Recent content by patmckinneyracing

I still need to pop the heads off to check and see if there is a considerable ridge at the top of the chamber or not. Need to check for forged or cast internals as well since mine was built so late in 71' I'm worried they just chucked a cast crank in my HP 383. I also have a winnebago 440 but...

I know the 452 heads are off an RV 440 and only have approximately 30k miles on them. So they have very few miles on them compared to my 346's. The whiplash cam is supposed to work real well with 8:1 to 8.75:1 compression motors. I'll probably be able to go with pop up pistons to work with...

Ok so I'll start off with what I'm working with here. Bare bones, #'s matching stock 71' Roadrunner with a HP 383, 4 speed, 8 3/4 3.23 sure grip posi, and air conditioning. The engine has 346 stock heads and I have a pair of 452 heads as well. Also have power steering and manual brakes. Good...

Basically I'm building a sleeper stock 440 to go into my 71' Roadrunner. I pulled a 440 out of a 78' winnebago and it has the cast iron reinforcement ribs all alongside the engine and what not. I have the origional #'s matching drivetrain but don't want to put any wear on it so I'm putting it...

I have the hi-po manifolds, which is a good plus. I planned on opening them up with a burr and running a 3in. exhaust in order to help compensate for the manifolds. Just kinda sucks because the factory exhaust and mufflers are on the car and just have surface rust. The pipes are solid and I...

The main idea of the build is to keep the car looking very stock and clean up the heads and put in a mild cam. I was looking at the 484 mp grind, but a friend of mine who built mopar race motors back in the 60's and 70's suggests that I go with the 474 grind due to the 4 speed and my intentions...

Thanks for that bit of info. I was curious whether the 346 heads had the hardened valve seats so that answers that question. When I first got the car, it started right up but we weren't sure if it had those seats so we only ran it for two to three minutes. Would there be a benefit if I did go...

I've done a lil more researching on the car in the past couple months. The car has the 346 heads and am debating over rebuilding them or buying a set of 915 aluminum complete heads that were in a magazine for $900. Second, I need to know which disc brake spindles will work on my 71'...

I might just keep the origional drums on the front. Just depends on if I like them or not when I take it for a ride. I would just feel better with discs but that's just me.

Of course. I'm gonna restore this thing to factory specs. The only thing I'm considering about doing is converting those big a** drums in the front to A body disc spindle for safety purposes. I've heard plenty of scary stories about drums.

Sorry bout the links man. Like I said I'm still learning the mopars I learned off dad's dart's 440. Plus my first resto was a chevy which didn't help matters much but was still a good learning experience. Sounds like i'm gonna end up pullin the valve cover to check the numbers.

The problem with leaving the car alone is that the yellow you see isn't the origional color. Some jack*** used yellow spray paint. The next problem is the origional owner screwed up both quarters. The driver side quarter I believe is workable, but the passenger side not so god. There was at...

Do you know how rare the cassette is? I had another guy on a different forum telling me he heard that only 137 were put into RR's that year. Not sure if this is true or not but would like some verification. I know they sell for 1500 on eBay easily. But I refuse to turn this car into a racer...

How's it going folks. I am new to the website and learning about mopars basically. I'm 18 and finished turning my 80' malibu in a street-strip car and really wanted a mopar (blame dad for that lol, 67 Dart GTS):grin:. Well I scored big and found the mopar I've always wanted that was taken off...