Stroker kit maybe? 360 to a 408 or so?
Again, the answer to your question is: what do you want out of your engine - power or economy or reliability and durability? If you're kinda happy with what you have but just want a little more power and economy then just focus on some add on's like a good ignition system and some roller tip rockers and a bigger carb (for power) and a good tune job or if you want more power then you rip your engine out and tear it apart and have it bored for bigger pistons and a higher compression ratio, deck the block and buy a good set of aftermarket heads. The combinations and possibilities are almost endless. Just decide what you want.Jesus guys, I wasn't expecting all of this information. I asked for it though, so thanks.
I'm still a total beginner with working on stuff and especially with engines, so this is kind of a lot. As such, let me try to narrow things down a bit. I don't have the tools (or knowledge, for that matter) to do a motor swap, so for now I'm going to rule out a magnum or a big block. They would be nice, but for my purposes I think it'll be far more manageable for me to just modify the engine I already have. To bring everyone up to speed if they haven't read the whole thread, this motor is an early 90s (not sure on the exact year so let's call it a 90) 360, has an Edelbrock 1406 600cfm 4 barrel carb, LD340 intake, headers, and dual exhaust. Everything else is stock. So, the question now is where to go from here. I'm a little confused on compression because the comments are conflicting. Some of you are saying stock is fine, some are saying to go higher. So which is it? And how do you go about increasing compression?
For the record, I most likely won't be tearing into this until next year sometime, so I've got time to think about it. I just wanted to start asking around to get some ideas.
So what pistons/heads/cam do you think would work best for this motor? I want to figure out the combination of parts I do/don't want so I can start looking at prices and figure out how much I'm willing to spend.Yeah if you don’t have the ability to do an engine swap, then doing an actual build is going to be tough.
I would do the above mentioned with your ignition, carb, rockers and such. I might also add a better cam. But keep In mind you are going to be limited with what you can achieve with your current bottom end. This is what I was getting at when I said 350 out of your current motor is very optimistic with your current pistons.
Different pistons is pretty much the only meaningful way to bump up compression. You can deck heads and a few other things to make some small gains but new pistons is the big one
Some minor porting in factory heads can wake up a stock motor too. But that’s tricky and you can ruin a head if you don’t know what you are doing.
I’m probably not the best guy to ask. I’ve never done a 360 and It’s been 15 years since I did a full build, I’m kind of out of the loop.So what pistons/heads/cam do you think would work best for this motor? I want to figure out the combination of parts I do/don't want so I can start looking at prices and figure out how much I'm willing to spend.
A lot of stuff is interchangeable between the LA and magnum series isn't it? I know not all, but I've read about guys putting magnum heads on an LA block. Don't know if that's be worth it really though.I would find a '97 or '98 (I forget which year it is) and later Magnum and hop it up a bit like I did. It's a better engine for sure and starting off with better power. Your engine has decent heads on it now but if you're looking for more then you'll need decide if you want aluminum heads or steel heads because that choice determines how much compression you will need. Aluminum doesn't hold as much heat as steel heads do so you can bump the squish up a bit over steel. I don't know what your octane rating is in your area but in my parts, the best gas I can buy is 94 octane out of the pump and therefore can not go more than 9.5:1 (approx) with steel or around 10.25:1 (approx) with aluminum if you want to protect your new engine from detonation damage, and then of course choose a cam for the RPM's you plan to do. You already have a good intake, get good a set of roller rockers and a Pertronix ignition system and your out digging trenches!
Yeah I watched this one, which is why I was a little confused when guys were saying you have to tear into the bottom end to break 300.And here is a mostly stock LA360 making just over 300 horsepower, so 350 horsepower would be possible on a stock 360 with a more aggressive cam, better springs a set of roller rockers, and porting.
That sounds like its going to make some decent power 1970Pelle. Can't wait to hear how it turns out!Thank you Canadian Country Boy, I have reviewed the Hot Rod article and Video on YouTube. Along with quite a few others. I have been around Mopar's since I was 15. And as my career for 28 years as a dealership tech. I also had the chance to work at the Conner Ave Plant for a period of time before it closed. I had a spot in R&D on the Prowler line. A story for another thread.
So building engines is very natural for me. This current build should yield some good HP numbers. With the compression ratio, the choice in camshaft= Comp Cams 20-220-3 with Comp valve springs and valve hardware, lifters. Edlebrock performer intake manifold (dual plane) with suggested mods. I have changed my mind on Carbs, I like the Edelbrocks and the Quick Fuel carbs work very good also. So if I can get a better deal on the quick fuel that's what I'll run. An HEI ignition, and all the head work, the engine should run pretty decent. I'm not expecting a wheel standing power house. I also built a transmission to match the engine.
So we'll see in a short while. I'm also dealing with a small bit of body work, at the same time. Both my doors have broken(cracked) around the lower door hinge. Which has doomed the doors out, I have located really nice used replacements. I'm going to change the front fenders also run your hand down the top of each fender. Its a bumpy ride, most likely someone laid across the fenders working under the hood and didn't watch how much weight they put on the tops of the fenders. Trashed them both, I could use a thin layer of body filler to fix the issue. I hate body filler, period.