RAMM
Well-Known Member
It will be 36-38+ on race gasoline---might be different on alcohol. Domes are inefficient usually-but in the quest for compression can be useful. J.Rob
Question about quench
- Thread starter pittsburghracer
- Start date
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It will be 36-38+ on race gasoline---might be different on alcohol. Domes are inefficient usually-but in the quest for compression can be useful. J.Rob
RAMM
Well-Known Member
.024" thats tight-I like it. I'll have one with you. J.Rob
MOPAROFFICIAL
Oogliboogli
For a short life or dyno motor.
That’s what happens when you go behind someone else. Customer had a short block, it just needed assembled.
Probably it was to be used with a open chamber head, and that guy sold it to this guy. He’s got closed chamber Indy ez heads, and I’m just the idiot that got stuck putting it together.
I’m talking to the Napa delivery guy who’s a ex excellent machinist. He was the main guy a couple super stock guys used for decades, He’s like that’s gonna be close, but one of the best engines I’ve seen run was close, I Like it!
It runs damn good, and has a nice pop to it.
sound like me
If i order from the midwest to east it take a day longer then if i order from the west. Either way it had to go to SLC Utah, too be sorted before it goes to Wy
That's why i usually order from Summit instead of Jegs. Summit is in Nevada and i get it a day sooner! Ahhhh...... that was before i had/we had a corona That's you can't drink or touch for that matter.
Let me say this ! quench is a good thing. 
Better to have it than not
Better to have it than not
yellow rose
Overnight Sensation
Jesus get over it. Build quench all you want. It doesn’t affect ignition timing. At all. Damn sensitive people. Post what you want. But don’t expect others to not read it and give their opinions. It’s not like a magazine article has never been wrong. Not.
This 408 is honestly the first engine I’ve even given it a second thought. I did add quench to my 572 nitrous engine because I was advised to because my head chambers weren’t “softened” for nitrous. I was told this will give me a bigger tuning window.
yellow rose
Overnight Sensation
I agree with that. If you can’t soften the chamber when you need to, then by all means close the quench down. I wasn’t talking power adder stuff though. I’d still rather soften the chambers as a first options.
BTW...did you see what Brett Miller did with that 45ish inch W8 engine???? Absolutely unreal numbers. And RPM. And you all know know I get off on RPM. And that thing gets it on.
Anyway, did you see the pictures of the heads??? Pretty soft chamber for an N/A build. Just impressive what he did. Over 2 HP/CID at over 450 inches. Impressive. On one frigging 4V.
I couldn’t afford even the short block on those builds. Those guys spend crazy money. What get me is NA they aren’t quick enough to run competitively in heads up classes. I just don’t get it because most of those guys are test n tuners. 5.20’s aren’t going to get you there.
Pretty sure you are getting the heads confused. The softened chamber are for an adder build.
Wyrmrider
Well-Known Member
spark plug location and chamber affect timing
open chamber is a lousey
open chamber bbm is worse
open chamber is a lousey
open chamber bbm is worse
yellow rose
Overnight Sensation
I call that a pretty soft chamber, especially N/A. Did you pull those off of yellowbullet?
Edit: let me see if that is the same chamber he used. I don’t care much for YB so I don’t go there often.
yellow rose
Overnight Sensation
That’s not the chamber he showed on YB. I’m ASSuming in the thread on YB he is showing the chamber he used, but I could be wrong.
Pictures I posted are from his Facebook group. I go on Yellowbullet but not everyday.
famous bob
mopar misfit
Well I did run one , for 14 yrs . . It had a very close ''quench'' , so close the side /tapered part of the pistons just touched the heads at 7000 rpm , steel rods of course .
I talked to Tom Hoover about it once , he said "just right !"
Stock my two hemi`s had about .060 , which was recommended for a street hemi , back then .
Once when playing w/ the timing at the dragstrip , I jacked it up to about 40 degress , it didnt like it , went back to 36--------jfyi
yellow rose
Overnight Sensation
Yeah, I caught that. The chambers on YB are pretty soft. LOL I don’t go to YB much either but my buddy sent me the link. He loves it over there.
That site changes to much. I liked it better 5 years ago. But there is a lot of good info on there if you stay out of the trash area. Not saying I don’t visit that area because it has some good stuff too. Lol.
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