PHR 361 "Forgotten Motor" Build - 618HP, 520 Torque - Good Read!

[ocdart]

I just received my January 2014 Popular Hot Rodding in the mail today and found an interesting article on Hinkle Performance (London, KY) build of what they're calling "Mopar's throwaway big-block" 361.
You're going to have to read the article for all of the details, but using some creative machining of the stock forged crank and innovative thinking, they ended up with a 412" engine that dyno'd at 618 HP @ 7000 rpm and 520 ft-lbs. of torque at 5100 rpm. This is a pump-gas friendly 10.4:1 that pumps out 420 ft-lbs. of torque at 2500 rpm and climbs from there.
Good read!

 

[Furiousvip]

I had a 361 in my 66 Coronet...Never understood why the 361 never caught on.

 

[rumblefish360]

Just small in cubes. The 383 is bigger by 22 cubes of bigger bore. Just like the 318 - 340 22 cube differance. Since there a short stroke big block, they act like big small blocks. And you can always see the wonderful warming response when anybody says they wanna do up there 318. (Super sarcasim intended there)

From the factory they have what's needed to perform well or better when modified. This build is no longer a 361 cube engine anymore than what you would say about a 360 to 408 stroker. I feel it was a misleading title.

I'd really like to see what a 361 can really do, not a stroked 361. I don't know how well the heads can flow but the stock valves sizes are right for some good performance.
Anybody know what heads came on the 361 and what the can be ported out to with stock valves?

 

[greymouser7]

Just small in cubes...
I'd really like to see what a 361 can really do, not a stroked 361....

One of IQ52's competitor's used a 361 in the fall of 2011's Mopar Muscle's engine build competition. If i remember right though, a valve hit the piston on that build.

In the competition they ran Jim's motor on the dyno without any coolant flow...

Those builds all were capable of sick power. Even after castrophe Jim's big block squeezed out over 700hp with a few repairs. His valve guides got too hot among other things..

 

[rbdart]

Just small in cubes. The 383 is bigger by 22 cubes of bigger bore. Just like the 318 - 340 22 cube differance. Since there a short stroke big block, they act like big small blocks. And you can always see the wonderful warming response when anybody says they wanna do up there 318. (Super sarcasim intended there)

From the factory they have what's needed to perform well or better when modified. This build is no longer a 361 cube engine anymore than what you would say about a 360 to 408 stroker. I feel it was a misleading title.

I'd really like to see what a 361 can really do, not a stroked 361. I don't know how well the heads can flow but the stock valves sizes are right for some good performance.
Anybody know what heads came on the 361 and what the can be ported out to with stock valves?

Basically 60-62 361-383-413 used casting#2206324....in 63 they went to#2463200 casting...64-67 361-383 went to the 2406516 all with 2.08 and 1.60 valves...some early b rb heads 58-61 used a 1.95/1.60 valve combo..this info came from MOPAR PERF BBLK B-RB ENGINES[part # P4876825]