Adding std SB heads (oil trhu deck) to a Magnum block.

[ratbastad]

What can be done to add the STD 340/360/RHS LA heads to a Magnum 360 block?

Can the decks be drilled ?

Thanx....

Rat

 

[70aarcuda]

any reason why you dont use the magnum version?

I know that does answer your question

 

[rumblefish360]

Yes, a machinest will have to understand the block and then the drilling can be done/added.

 

[ratbastad]

Yah there is a reason champ !!

All the LA (non Magnum) parts reqd are already in hand - very nice roller rockers/shafts/valve covers, intake, headers etc.

Rat

 

[rumblefish360]

Ah, yea, I'd hate to purchase everything over again. Use what ya got! It's better than sittin on the side lines watching.

 

[DionR]

You could get a 89-91 360 block. Roller cam setup, but drilled for shaft rockers. Can't think of anything the Magnum block would add over that, except maybe a better compression piston if you don't plan to rebuild it.

Just a thought.

 

[moper]

You're better off just going with new oil thru pushrods and oiling the top end that way. Just be sure your lifters have the oil hole on top. That Magnum block/LA top end oiling is a very difficult deal to get done. The passage must be exactly placed and it's like 6" long. If they are off even 2-3° in any direction you will not line up with the cam bearing hole.

I should add this is how a lot of high rpm race engines are done because it lets more oil be diverted to the lower end.

 

[70aarcuda]

You're better off just going with new oil thru pushrods and oiling the top end that way. Just be sure your lifters have the oil hole on top. That Magnum block/LA top end oiling is a very difficult deal to get done. The passage must be exactly placed and it's like 6" long. If they are off even 2-3° in any direction you will not line up with the cam bearing hole.

I should add this is how a lot of high rpm race engines are done because it lets more oil be diverted to the lower end.

will oiling thru the pushrods provide oil to the shaft?....

are there some rockers that will oil from the pushrod to the shafts....that is what i see as a problem...

 

[moper]

The pushrod feeds the rocker socket, that has a driled passage to the shaft area and the rocker tip. Also remember with oil thru pushrods, it's oiling 100% of the time. Not for 20° of 360 like the shaft system is.

 

[dogbreath]

Boy i'm lost on this one , how are shaft mounted rockers going to get enough oil through the pushrods . They were never designed for this unless by using some kind of special rockers , sounds like gauld city to me .