Opinion on Clifford mods for Slant 6 motors

-
cdnEHbody said:
Seems like am awful lot spent on a slant to hit 200hp n/a. Its a labour of love and enjoyment for me if i do some refreshing and goodies but i dont expect massive hp returns on my money spent.

A turbo will really be the easiest bet for hp, even a simple draw through with no intercooler
Click to expand...

Seems like most of the turbo conversions for this motor are pretty substantial, a lot of fabricating to get things to fit. Is that not the case?
 
Depends on your fab abilities, draw through needs no intercooler and the proper turbo and any proper sized carb cfm wise, blow through needs alot more including intercooling and a carb that can handle boost.

If you can build the manifold, and source the proper turbo from a 301 trans am turbo or the like with a draw through it might not be to bad. Of course your a bit limited on things this way. Id want a wideband too so you can see whats up with mixture too.

Obviously you can make a ton more power with an intercooled blow through....but more stuff and tuning etc..
 
cdnEHbody said:
Depends on your fab abilities, draw through needs no intercooler and the proper turbo and any proper sized carb cfm wise, blow through needs alot more including intercooling and a carb that can handle boost.

If you can build the manifold, and source the proper turbo from a 301 trans am turbo or the like with a draw through it might not be to bad. Of course your a bit limited on things this way. Id want a wideband too so you can see whats up with mixture too.

Obviously you can make a ton more power with an intercooled blow through....but more stuff and tuning etc..
Click to expand...

I'm no fabricator that's for sure, so this would mean having someone else do the fabricating for a turbo build. Probably not something I'm ready to tackle yet.
 
A knowledge guy told me once " Clifford is a hero only in his won mind".

Research FABO and SlantSix.org like mentioned above, and realize you can add some torque and power, but realistically it will be limited.
 
Im in that boat too.

Im have refreshed many bike engines, and i know i can handle a slant. But i expect my compression increase, rv cam and bigher exhaust to make the car more traffic friendly as a DD, not a 318 killer. Gearing, and converter might make more difference, but, is it worth the cash to me. By then with a new diff and whatnot id rather have the v8
 
barbee6043 said:
A knowledge guy told me once " Clifford is a hero only in his won mind".

Research FABO and SlantSix.org like mentioned above, and realize you can add some torque and power, but realistically it will be limited.
Click to expand...

Thanks, I'm all about researching. I won't try something unless I've thoroughly checked it out. This site has definitely given me GREAT info so far. It's been helpful with my current 340 driver and this post has been helpful too.
 
I might add, that the super six, or adding the 2 bbl carb helps a bunch, also in mileage would you believe. Been my experience and others have said the same.

Too bad ( me included) can be so quick to jerk out that "hillside hemi"/
 
More smiles-per-gallon and smiles-per-dollar with a Slant-6 'cause it's different to what everyone else has.
 
slantsixdan said:
More smiles-per-gallon and smiles-per-dollar with a Slant-6 'cause it's different to what everyone else has.
Click to expand...

I must agree, that's probably what's so intriguing about this whole thing. The first reaction almost always is to throw in a V8. Now I've got a solid car with the original /6 and I'm thinking it's almost my duty to revive this car and restore it to it's former glory. My daily driver is the perfect example, 71 Swinger, original slant 6, yanked for a 340.
 
slantsixdan said:
More smiles-per-gallon and smiles-per-dollar with a Slant-6 'cause it's different to what everyone else has.
Click to expand...

Indeed, suprising how many people look at them at parking lot meets.

Keep your expectations real with your n/a rebuild and speed goodies and its all fun.

In a good state of tune and a good hot ignition system the car has been a pleasure for 3 season daily use in my valiant. It is a bit tired so im gathering stuff for a refresh in the future.
 
