New block
Thread Starter
Senior Member
Joined: Apr 2002
Posts: 901
Likes: 1
From: Pembroke Pines, FL
Car: 89 Firebird
Engine: 305
Transmission: T5
New block
I'm trying to find a block to start my build-up on, I'm looking for a 400 with 4 bolt splayed, and a 4.125 bore.
I've been thinking about going with the Motown Race Block from World Products, this is the site for it..
http://www.worldcastings.com/newstuff4.shtml
Whats your thinking about this block, do you know of a better one?
forgot to add, block is going to be for a 427 "hopfully" pulling 500+ hp
I've been thinking about going with the Motown Race Block from World Products, this is the site for it..
http://www.worldcastings.com/newstuff4.shtml
Whats your thinking about this block, do you know of a better one?

forgot to add, block is going to be for a 427 "hopfully" pulling 500+ hp
Last edited by Rage13; Jun 21, 2002 at 06:28 PM.
thats a very good choice to go with. with that block you can go as much as 454 cubes for a small block chevy:hail:
just remember that as with every new cast block, you'll need to take it to a machine shop and have them put it in an oven and raise and lower the temperature for several hours to season in. if not then you'll put it together, fire it up, the block will actually flex and f u c k up the whole deal. gotta season da new blocks.
just remember that as with every new cast block, you'll need to take it to a machine shop and have them put it in an oven and raise and lower the temperature for several hours to season in. if not then you'll put it together, fire it up, the block will actually flex and f u c k up the whole deal. gotta season da new blocks. Supreme Member
Joined: Sep 2001
Posts: 4,231
Likes: 1
From: Manassas, VA
Car: 89 Formula Firebird
Engine: 305 - Demon 525
Transmission: 700R4
Hell yeah do it. I'm still looking to put a 400 in my car but the court screwed up my plans. Hey did you find a price on that block?
Thread Starter
Senior Member
Joined: Apr 2002
Posts: 901
Likes: 1
From: Pembroke Pines, FL
Car: 89 Firebird
Engine: 305
Transmission: T5
As a matter-a-fact, I do.
This is the price from the Summit Racing book that came in the mail yesterday.
Block with steel mains is $1,999.00
Block with ductile iron mains is $1,699.00
So whats the difference between steel, and ductile iron mains?
This is the price from the Summit Racing book that came in the mail yesterday.Block with steel mains is $1,999.00
Block with ductile iron mains is $1,699.00
So whats the difference between steel, and ductile iron mains?
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if it is a race only motor get the steel mains.......otherwise get the iron ones. on the street the steel mains will make the bearing wear un-even. the half in the block will wear out before the half in the cap due to the iron block flexing more than the steel caps. street driving actually puts more wear on an engine than a short blast down the strip even at high rpm.
Thread Starter
Senior Member
Joined: Apr 2002
Posts: 901
Likes: 1
From: Pembroke Pines, FL
Car: 89 Firebird
Engine: 305
Transmission: T5
Fast3rdGen, thanks for the info! (can always count on the good guys at ThirdGen :hail: )
i know i can get a better price, but being that my computer only half-assed works right now... thats the best price searching i could do
damn computers...
i know i can get a better price, but being that my computer only half-assed works right now... thats the best price searching i could do
damn computers... Thread
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