TargetMaster / Goodwrench 350 Crate Motor

Anyone got anything good or bad to say about these Heche en Mexico motors? I aqcuired one in a used long block fashion with a 84 700r4 trans.
Cast # is 10066038, Crank is a Nodular Cast Iron # 3932442, rods do appear to be powder metal forged, with dish cast pistons. Heads are also Heche en Mexico #33417369 and supposed to be similar to the 882 heads that are 76cc with 1.94 Intakes. I have heard both good and bad. Just wondering about anyone else's experiences with them before I put any funds into it. Intent is to be a budget basically stock engine for the 85 K10 with 700r4 and NP208.

From what I have heard hey are almost identical to a 350 of the same era. Should serve you well in your budget build up. What are your plans for an intake and exhaust?

Intake will probably be a Performer and a some 600cfm carb, Holley, Edelbrock or Quadrajunk depending on which I feel has a better of chance of being opreational with a kit in it. Maybe headers since I will have to start from scratch on the exhauast. Other info I have found says this crate motor is 260HP with stock I/E, but is 290hp and 325ft lbs torque with these mods. Good enough for an 80's non computer carbed engine.

Here is the info I found on 2 differant sites abou the engine. The only differance here is the block cast #. Mine ends in 8 instead of 6. Same heads and cam though. I can't see the block making a differance in these ratings.

12499529 G.M. Performance Parts 290 H.P. 350 Crate Engine $2070
8.0:1 compression ratio.


290 HP @5100 rpm


326 ft. lbs of torque @ 3750 rpm


( These Numbers obtained with a Holley 600 CFM Carb,1 3/4" headers , and an Edelbrock Performer intake part # 2101) (1 5/8" headers will work fine with this engine. the 1 3/4" headers listed above were dyno headers used for the test)
Block


-part # 10066034, casting # 10066036 2 piece rear main seal 4 bolt main
Camshaft- Part#3896962 Hydralic Flat tappet


Intake Lift-.450" Exhaust Lift-.460"

Intake Duration @ .050"- 222 Exhaust Duration @.050"- 222 Lobe Seperation-114
Cylinder Heads- part # 14034808 casting #33417369


1.94" Intake valve , 1.50" Exhaust Valve 76cc Combustion Chamber 7 Bolt style Exhaust Flange

Standard 85' and prior intake manifold bolt pattern. Perimeter bolt style Valve Covers.

This head is very similar to the old #882 castings from the 1970's
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What kind of vehicle are you planning on putting it in?

Just a stock 85 4x4 K10 Silverado Longbed. So far still stock as far as differentials with wussy 3.08 gears. The truck orignally had a NP208 and 700r4, so I have those acquired now. It was orignally a 6.2 Diesel vehicle but someone had converted it to 350 gas. So it sounds as if I am putting it back to the way someone else had it at one time. I bougth the whole rolling chassis, glass and interior for $200. All it needs is motor, trans, transfer case and front driveline. Everything else is there. So, its just a low budget project for now to get it running, then I'll upgrade the powertrain at another better financial time.

Sounds like a good combo for your truck. should give you plenty of power, without sucking down gas.