Grendel

iTrader: (27)

So, I got a 3.185 stroke crank, really cheaply. I also have a set of forged 4.030 pistons.

So, what block and rods should I use? I am thinking high rev 330.

mark21742

Is the crank out of a stock 4.8? If it is, and the pub height is tight you can probably use stock 4.8 rods. Look for a la4/9, or 4.8/5.3 iron block and bore it out....good strong and pretty much the same blocks, just different bore sizes, so whichever you can get cheaper.

Just curious, what are your plans? Going FI?

Grendel

iTrader: (27)

The cranks is a Callies Magnum XL.

No plans yet, just had a set of spare forged pistons and acquired this crank.

Since the pistons I own are 11:1, I thought I'd build this as a NO2 motor and stuff it in a 70 Camaro or something.

Sales2@Texas-speed

iTrader: (5)

What compression distance on those pistons?

Grendel

iTrader: (27)

They're Wiseco pistons part #K464x3 so the compression distance is 1.110"

mark21742

Nice, kinda like the old 69 302 on steroids lol. Sounds fun, throw on an average set of stock potted heads, midsized cam and it should be a screamer!

Grendel

iTrader: (27)

That's the plan.

The sad thing, is that I don't even have a car for this yet... then again, this is pretty much how all my projects start.

I think I may use a set of l92 heads I have here... also have a set of GMPP 1.85 rockers, so I could throw a hot cam in it, springs and call it good.

Sales2@Texas-speed

iTrader: (5)

Jeez, so you need in the neighborhood of a 6.53x" rod with a .927" small end.....Hmm.

Grendel

iTrader: (27)

Not sure I really need it... heh, could just go with a stock length rod and be short stroking.

Got something that would work?

mark21742

Watch it man, you peeked Matt's intrest now lol

Grendel

iTrader: (27)

That's sort of the point, my friend.

Seeing what I can put together with the sum of cheap cast off parts.

Also, I am not married to 330". I can go with whatever fits the crank and pistons, as that's all I own at this point.

I do want to rev the **** out of it though.

mark21742

I spin my 408 to 8,000 rpms and it sounds like God is pissed and coming for ya....I couldn't imagine what a 10,000+ rpm ls motor would sound like lol

Grendel

iTrader: (27)

I look forward to that. I built a forged 408 with a Whipple 3.3L huffer on top for my 70 GMC. No idea what it's redline will be yet.

I think small cubes, winding high will be fun.

mark21742

I'm in for this build!

Drokkers

iTrader: (2)

^ditto. i dont even know what all this means completely but i like high revving motors

Sales2@Texas-speed

iTrader: (5)

You could run a shorter rod than that, but your pistons would be WAY down in the hole. You'd have the same displacement still. You'd be way down on compression, have terrible quench, etc. If you do it, you want the longer rod!!

Grendel

iTrader: (27)

So, you got something that will work?

mark21742

If Matt doesn't have it I think he can find someone to make it lol

Ok this it going to sound strange, but have you looked at, or heard of running Honda rods?

Grendel

iTrader: (27)

I haven't really looked too hard at anything, but that could be funny.

I did find a set of Ferrari V12 Carrillo rods that would work in my parts bin, but that would be a bit much... considering that they were probably 8K. My father used to restore classic and exotic cars.

Sales2@Texas-speed

iTrader: (5)

Yes and no...shelf stock won't work....BBC comes closest with the 6.535" length, but has the wrong sizing on both ends.

Likely going to be a custom rod (there goes the budget aspect of this build). Might be less expensive and faster build time to get a shelf stock rod and custom piston!