.

I don't have any "good" info. Info is what it is, neither good nor bad. Sorry, I can't help you with that part.
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Roughly paraphrased into modern English, and applied to figuring out what's wrong with your car:

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Old 01-18-2007, 05:25 PM   #4
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Quote:
Originally Posted by sofakingdom View Post
LMAO, someone would actually pay $105.00 for a stock cam when you can buy the cheapy summit K-series cam/lifter kits for less.

I would go with an engine that atleast has a decent cam and some compression.

Last edited by Fast355; 01-18-2007 at 05:31 PM.
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Old 01-18-2007, 06:00 PM   #5
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Quote:
LMAO, someone would actually pay


It's like I posted a link to the 151 cam the other day... got about the same repsonse.... another stupendously crappy cam.

As I said there, this stuff is so good, there's no way I could possibly make up anything near as hilarious. And the funny thing about that 929 is, people will actually pay good money for it because somebody told them it's the factory cam for a 74 Vette or something, it's GOTTA be good.
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Old 01-19-2007, 09:13 PM   #6
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Quote:
Originally Posted by sofakingdom View Post


It's like I posted a link to the 151 cam the other day... got about the same repsonse.... another stupendously crappy cam.

As I said there, this stuff is so good, there's no way I could possibly make up anything near as hilarious. And the funny thing about that 929 is, people will actually pay good money for it because somebody told them it's the factory cam for a 74 Vette or something, it's GOTTA be good.
About the only decent cam in that time was the one used in the Hydraulic cammed Z28s, the L46 and the L-82. Still lame by todays standards, but better than the other two offerings.

I tell customers all the time to buy the 260 HP 350 and put a MTC1/CS1014R/K1102, etc cam in it rather than buying the 290 HP 350. The 260 HP crate 350 with a "RV" cam in it will make about 285 HP and about 360 TQ. Installed in a vehicle stock equipment it is a 200 RWHP engine, that is still better than the 170-180 RWHP of the 260 HP goodwrench.
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Old 04-27-2007, 07:42 PM   #7
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Re: Targetmaster 350 info

so now that i got this "truck motor" out of my car, I'm looking to increase its performance a little without breaking the bank. does anyone have have some suggestions on head/cam combos that work well with this type of motor? I've researched holley and edelbrock kits but alot of the stuff i dont need.
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Old 04-27-2007, 08:23 PM   #8
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Re: Targetmaster 350 info

305 heads (416, 601, or 081 castings; NOT 187) with 1.94" intake valves, chambers unshrouded, and bowls blended

Comp XE262 cam
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Numquam ponenda est pluralitas sine necessitate.
William of Ockham, c. 1330 AD, from Quaestiones et decisiones in quattuor libros Sententiarum Petri Lombardi

Roughly paraphrased into modern English, and applied to figuring out what's wrong with your car:

The simplest explanation that fits all the facts is probably the right one.
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Old 04-27-2007, 08:23 PM
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