block???

chadjett

New member
im wanting to build an enine on the side for the sy this winter or spring, what the best block or what blocks work?
year and what it would come out of if i got it at junk yard
thanks
 

100in6

100in6
the stock blocks and cranks will work well if you don't expect more than reasonable power from it. if you want big power re-read the last post about the bowtie, and call mike lee. i think he has some already machined ones that are used.

you can have a lot of fun with a stock motor. and make it fast and reliabable too. :D

you want 800 horsepower, thats another story :wink:
 

GM TURBO

Sell Out
Since the topics came up - what is the difference with a Bowtie block?

Is there a part number to order direct from GM - just so I can get an idea of course. I have a few GM connections.
 

GM TURBO

Sell Out
:eek:

Good Lawd that's a lot of money.

I couldn't find a price on the aluminum bowtie - but I can only imagine.
 

THEMADTYPH00N

Active member
For that kinda money, I'll stick with my stock block. BTW is there a part number or something where you can buy a brand new stock block.
 

jwaller

Evil Genius/SyTy Guru
GM TURBO said:
:eek:

Good Lawd that's a lot of money.

I couldn't find a price on the aluminum bowtie - but I can only imagine.

price what price? oh well. I love mine. u will never pry it out of my cold dead hands. unless you have a pile o cash to swap for it.
 

100in6

100in6
unless you are looking for a race engine, forget the new block and get yourself a good seasoned one. seasoned blocks are great over new ones sometimes.

if i had it to do over i think after everything was machined i would have every piece in the assemble cryoed. anyone know how much it costs to freeze all the pieces? theres a new technique that's supposed to be even better than cryoing. some type of impregnation process. i had a brochure on it and lost it but i'll get another one and post it.

john, did you spring for the new aluminum one??????????????? don't know whether to say "you da man" or "are you nuts" or "must be nice to be that rich" or what... i don't think i would ever let a nitrous bottle even close to my toy if you went with the aluminum. dang... i'm jealous. wish i could afford stuff like that :(

les
 
THEMADTYPH00N said:
For that kinda money, I'll stick with my stock block. BTW is there a part number or something where you can buy a brand new stock block.

Looks to be part # 10205294

GMPartsDirect.com said:
GM PART # 10205294
CATEGORY: All
PACK QTY: 1 CORE CHARGE: $0.00
GM LIST: $855.00
OUR PRICE: $598.50
DESCRIPTION: BLOCK

10205294 Engine Block
This cast iron bare block is used in production 4.3-liter V6/90º engines. It has 4.00" cylinder bores and two-bolt main bearing caps. The lifter valley is machined for roller or flat tappets, and the rear main bearing uses a one-piece seal. This block has fuel pump boss.
Technical Notes: This block has the same cylinder wall thickness as current production engines. It has two oil galleries and an open lifter valley; it cannot be converted to V8-style lubrication. Heavy-duty and pre-1986 production crankshafts designed for two-piece rear seals can be installed in this block with crankshaft seal adapter P/N 10051118.
 

jwaller

Evil Genius/SyTy Guru
100in6 said:
john, did you spring for the new aluminum one??????????????? don't know whether to say "you da man" or "are you nuts" or "must be nice to be that rich" or what... i don't think i would ever let a nitrous bottle even close to my toy if you went with the aluminum. dang... i'm jealous. wish i could afford stuff like that :(

les

I got a new alum block old part# (but lighter than any of the new ones)from mike lee, so it wasn't that bad. and no I won't be using nitrous on this motor, just on the IC.
 

chadjett

New member
thanks for the replies!! so is the stock block good for 550-650 hp??
i'm a little confused? are you saying go to gm dealer and get new stock block or a parts place? nothing injunkyard is good? or is that what mean by seasoned? sorry don'tmean to sound dumb thanks
 

jwaller

Evil Genius/SyTy Guru
if you want to use a stock block find a used one. just make sure to reuse your stock syty main caps or install steel billete ones.
 

100in6

100in6
seasoned means to get an already used motor. the metal has been seasoned by using it. there is nothing at all wrong with going with a used motor, AS LONG AS YOU GET A GOOD ONE AND HAVE IT CHECKED AND MACHINED. go to a respectabel, if there is such a thing junkyard, and try to avoid motor that look like they have had overheating problems around the heads or no oil or other engine problems. something that came out of a vehicle that is totally body damage and doesn't have a million miles is something to look at. that way you get the crank, and maybe even some vortec heads and other stuff, depending on what the boneyard guy is like. i like to think that not everyone today is a crook. it seems to be gettin harder everyday to think like that though. i guess it depends where you live. before you buy anything shop around and get some prices and tell them what you want it for. then post for us to see and we'll help you to decide. about gettin one from mike lee, he's in california, the freight might not bee to bad for truck shipping, you wouldn't be gettin a piece of junk from mike, he's honest and known to all of us, the motor will have allready been checked out, he's honest and known to us, he know about these motors and is more of an authority than a juy who crushes cars for a living, he's honest and is known to us...

do you get what i'm saying...
 

Tooky

Serious about performance
Chad I would check the VIN of the vehicle it came out of to make sure its a "Z" code vehicle with the LB4 block. You don't want the W block or L35 block or any other crap, the LB4 block works so I'd stick with that. I scored one longblock with 200,000 miles outta an 89 Blazer for free!! Hopefully you luck out too,
 
100in6 said:
if i had it to do over i think after everything was machined i would have every piece in the assemble cryoed. anyone know how much it costs to freeze all the pieces? theres a new technique that's supposed to be even better than cryoing. some type of impregnation process. i had a brochure on it and lost it but i'll get another one and post it.


I found a place in Mass. Thats will do the entire engine for 850 plus freight, and the guy has some nice coatings and such too. Heres a link to there site and there is also a complete price list.

http://www.hekimianracing.com


And as far as an advantage of the bowtie block is a bigger bore, the bowtie block can go from a stock 4" all the way to 4.125 or some of them as big as 4.155, the one i have is bored to 4.130 so with the stock stroke crank will be a 280 cube, not bad for just a bigger bore...IMO

Hope this info helps.
 

ed hess

race or get outta the way
I wouldnt touch one of those aluminum bowties.

from what i heard you need to use motor mount plates front and rear if your making a lot of power with aluminum. otherwise you can literally pull the mount studs out of the block or worse yet the mount area flexes which distorts everything....you go out and start making some power on it....next thing you know you are driving home and the motor comes apart. bummer huh!

ed
 

4C FED

Absolutum Dominium
HotRodV6 said:
I And as far as an advantage of the bowtie block is a bigger bore, the bowtie block can go from a stock 4" all the way to 4.125 or some of them as big as 4.155, the one i have is bored to 4.130 so with the stock stroke crank will be a 280 cube, not bad for just a bigger bore...IMO

Hope this info helps.

Improved oiling also.
 
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