building a cheap short stroke motor
building a cheap short stroke motor 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.
So, what block and rods should I use? I am thinking high rev 330.
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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?
Just curious, what are your plans? Going FI?
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?
Just curious, what are your plans? Going FI?
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.
What compression distance on those pistons?
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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.
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Jeez, so you need in the neighborhood of a 6.53x" rod with a .927" small end.....Hmm.
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Verdad Gallardo 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.
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.
I think small cubes, winding high will be fun.
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!!
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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.
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!
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!
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POWERBOND - ASP - AND MORE!
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!