I will admit I have had many high performance mopars, yes I am old and still like to feel torque, go fast.. and if I did not have a V8 car, I would probably not be so quick to keep my slants!! Just wish the stuff on the right side were easier to reach!!! ha
 
slantsixdan said:
You'll hear the name "Clifford" come up, but be very careful before you decide to spend any money with Clifford. They have a long and ugly reputation for being a bunch of clowns; see for example here, here, here, here, and here. Much of what they sell is inaccurately described, and a lot of it is not even slightly cost-effective. The good news is that you don't need to go to Clifford to get hot rod parts for slant-6s; there are lots of other, better options. See for example Dutra Duals and header options discussed in this thread and this one, Erson custom cams, HEI ignition upgrade, Mike Jeffreys windage trays, Hurricane intakes, other exotic intakes. Hi-perf engine buildup here, high-perf parts and build info here. (some of these links may be broken while we're waiting for slantsix.org to come back up)

As for Clifford's recipe they sent you, No. Unless the goal is to just funnel money to Clifford, you don't just blindly take some prescribed amount off the head and do other such mods. That way lies sadness, despair, and wasted money. Instead, you measure and figure out where you are with your particular parts—combustion chamber volume varies a lot, for example—and then you do the calculations to figure out exactly where you want to be with the specific (pref non-Clifford/non-Comp) cam you'll run, the gasoline you can get, the altitude you're at, the kind of driving you'll be doing, etc, you talk it over with people who actually know what the eff they're talking about (not just trying to make the cash register ring) and then you have your answer as to how much to mill off the head and/or block.
Click to expand...
 
How do you feel about a long rod 225 build. That way you're not cutting the block and having to concern yourself with pushrod lengths and other things that come into play when you deck a block?
 
65PlumCrzy said:
How do you feel about a long rod 225 build. That way you're not cutting the block and having to concern yourself with pushrod lengths and other things that come into play when you deck a block?
Click to expand...

What would that do for the rest of the build? Would that change which cam and lifters are needed, and what would I do with the head in that scenario, still just a port/polish? Sounds intriguing
 
65PlumCrzy said:
How do you feel about a long rod 225 build. That way you're not cutting the block and having to concern yourself with pushrod lengths and other things that come into play when you deck a block?
Click to expand...
Not cost effective for a street motor. Just the K-1/ Molner rods and Wiesco pistons will cost almost $1100.
 
Last edited:
cdnEHbody said:
Indeed, suprising how many people look at them at parking lot meets.

Keep your expectations real with your n/a rebuild and speed goodies and its all fun.
Click to expand...

Exactly, I had my 66 Valiant at the Florida Mopar ***. show, last weekend. It was an ugly duckling, among swans. I had many people looking at it, and not just glances. Had many ask me to fire it up. I have less then $3,000 in the whole car (including buying the car), as the whole idea was to build a low budget bracket racer. Got a 4th place trophy in the "A" body class, due to it being unique.
 
Dave Haertel said:
What would that do for the rest of the build? Would that change which cam and lifters are needed, and what would I do with the head in that scenario, still just a port/polish? Sounds intriguing
Click to expand...
No, the 198 rods are longer which would move the piston further up the cylinder. The 2.2l piston pins are located differently to allow for the longer rod to work without pushing the piston into the valves. From my understanding, its an alternative to milling a block so much that you have to start addressing pushrod lengths. It has the potential to increase compression upwards to 11.5:1 with no block or head mods.
 
I completely rebuilt the 225 in my 64 Val.
+.040, .080 milled and rebuilt head, pocket ported by me, gasket matched, mild ported stock intake, reground Oregon cam, larger ehhaust, NGK extended nose plugs. 3.23 gear and 3 on the tree and I have no problem at all keeping up with traffic. It'll easily smoke the tires if I wanted but that's kid stuff. Drove it 320 miles each way to Carlisle and got 23.8 MPG going there on one tank. I wanted to experience what my dad went through so it still has points ignition for now. Untouched in 2500 trouble free miles.
I already have 2 small block cudas and an entire spare 340 4 speed that I easily could've rebuilt and swapped in but I wanted a slanty. Now that I've driven it "stock" I've acquired a 2 barrel intake and carb and it may get a Pishta pipe sometime in the future.
Driving around with the top down people ask all the time "Slant 6?" followed by "pushbutton trans"?
 
You must log in or register to reply here.
-

Back
Top