Has anyone installed one of the new Hemi engines into a FC or know of someone who has done it. I drove my friends new Dodge Power Wagon with one and its nice. I would not put one in my FC but if I did change it to a V8 it would be a Hemi.

 

One thing i hate is that they have 16 spark plugs.

 

What's 16 spark plugs you have to change one every 80k miles compared to 4 you have to change every 20k?

Anyway I know a guy that got a new 5.7 hemi crate engine for his Barracuda. Lighter than an old school Chrysler small block and more power than a 426 hemi (less torque though). I'm dropping a 1998 Magnum 318 in my FC. Much cheaper. Some day I'll have a new style hemi, but it will go in my '72 Dart Swinger.

 

I never looked that close to see how many spark plugs it has. It has a nice tone to it and seems to have alot of power (345HP).

 

https://www.rx7club.com/v-8-powered-rx-7s-299/mopar-383-727-combo-into-87-t2-432278/

i saw a complete motor and trans i think on a website for sale for like 5-8k came with everything you need ecu and electrical wise.

http://www.440sixpack.com/cgi-bin/ya...num=1122053257

 

Go find a 20B powered RX-7 and see if you're still talking "hemi" after that...


-Ted

 

Go find a 20B RX7 for the same price as a Hemi RX7

 

Bah, the 20b goofs up the polar moment and 50/50 weight balance.

J/K

 

man this hemi thing really bothers me.

the hemi is an inferior design. The pentroof design that has been used in all piston engines since the discontinuance of the hemi in the early 70s replaced it for a reason. with the pentroff design, it is possible to use more valves per cylinder, and thereby get a more homogeneous charge and a faster flame front. the power is distributed more evenly over the piston surface, so you get better efficiency, more power, and a longer lasting engine.

the hemi was a really good idea back when everything had side valve and flat top engines, but the pentroof is the next logical step in line. the only reason dodge makes such a big ******* deal about the new hemi stuff is for PR reasons. people remember the old hemis, and how much better they were in their time, so they think that the new ones are better too.

anyway, theres my rant for the day.

pat

 

20Bs are over priced and over hyped. They sound cool and make decent power, but stock for stock, most V8s will out power it - and that's giving the 20B the benefit of turbos!

I'm sure he'll still be set on the Hemi after a ride in a 20B and a V8.

If the 20B wasn't so damned expensive for what it is, I would have one. The fear of having one pop sways me FAR away from them.

 

I just wanted to know if someone has put a Hemi in a FC since everyone seems to favor Chevy 350’s when doing a V8 swap. I myself will always have a rotary in my FC. I will probably get my NA street ported when it needs rebuilt.

 

i think the reason that they use 350s is because they are sort of the opposite of the rotary in that they are super common and have all kinds of availability and aftermarket support, as well as cheap prices.

i'd say more than half of the v8 7s are built by people who are fed up with paying $50+ for every little stupid part that goes bad.

 

Pent-roof is better than a true hemispherical chamber, but the new hemi combustion chamber isn't a full hemisphere. In fact the chamber loks a lot like a narrow 2 valve pent-roof. A full pent-roof chamber is is still a fairly long and narrow chamber with a big bore engine. Some pent-roof engines have gotten to the point where the length of the chamber becomes problematic due to the flame speed not being able to make it to the ends of the chamber and keep up with the piston. The reason for the new hemi is simple. Diamler-Chrysler needed more power to sell their trucks and used a semi-hemi design to leverage the marketing. It's a state of the art combustion chamber and the ports are outstanding. The new hemi heads are so good they are right up there with the LS1. The new 5.7 EFI crate engine makes just under 400hp with headers and idles with something like 21" vacuum. This is with the factory ECU programming and a fairly low RPM limit. I want to see what the carbureted version would do with one of Comp Cams camshafts and 1000 more RPM.

 

No argument there. A buddy got a 240Z that previously had a V8 conversion, but was without and engine and trans. He bought a really sweet running Caprice that looked like *** for $100 and dropped the 4bbl 350 and TH350 into the Z. I'm partial to Chrysler stuff and got a '98 Magnum 318 to drop into my FC for $80 as it had a hole in a piston. The short block has been done for some time, but I'm dragging my feet on the heads. I have a Supra turbo 5 speed to go behind the 318 and have already swapped in a TII diff, new KYB AGX dampers, RS-R race springs and more.

 

I've been thinking about doing this for a while, except i'd be putting it in an FD. It wont happen until I start seeing the 6.1 liter hemi for sale though. I think it'd be an great project.

-Alex

 

I dunno...$12k for a 600hp 20B sounds a LOT cheaper than buying a Dodge Magnum Hemi?


-Ted

 

The Hemis are selling for a top dollar through wrecking yards for roughly $5k with the tranny.

 

i can get to 600hp with probably close to 8 k at most but of course its not a hemi

 

Since the hemi doesn't seem to be breaking I think the used hemi engine market will cool off quite a bit in the next year or two. The 5.7s will also get cheaper once the 6.1s are out there in numbers. Since the LA engine bellhousing will bolt right up to the new hemi I can swap one in place of my 318 without too much hassle. I just hope Mopar Performance, Edelbrock or someone supports the engine with a carb intake manifold and stand alone ignition. I'll bet MSD could rework their LS-1/LS-6 ignition control or the CPC (coil per cylinder) to work with the hemi.

http://www.mopartsracing.com/parts/blocks.html

$7625 for the EFI version with all the electronics. One might be able to get another 200hp with the $4375 you'd save over the 20B. The carb version is $7300. I wonder if Kenne Bell will have a blower system for the crate motor?

http://www.kennebell.net/supercharge...i57/hemi57.htm

 

Can you complete a 600 HP 20B conversion for me for 12K? If so, I'm interested. I'm talking 600 HP streetable here of course.

 

I'd take a streetable 300hp 20B for $6k. Where can I buy THAT one?

 

I just confirmed that a coolant seal is bad in my 13B. I will be having it rebuilt or getting a rebuilt 13B with a street port. A 20B would be nice but it would cost too much and I have to pass CA smog tests.

 

im one of those people fed up with over priced engine stuff

 

If I had a 3rd gen. rolling chassis, this engine would be mine!!

http://cgi.ebay.com/ebaymotors/6-1-H...QQcmdZViewItem

-Alex

 

i want that motor.