I’d like to clarify your opening statement. The slant six was developed in 1958 and first hit production in the 1960 model year. First engines were the 170 and 225 concurrently. By the late 1960’s, the 170 was replaced with the 198.
@talljohnsfunshop27227 ай бұрын
One advantage to 75 and newer head are flame hardened exaust seats for unleaded fuel
@brianjuffs46622 жыл бұрын
You should remove the crush washers, that's what the tube is for.
@YoshimoshiGarage2 жыл бұрын
Yes, good call. I noticed this core head still had them, too. Having the crush washers actually pulls the plug back into the head a little bit and makes then run a temp range cooler as well, which is usually not what you want.
@bryandickerson53654 ай бұрын
@@YoshimoshiGarage More good info. I’m contemplating building a Valiant with a “hot” slant-six. Nothing crazy, but hoping to get a good combo of performance and mpg. Planning on 5 speed to help with mpg. Any recommendations on building a 200+hp S6 capable of 25+ highway mpg (w/ overdrive)?
@sparkplug-ne5wi4 ай бұрын
1965 heads with the cups i take off the crush washer because you have the cup
@Carlos-hn8mu2 жыл бұрын
My slant six head is stamped with the word special.this must mean theirs tree different heads.
@stevereid60882 жыл бұрын
That is a very rare head as it's for the aluminum block. There were only 55kish of those blocks made
@reallyaintbuynit2018 Жыл бұрын
I just watched Steve Magnante's video last week after he found an aluminum slant in a wrecking yard and he pointed that out.
@rcnelson Жыл бұрын
I still haven't seen what the "peanut head" slant six chamber looks like. Thumbs up for the video, though, which was informative.
@bryandickerson53654 ай бұрын
That’s good stuff - thanks!
@bruceroberts14049 ай бұрын
I have a head that is different from all that I have seen My slant 6 head uses 5/8 plugs, but has NO smog ports at all. My guess is this is a late 74 head if in fact the smog port started in 75. The head at this moment is still on the car and I do not have casting numbers yet. I am about to do a valve job on this engine. Its in a 74 Duster, but I cant confirm that this is the original engine yet.
@markfortin421Ай бұрын
What about the early aluminum block cars. Did they use one of these heads, or did they have a special head, with possibly performance tweakings, or just standard heads from the cast-iron block. Thanks for opening a can of worms...I've always loved the slant 6.
@stogierun6978 Жыл бұрын
81-87 slant 6 Hydraulic Lifters and the Valve cover was different.
@leecrt967 Жыл бұрын
0:26 The 198 came out in 1970. It replaced the 170.
@raywilson16792 ай бұрын
after reading the comments,I noticed some people are not aware of what the tubes for the spark plugs are actually designed for.
@YoshimoshiGarage2 ай бұрын
The comments section of just about every video seems to be where some people have to prove they know more than me. They could just scroll on, or even make a video of their own but no, the comments of videos with a very small viewership is where they feel they can best shine. Good old Internet.
@normp3273 Жыл бұрын
Too bad there isn't a company that makes performance heads for these engines. Steve Dulcich burned through a few water jackets on a couple heads that he was porting for his slant six. I believe he was prepping that engine for the engine master show. He had a torque storm supercharger and ended up blowing a head gasket. I forget what the power numbers were but they were really decent.
@michaelware7294 Жыл бұрын
Great info
@kennethcohagen35393 ай бұрын
A friend took a set of spark plug tubes, got 2 more of them and used them as boot protectors to keep the headers away from the plug wires. I think that would work if the tubes were wrapped or the headers were wrapped along with the tubes. Anyone try that? By the way, back years ago some guys called the slant six a half Hemi. The slant of the block looked like half a V8, ( to those who have trouble counting), and the Hemi used spark plug tubes like the slant six to be able to put them in the middle of the valve cover.
@tommyreid23172 жыл бұрын
198 replaced the 170 in 1970.
@ppdntn111 ай бұрын
The 198 was made well after the 225. You already have shown your ignorance, why should anyone trust your supposed "knowledge".
@YoshimoshiGarage11 ай бұрын
Can you hear my eyes rolling? The amazing thing about KZbin is that if you don't like something, you can go watch something else. I probably care less about your opinion than you do of mine, so move along keyboard warrior.
@liberaltears6328 Жыл бұрын
What is the best slant 6 head. Cast number? I want to do a torque storm supercharger. Thank you
@YoshimoshiGarage Жыл бұрын
I'd follow Dutra's advice of 1968 or later heads. It's worth noting his torque storm build used a pre-75 head (it has spark plug cups), so I'd look for a 68 or 69 to 1974 head. www.slantsix.org/articles/combustion-chamber/sl6-combustion-chamber.htm