Let's see your 198 Slant!
- Thread starter TF360
- Start date
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years ago I looked at a 1970 Duster with a 198 that I considered buying (400 bucks), but didn't. Sorry, no 198 slant to show you, mines a 225.
And they should be. In my opinion, the 225 is what they stuck with because it offered more low-end grunt and power. They are basically the same as a 225 but the rods and crankshaft. Some have used the 198 longer rod (with a 2.2/2.5 4 cylinder piston) to make a long rod 225.
michiganpat
Well-Known Member
would love to find a set of rods that aren't totally jacked up for reasonable $$....
Yeah, I had a 71 Duster 198 3 on the tree. Many have been mistaken for 225's.
Never did understand why they went from the low deck 170 and made a 198.
Lot of manufacturing cost for 27 cubes. Maybe that is why the 198 got dropped after a few years.
Just speculation on my part.
Never did understand why they went from the low deck 170 and made a 198.
Lot of manufacturing cost for 27 cubes. Maybe that is why the 198 got dropped after a few years.
Just speculation on my part.
michiganpat
Well-Known Member
1 block (RG only) vs 2 blocks
198/225 pistons are common, also, aren't they? the longer rod offsets the shorter stroke so the pistons aren't 1/2" in the hole
Correct, the ONLY difference between 198 and 225 is rods and crank. Everything else is the same. A huge money saver for mother mopar.
They were already casting low-deck 170's, which use about 10# less cast iron/block, and forging the crank & rods. The rods are also shorter, which means less steel to forge, and even greater savings on the short 3.125" stroke crank. Manifolds & pistons were the same for all (3) displacements,.....so You think it saved Mopar money to tool-up to mfr. (2) new parts that add weight & material costs..????? No......, cars were getting heavier, tires were getting larger, and more torque was needed for the smaller 'economy' version. It wasn't a good idea & didn't last long, but hey, it gave Us 7" rods we didn't have before to do light piston/high squeeze builds.
slantsixdan
=..=
Chrysler replaced the 170 with the 198 primarily for the significant cost savings in making and building/handling/processing one rather than two blocks. Moreover, the 170's output was no longer giving performance considered adequate or competitive as the cars were growing heavier and emissions regulations were beginning to tighten; the 198 gave enough of a goose to the performance of the base-equipment engine to satisfy Chrysler that the cars would be competitive.
There's lots of proof that these are the reasons, but there will always be those insistent on substituting their guesses and assumptions and fairytales for the actual, factual, well-documented reasons why [company] did [thing].
»shrug«
There's lots of proof that these are the reasons, but there will always be those insistent on substituting their guesses and assumptions and fairytales for the actual, factual, well-documented reasons why [company] did [thing].
»shrug«
think mine is a 198
dose that say gw198r or 6w198r ?
then 351 1008 ?
so its a short stoke 225 ?
dose that say gw198r or 6w198r ?
then 351 1008 ?
so its a short stoke 225 ?
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slantsixdan
=..=
G: engine built for 1971-model vehicle
W: Windsor engine plant
198: piston displacement
R: Regular-fuel engine
3511: engine built on 9 March 1971
0008: build serial number for that line on that plant on that day
198 stroke: 3.64" (versus 225 stroke 4.125")
W: Windsor engine plant
198: piston displacement
R: Regular-fuel engine
3511: engine built on 9 March 1971
0008: build serial number for that line on that plant on that day
198 stroke: 3.64" (versus 225 stroke 4.125")
So its newer then my truck
Since it didn't have a pcv
Oil bath air filter
And no pcv port on the carb thought it might be older
Thanks
Since it didn't have a pcv
Oil bath air filter
And no pcv port on the carb thought it might be older
Thanks
Naw. It's a standard stroke 198. lol
It was a tuesday....I guess I'll be ok
slantsixdan
=..=
What year is your truck? PCV = standard equipment starting in '63; if yours is a '63 or newer, someone ignorant removed the PCV system.
If there's no PCV system, at least you need a road draft tube.
Optional on trucks well into the '70s
Truck is a 67
It didn't have a tube
Who knows what hack put it together
Funny cause the more I took a part the odder it got
Was a white truck....
Inside dash ect
Took the cab off and it had tan under the paint deep down low on the fire wall
One door was yellow under the paint
The roof had a 1/4 of filler
It has a 67 dash 67 doors ...one year only
Dash has what looks like a dealer choke cable...
I forget what the vc looked like still have it in the shop it was different then the one im using..but no pcv hooked up and no port on the carb and manual choke
Oil bath air filter that clamps to the carb
Had a 67 parts truck so pulled the head and vc from that . It's gone didn't have a carb
Not sure what choke it has it might have been missing cause I have a 65 parts truck too that I saved parts from ...so now I have a stock air filter housing..and carb from the 65 parts truck that had a good exhaust manifold
And il.using the 65 dash just cause it's cleaner look
This thing is quite the Frankenstein truck
It didn't have a tube
Who knows what hack put it together
Funny cause the more I took a part the odder it got
Was a white truck....
Inside dash ect
Took the cab off and it had tan under the paint deep down low on the fire wall
One door was yellow under the paint
The roof had a 1/4 of filler
It has a 67 dash 67 doors ...one year only
Dash has what looks like a dealer choke cable...
I forget what the vc looked like still have it in the shop it was different then the one im using..but no pcv hooked up and no port on the carb and manual choke
Oil bath air filter that clamps to the carb
Had a 67 parts truck so pulled the head and vc from that . It's gone didn't have a carb
Not sure what choke it has it might have been missing cause I have a 65 parts truck too that I saved parts from ...so now I have a stock air filter housing..and carb from the 65 parts truck that had a good exhaust manifold
And il.using the 65 dash just cause it's cleaner look
This thing is quite the Frankenstein truck
Oh and I bought a 64 front header panel so it will have the quad headlights that was off a d300 ....the one fender was off the parts truck....and i bought one door on ebay
Ill make a shop truck build on it when I have time
Getting cab back from body shop monday
Ill make a shop truck build on it when I have time
Getting cab back from body shop monday
slantsixdan
=..=
Quad-headlamp '61-'64 front end wins in my book.
Yeah lucky enough the 67 hood fits them
68 nooooo 68 is one year only hood
Funny how much i have learned about this trucks
68 nooooo 68 is one year only hood
Funny how much i have learned about this trucks
So Chrysler shut down an entire engine assy. line when they dumped the low deck Slant block?
slantsixdan
=..=
No.
French demon
Well-Known Member
My 1971 198 cid, originally with a 3-speed on the floor (now a 4-speed A833) and a '71 340 26" radiator.
Thanks to SlantsixDan advices, now it runs well with its rebuilt Carter BBS carb
I'm the third owner and the car has 80,000km on the odometer
In motion :
Thanks to SlantsixDan advices, now it runs well with its rebuilt Carter BBS carb
I'm the third owner and the car has 80,000km on the odometer
In motion :
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