I have always been into big blocks, strokers and such. Strong small blocks are awesome, always wanted a Gen II hemi, and have been diving into the Gen III world. I bet most of you guys feel the same about the older mopar engines.

My question is what do you guys ( racers, street/strip guys, etc) think of the Gen III engine? Most of the swaps I see are for relatively stock engines, but what about the highly modified engines? Are you impressed with the capabilities that they have shown in an older Mopar, or do you think it is wrong? The gen III is our LS, just want an opinion on what the rest of Moparts thinks.

I like them. Some guys here poop on them because there's been no "real" high hp build allegedly like some W8/9's have been built to. Reliable 1000hp capable blocks from a wrecker yard, junkyard heads capable of 400+ cfm when ported (Apaches, you can buy them complete for about $800 a set off of LXForums), factory hydraulic lifters good for 7500 rpm. Only real short coming is the factory valvetrain (that you can get out of any junkyard from a Ram 1500) is good to "only" mid .650" lift before it starts to get sketchy lol. Manton brought out their rocker system that they claim is good for .850" of lift with stock valves but it's $3500. Pricey yes but how much is a rocker system for an LA capable of .850" of lift going to set you back? Maybe not $3500 but it's going to be in that stratosphere. Guys cry about how expensive cams and intakes are, but to get LA stuff that's as capable as junkyard Gen III parts is going to cost you a lot more (do they even make an aftermarket LA block now?)

Not hating on the LA/B/RB, but some of the complaints of the Gen III border on comedy

Mopar really dropped the ball on the gen3 hemis. This doesn’t go with that and that doesn’t go with this. I laugh when I see guys buying and selling only to buy again. You gotta be a nasa scientists to figure it all out and in the end most are still slower than 40 year old technology. I’ll pass but I may buy your old school junk. Lol 😂

VVT vs non VVT, that's about the only real difference. Cams are different and so are the front drives. Non VVT crank can be used in a VVT engine with a spacer, VVT crank can be machined to work in a non VVT block (need to turn some off of the front snout, can't remember the exact dimension but it's a simple lathe operation), hardly NASA level understanding

I was into BBs a long time ago then went to LA.. now I'm getting into the
genIII.. I want to replace the 440 in my 38 PLY with a genIII.. to me its
money well spent

I like them, but I see a lot of 1000hp "builds" and they run in the 10's. I know the current cars are heavy, but dang. I think part of it too for me is the fuel injection and tuning with a laptop. I know there are ways around that, but I am apprehensive.

I am building my second engine to swap in my 65 Coronet. I will never build another big block again. You can make 700-750 HP with stock rockers and hyd roller cam. To build a 750HP big block you will spend a bunch in valve train parts solid roller and the block will be marginal. Gen 3 is lighter no plug wires no distributor caps. The 426 6.1 based engine in my 66 runs 11.00s at 3750# through full exhaust to the bumper on drag radials and I drive it a lot. Change the oil, never had the valve covers off in 4 years.

I don't know if impress is the right word, more so intrigued. Its capable of making serious power, but isn't capable (yet) of being enough cubes to make really big power NA.

Its a well designed modern engine. Part of its lure to me, similar to LS stuff, is boosting it with its existing EFI setup. Of course just like the old stuff you have to pay a Chrysler tax and its hard to get parts...

I don't like Gen III Hemi stuff in pre mid 70s stuff, same for LS stuff in the GMs.

Dude
MSD Hemi 6 with a intake and Carb or carbs. Set the timing with a laptop and forget it. You will never need to touch it again.

Yeah that's the thing with newer builds, lots of 1000 hp dyno queens. Take a look at the more serious HC/Demon guys and you'll see legit et's matching hp claims.
The ingredients are there for a high HP NA build but no ones done it yet

Thats because most change over to turbos.. its easier

and a high HP NA G3 build would probably be the most expensive compared to all other Mopar engine platforms.

I guess we need to determine whats a high HP build?

Ohhhh ya and the old stuff keeps getting cheaper for me to buy. The Gen3’s are almost as fun beating at the track as the LS Chevy junk.

I have sold most of my smallblock stuff and I'm almost ready for the dyno on my gen3 project. So yeah I'm drinking the Koolaid.

It is a better engine design than the older stuff but at this point in my career I'm not going to switch. I have decided to ignore SB and /6 engines from now on and just focus on big blocks. I see the G3 as a superior design to the big block but I'm not interested in building one for any of my projects. I have a 5.7 in my Dodge Ram pickup truck and I'm happy with it stone stock and doing its thing.

THIS ONE is fun! I sure like the crate one they have now too! Wish I could afford one.

I like them, Picked up a 2012 5.7 for core price awhile back. If I didn't have a fresh 400 short block and new heads sitting in the shop already. Yep, I'd of made the switch. Plenty of fast gen 3's, Steff, six pack gut, Dustin, Granted, I'm not looking to set the world on fire hp wise, but after splitting a cylinder wall in the wife's car. I'm down to my last good stock block. At least I'm hoping it's good, waiting on sonic numbers and mag. So I might be switching sooner than later!

I like them.
At my former job we had a few opportunities to do all kinds of stuff, and blah blah blah.
It was a weird and exciting time.

Years ago I posted something like "just about anywhere a small block would go,
on wherever you would expect to see a small block... if you want to do a gen 3, you can".
I still kinda feel that way.

Do I want to see one under the hood of my 69 B body? Nope.
I chose the B/RB engine family a long time ago.

That doesn't mean I wouldn't be open to it in some other future project.
I have three of them...two in drivers/workhorses, and one that I rebuilt stock, other than a mild cam,
painted turquoise, and threw in the corner. because you never know what might come along.

I think it's the way to go if we want to keep Mopar on the map. I have a small block stroker in my 68 Cuda that I'm plotting a future Gen 3 for with a roots type of blower.