Read an article about putting a 360 crank in a 318. Isn't that just a smaller bore 360?
No, I’d call it a destroked 360. (345 cid IIRC)
The problem with this 360 crank into a 318 is pistons. Not the displacement.
Wouldn't it be better to keep the cubic inch and work on upper end stuff and 10.5 or better pistons?
Yes
Or turn the 360 into a 408. I am not upto date on strokers.
That would be fine as well. This is one place I’d take advantage of. Increasing the engine size over a modern car. Be it the stroker route or just an over bored 360. .030 = 365, .040 = 367 etc.
Stroker kits are pricey. (As we know) You could do very well with simply over boring the 360. The 360 vs the 408 will require the next step up in gear ratio to remain competitive due the strokers toque advantage. Piston selection is very good in ether forged or hyperutecic for ether sized engine. 10.5-1 is a little harder for the 360 with a flat top piston. A dome is required, or a really small chambered head.
So I am thinking 360 bored 30 over good heads that breath, purple shaft, AVS on top of a performer intake. Y tube headers 3 inch exhaust. Don't need a fire breather at 73. Just something to put these modern cars in there place once in a while. Thanks again may stroke the 360 not sure yet.
Going with a 4 inch arm provides a good amount of low end grunt over the short stroke. I can see an easy 40ft. lbs. (build dependent) once you reach peak power, the longer stroke drops off in power quicker while the shorter stroke tends to hang on to the HP a bit longer. Of course, this is build parts dependent.
Personally I wouldn’t do a (Tri) “Y” header or a 3 inch exhaust unless the muffler was a turbo muffler. The Performer is a decent street driving intake. However, for putting some modern cars in there place, it’s not what I would use.
Here’s the question.
What size AVS?
What purple shaft do you have?
What are the other parts? The build looks idea/plan?
What car?
The biggest problem to match and exceed a modern cars performance is they have every advantage with the exception of cubic inches in many cases. Our biggest limitation is only a 3 speed transmission. Or just simply ending in a 1:1 final drive.
We can upgrade to most any part they have. Variable intake runner length, cylinder shut down are not an easy task and one I’ve seen no one try to copy. Variable cam timing is another trick that is difficult to copy.
Everything else we can match or come very close to.
On the cylinder heads, if your not lifting the valve up as high as the heads can flow air, your leaving power on the table. The modern cars do this a bit but when fellas add in a cam, there lifting the valve up as high as possible to extract as much as possible.
