Ive been thinking about buying an assembled short block. Here are the 2 different ones ive been thinking about.

L31 vortec 350 $1199.95
4 bolt 350 1 piece seal
5.700 p/m rods
3.480 cast nodular crank
4VR dish cast pistons (-13cc)

zz4 350 $1895
same block
same rods
forged 1053 steel crank
Hypereutictic 4VR flat top (-6cc)

They also charge 500 bucks on top of this price to blueprint the short blocks do you think I should go ahead and do this?

I plain to eather put a set of vortecs or fastburns on top of this engine.It must be able to pass emissions. Also this will be a TPI setup ontop. With all this in mind what cam should I go with?

Last thing is how long can one of these engines sit before I stick it in my car?

Any thoughs or sugestions are welcome thanks

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91 RS Camaro 5-speed black w/t-tops 305 TBI now TPI
MODS: SLP cold air intake w/K&N, air foil,Accel 19 LB injectors, March aluminum under drive pullies, Alburn pro posi, Aluminum drive shaft, Random Technology 3'' cat-back, 8.5mm MSD wires, 160 thermo, jet fan swich, Custom chip with 91 vette computer, SSBC slotted rotors, optima battery in the rear, BMR adjustable lower control arms and panhard rod, Kenny Brown strut tower brace, TB bypass, no egr, no air

 

i would go with any of the ZZ"x" style 350's. u said u want to add some vortec or fastburn heads. well if u buy the vortec 350.. y r u going to add vortec heads to it when it already has it. plus i beleive GMperformance parts has a "fast burn" 350 *or 355, not sure* but its basically the zz4 engien with fastburn heads on it. s far as balance and blueprinted.. i would.

EDIT: as far as sitting.. last i checked, they come in a crate with 1 qt of oil in the oil filter.. so id think it would be find for a few months.

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1986 IROC-Z
406 SBC TPI
399.6 rwhp 436.1 rwtq
*damn injectors running lean*

[This message has been edited by aziroc (edited July 06, 2002).]

 

GM has the fast burn 385. zz4, a 330 hp 350, a 280 hp 350, ls1 and i think that's that for small blocks.

as far as picking one of the two you mentioned, i'd go with the ZZ4. i've heard many people say they love that motor.

[This message has been edited by LS1_03 (edited July 06, 2002).]

 

I would go with the zz4, edlebrock e-tech heads, and a GM performance parts HOT cam. This would allow your' car to have the idle of a street car but when you get on it, it will be fast as hell!

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91 Camaro RS with a T56, 3:73 rear, subframe connectors, 3" flowmasters, underdrive pullies, urathane bushings, torque arm

 

Also if that is the stock T-5 transmision I would either have it rebuilt or buy an all new tranny because those factory 5 speeds have low torque ratings and with the torque that the 350 would put out it would rip that tranny apart.

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91 Camaro RS with a T56, 3:73 rear, subframe connectors, 3" flowmasters, underdrive pullies, urathane bushings, torque arm

 

Unless you are adding a big power adder, a cheap shortblock is a cheap shortblock. Good machine work is really the only thing that is a concern. I'd do the L31. Grab a set of E-Tec 200 heads, a 230/236 duration/.550" lift cam from Comp Cams, a decent intake and cab, a set of headers, and it should actually scream.

Goodluck man!!


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Denny Villemure
1989 Camaro IROC-Z Convertible, 305 TPI, 2.73 Gear, Flowmaster 2 chamber. 15.60 on motor, 14.20 on a 75 shot from NX. Woo hoo!
www.denny.cz28.com

[This message has been edited by AutoRoc (edited July 06, 2002).]

 

I'd stay away from the L31 Vortec engine. Those -13cc pistons are killer on the compression ratio. I am currently running that engine, and when I put my Trick Flow 67cc heads on, I had to run a .028" head gasket, just to get a 9.2:1 compression ratio.

Other than the pistons and crank, they are about the same engine...

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Webmaster:SETHIRDGEN
GM Tech
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