Re: 305 blocks- whats the best one to use ?
 

I think the "201"? truck blocks are the stock 305 blocks of choice. Seems I remember the Shermans using them when they ran that combo a few years ago. Cliff said they were stronger.

Re: 305 blocks- whats the best one to use ?
 

Kenny,

The best block to use is the block that you have. This would be most cost effective considering the total cost to machine another block to duplicate what you already have. Sleeve that block. Knowing the history of the engine and the head issue-this crack was caused by water in the cylinder. Just my two cents.

Respectfully submitted,

Steve Williams

Re: 305 blocks- whats the best one to use ?
 

Kenny,Don & all
I finnaly got back on line. About 6 yrs ago I did the sleeved 350 4 bolt deal. When we began to assemble we were told what Jerry told you. I called Calif. and they said no way. I guess we need to ask Travis about that 80 vett. They should be ok if that is correct. I think I got 2 cases of beer for my $800.00 block.
Jim

Re: 305 blocks- whats the best one to use ?
 

Mortec shows 2 different castings # for 305 4bolt blocks. They say there for hd trucks of course there Canadian.

John

Re: 305 blocks- whats the best one to use ?
 

Thats really suprising , I live in Canada and have never heard of a production 4 bolt main 305 block .
I am going to investigate this a little further, just for my own interest. I remember a few folks claiming their mid '80s Monte Carlo SS were 4 bolt but when they tore them down they were always 2 bolt main.

I guess you have to wonder why a HD truck would be 305 equipped in the first place ?

Re: 305 blocks- whats the best one to use ?
 

Casting # 361979 460778


John

Re: 305 blocks- whats the best one to use ?
 

http://www.mortec.com/castnum.htm

Re: 305 blocks- whats the best one to use ?
 

Really dont think they exist ... has anyone ever seen one ??? Small block interchange manual SA Design #SA 55 shows #361979 as 305 78-79 2 bolt main and #460778 as the same . (pg7). It states "these5.0 liter Gen. 1 motors are all medium journal 2.45" blocks and production blocks were only made with two-bolt main bearing caps". (pg 13 ).

Re: 305 blocks- whats the best one to use ?
 

Yes i use to have one, they were mainly used for marine use.

Re: 305 blocks- whats the best one to use ?
 

I checked my core supply i have a 305 block #460778 and it is a 4 bolt main. I also have 350 010 blocks that are 4 bolt and 2 bolt.