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Old 12-03-2010, 07:18 PM
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What do you think about this build 383

I have been calling around getting prices on 383 builds and have found some that sound ok but expensive. I was thinking about building the following.
$700pr. Heads http://www.jegs.com/i/Patriot-Perfor.../2151/10002/-1
$794 Rotating assy SCAT 383 (unbalanced)
$431.84 1.5 Rockers
$171.99 Cam #809-14097395
$????? Gasket kit
$????? Machine work
$????? Oil pump
____________________________________
Total is $2098 not including the ? items.

The Machine shop recommends a ton of stuff to prep the block but I want to know "what do you think is a must". I would like to do the minimal needed but do enough to keep it reliable. Does it really need to be square decked? My major question is will a block with 2 bolt mains be sturdy enough for such a build. I am looking to put something together that will make 300-350hp and a decent amount of torque. This is going into a Full size Chevy Express 1500 Conversion Van, Mainly used for family use and towing a boat. New heads seem to be cheaper than redoing my old ones.

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Old 12-03-2010, 08:10 PM
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You don't need a 383 if you're only shooting for 350hp. Those heads on a 350 with a good cam and 9.5:1 compression will put out more than 350hp.
I didn't have anything done to the block when i built my engine. If it is your block and you haven't abused it then i would suggest maybe just honing the cylinders a little and you should be good. I know some guys are going to say that you should get it checked for cracks and bored and all that stuff, but i don't see it a necessary if you know the engine has never overheated, never run without oil, and had the oil changed regularly.
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Old 12-03-2010, 08:41 PM
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Quote:
Originally Posted by chucksrt
I am looking to put something together that will make 300-350hp and a decent amount of torque. This is going into a Full size Chevy Express 1500 Conversion Van, Mainly used for family use and towing a boat.
No need for a 383, a 350 will fill the bill.
Start with a '96-'00 Gen I 350 short block out of a Chevy truck or van, the 5700 Vortec motor.
Bore it 0.030" and use Keith Black KB142-030 pistons. Cut the block decks to zero deck (even with the piston crowns). Use the stock 350 rods with ARP bolts installed and the big ends of the rods re-sized to round. Use the stock oil pan and a new, stock-type oil pump. Pay close attention to the piston to wall clearance and the top piston ring gap instructions from Keith Black.

This is a roller tappet cam block, so install this roller tappet hydraulic camshaft with the stock roller tappets....
http://www.summitracing.com/parts/CCA-08-408-8/

Install Racing Head Service cylinder heads with a 0.039", 0.040" or 0.041" head gasket....
http://www.summitracing.com/parts/RHS-12410-01/

and a Edelbrock RPM intake manifold....
http://www.summitracing.com/parts/EDL-7101/

mounting a remanufactured, manual choke Edelbrock 650 carb....
http://www.summitracing.com/parts/EDL-18059/

and long-tube, equal-length 1 5/8" headers of your choice. Using stock, cast iron exhaust manifolds will cost you 60 hp.

This makes a 9.1:1 355 that will run forever on pump gas and makes 380 hp @5000 and 435 ft/lbs of torque @3500.

Last edited by techinspector1; 12-03-2010 at 08:48 PM.
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Old 12-03-2010, 08:59 PM
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I need it to be compatible with the factory Fuel injection system. I have contacted PCMforless and he told me it will not be a problem reflashing my computer to work with whatever engine i decide on. I see that summit has a engine block bare for $650 http://www.summitracing.com/parts/SUM-150100/ . That is less than a machine shop wants to charge me to modify my own block! Are 2 bolt mains strong enough for a long life of moderate hauling with the occasional romping! I plan on getting 100k out of it at least!!!

The #'s you quoted would be awesome!!! I would love to just do the minimum to the block and use what I have. If machine work gets too pricey then i'd just be better off getting the engine listed above!


Quote:
Originally Posted by techinspector1
No need for a 383, a 350 will fill the bill.
Start with a '96-'00 Gen I 350 short block out of a Chevy truck or van, the 5700 Vortec motor.
Bore it 0.030" and use Keith Black KB142-030 pistons. Cut the block decks to zero deck (even with the piston crowns). Use the stock 350 rods with ARP bolts installed and the big ends of the rods re-sized to round. Use the stock oil pan and a new, stock-type oil pump. Pay close attention to the piston to wall clearance and the top piston ring gap instructions from Keith Black.

This is a roller tappet cam block, so install this roller tappet hydraulic camshaft with the stock roller tappets....
http://www.summitracing.com/parts/CCA-08-408-8/

Install Racing Head Service cylinder heads with a 0.039", 0.040" or 0.041" head gasket....
http://www.summitracing.com/parts/RHS-12410-01/

and a Edelbrock RPM intake manifold....
http://www.summitracing.com/parts/EDL-7101/

mounting a remanufactured, manual choke Edelbrock 650 carb....
http://www.summitracing.com/parts/EDL-18059/

and long-tube, equal-length 1 5/8" headers of your choice. Using stock, cast iron exhaust manifolds will cost you 60 hp.

This makes a 9.1:1 355 that will run forever on pump gas and makes 380 hp @5000 and 435 ft/lbs of torque @3500.

Last edited by chucksrt; 12-03-2010 at 09:06 PM.
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Old 12-03-2010, 09:07 PM
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A 2 bolt will be fine.
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