Charrlie_S
Well-Known Member
Any numbers at the drags?
My Leaning Tower
- Thread starter petty437
- Start date
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Slantsix64
Well-Known Member
I thought the same thing, that's for sure 7:9:1 compression ratio with the pistons that much in the hole. 325HP gonna need 10:1 or higher. I know a guy claiming his slant is over 300hp running that .440 lift compcams grind. I don't believe it for a second.
slantsixdan
=..=
325 horsepower is no.
225 horsepower is also probably no.
Pretty yellow engine is yes, though!
225 horsepower is also probably no.
Pretty yellow engine is yes, though!
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Pretty much what I was thinkin. lol I like the yeller too. Real nice job on that.
slantsixdan
=..=
Cool story, bro.
Charrlie_S
Well-Known Member
No slant came from the factory with dished pistons. Slants were rated 8.2-8.4 CR by the factory, but I have never seen one that even hit 8.0-1 when actually measured. Not trying to beat you up, but just pointing out some things. Maybe someone is misleading you.
PS: Just a FYI, I have lost count on how many slants I have build since 1974. I have 5 on engine stands, in various stages of build, at this time.
No one is raggin on your engine, man, so there's no need to get defensive or insulting. Unless your engine's pistons were not all the way to the top of the bore, that engine has at least .100" deck clearance. In other words, the pistons sit .100" down in the bore. Unless you're going to run an outside power adder such as forced induction or nitrous, you'll not get to 325 HP. Here's the deal there. The cylinder head on the slant six is the limiting factor. It was designed around the 170 and never redesigned around the 198 or the 225, so the larger engines got the 170 cylinder head. There's no amount of work you can do to a slant six head to achieve 325HP naturally aspirated and carbureted at your compression ratio level. You'd have to build a slant six so radical that it would not run on pump gas. A 13.5:1 225 bored .100 over with zero deck pistons and a totally ported head with huge valves and an equally huge camshaft MIGHT do it. Then again, it might not.
We're not raggin on your build I think it's nice. But if you've been told by someone that it's going to churn out 325HP, it ain't happenin. Also, "I seriously doubt" it has anywhere near 10.1 compression. Those pistons sit a LONG way in the hole at TDC. Even if the head's been milled so the combustion chamber is totally FLAT, you're not getting to 10.1, not happenin.
Now.......before you smart me off and ask me how many engines I've built, my answer is "I don't know" A damn LOT, I can tell you that. DO I know everything? Hell no I'm learning everyday, but I know what I've told you is correct. If you've paid for all you say someone has told you, my advice to you is to do your own research, measure your own compression. You'll find out the information you've been given is incorrect.
Again, we're not trying to rag on your build. I'm building a slant right now. We love them. We're trying to help you. The best thing to do is listen.
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Looks great,I may paint mine the same.
Of course since yellow add so much hp....maybe Caterpillar yellow.
Lmao
I really like the red though and it probably get better mpg and last longer.
Slantsix64
Well-Known Member
About two going on to my third,and I don't have people build my motors for me I do it myself and if it fucks up oh well At least I know and I learned from it. Factory compression lol was 7:9-8:1 at best. Stock slant six were were 90-100 horsepower at the wheel. No way your even at 200hp. Probably can't even chirp the tires lol. Who ever is telling you you got 325hp is blowing smoke up ur a$$.
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Not to be ragging on you, but I see you are a new member. There are over 51,000 members on this sight. I'm not one of them, but there are some on here that probably could be considered legends, and not in their own mind. Some like RRR and slantsixdan, are extremely knowledgeable, and are willing to share that with us who aren't. Showing your RoadRage, here, will not make you very many friends.
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Charrlie_S
Well-Known Member
Yep, sorry, I lost track of the original poster.
Easy to do sometimes. My apologies too.
As would several of us.
Roadrage came along and hi-jacked this topic and got it off track. And I'm sure that has scared off petty437 as well.
See what I said to Rusty!
Again, I think this topic has scared him off. That to bad as I was interested in this as well!
It's no wonder I don't post much on this site when I read & see so much crap like this here!
lilnoah
Supercharged slant six with 4 speed and 8.25
Here is something to consider.
Will do! Hopefully soon. Should be getting the car from the paint booth next week!
And @RustyRatRod You didn't scare me off. Just been out of town for the holiday watching cars go fast & turn left! 
valiantwagonguy
Well-Known Member
I always went with the Bill Hirsh engine enamel and added the DXR-80 hardener to give it that gloss and chemical resistant hardness. Engine Enamel Online | High Temp Engine Paint | Hirsch Auto-hirschauto.com
Sorry about the quality. I'm not very good at the pic posting!
Looks good to me!
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