305 cube limit. A 318 would need to be destroked.I'd almost run the 318 as is, and accept the weight penalty, or see if you could run a poly 318, which is already heavier than the LA 318.
305 cube limit. A 318 would need to be destroked.I'd almost run the 318 as is, and accept the weight penalty, or see if you could run a poly 318, which is already heavier than the LA 318.
He can run a 318 with a 100# weight penalty. No penalty if he runs 5L engine.305 cube limit. A 318 would need to be destroked.
He can run a 318 with a 100# weight penalty. No penalty if he runs 5L engine.
100 pound weight penalty. With the given info, it doesn't state where the weight goes.How much is the weight penalty and does it matter where the weight goes?
100 pound weight penalty. With the given info, it doesn't state where the weight goes.
450+ shouldn't be too tough.
Right. All of the polys had forged cranks as did most of the 273 LA motors. One of the reasons for the LA motor was to cut weight. I think a cast crank is okay to about 650 HP. i don't expect more than 500-510.So sometime in the late 50s, early 60s Chrysler wanted a car that could be run in a 5 liter class, so they built a 301 poly engine and offered it to the general public in the body they wanted to use. This was a short stroke 318 poly. The only change that you have to make to use it in an LA motor was it had an 8 bolt crank like a hemi, so you needed a hemi flex plate or what ever the conversion is for a 4 speed. In the 1980s a machine shop that I used made dirt track stock car motors out of LA motors with these cranks. Since no one builds polys to speak of these days you might find one cheap. I believe they were forged cranks.