This is topic 331 m&r shortblock any good in forum Tech Talk at Northern California Ford Owners  .


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Posted by marvinshields (Member # 7764) on :
 
i was thinking of buying this 331 shortblock off ebay for 1,500 can any one tell me if this block is any good are no any where i can get a 331 for that price or cheaper the blco is from m&r
 

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Posted by marvinshields (Member # 7764) on :
 
here is the shortblock http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&ih=006&sspagename=STRK%3AMEWA%3AIT&viewitem=&item=160148110303&rd=1
 

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Posted by turbo50 (Member # 6700) on :
 
Do you have a link?

$1500 seems suspiciously cheap for a quality 331 shortblock.
 

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Posted by asskickn88 (Member # 4957) on :
 
On paper it looks decent but you never know. Its also balanced to 28oz so you'll have to get a new balancer and flywheel if your going to run it in anything newer than an 81 car.
 

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Posted by street_illegal_stang (Member # 1554) on :
 
if you going with M&R please keep us posted if the engine runs healty. I've ask them some months ago if they offer any other pistons,and they told me they have probe blower pistons for $1650. nice but who knows if these guys
have good assemblers or crapy machining/cut corners ya know?
 

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Posted by 88DroptopGT (Member # 2535) on :
 
I always go by the saying "You get what you pay for"
 

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Posted by turbo50 (Member # 6700) on :
 
not bad...balanced, forged slugs etc etc.

What is the core cost and shipping on that? They can kill your "deal" there.
 

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Posted by jmcclesk (Member # 1355) on :
 
shipping to sacramento terminal is 150.00

[ August 21, 2007, 02:17 AM: Message edited by: jmcclesk ]
 

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Posted by marvinshields (Member # 7764) on :
 
its all goin to cost me about 1700 with shipping
 

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Posted by hidnn.o.s. (Member # 1219) on :
 

quote:

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Originally posted by 88DroptopGT:
I always go by the saying "You get what you pay for"

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VERY VERY TRUE
 

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Posted by turbo50 (Member # 6700) on :
 

quote:

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Originally posted by marvinshields:
its all goin to cost me about 1700 with shipping

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quote:

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Originally posted by 93PONY:
Retail on the Crankshaft is $217
Retail on the rods: $225
Retail on similar pistons: Under $300
Rings & bearings: $175 or less

That's $917 retail & I know of kits with 2618 forged pistons that retail for $899. Any way you slice it you're looking at around $900 RETAIL for the rotating assembly.
Figure any good machine shop will have much better pricing (at least 20% less) & you're looking at cost of around $700. Add a block & machine work & yes it's very possible that a machine shop can do all the operations listed, balance, & assemble the shortblock & still make a decent profit while keeping the machining/assembly quality high.....even if the parts themselves are 'economy'.

From my experience a cast-steel stroker crankshaft & 'SIR' style rods will hold more power than the stock block can handle. The pistons would not be my choice considering the dirt-cheap pricing of Probe's 2618 forgings, but hey...I'm sure they'll still much stronger than the stock 302 slugs which have been known to handle well over 500hp.

Honestly, it's a damn good price. I know I wouldn't buy one....but I'm an engine builder & if I'm gonna do it, I'm gonna spend a little more $$$ & do it right. However, I see no reason why this motor can not handle 450+HP if the machining/assembly was done correctly. In the end the rotating assembly can handle more Power than the block.

Personally I'd go for a 347. Same price as a 331 & you can't go wrong with more cubes IMO.

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