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6.0L 372C.I. Iron Block N/A Power.....??

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Old 10-27-2003, 03:16 PM
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Default 6.0L 372C.I. Iron Block N/A Power.....??

My current motor in my car is a 6.0L Iron block....the compression w/the TEA 73cc heads I have on the car now is 9:1

These TEA heads lower the compression to around 9.3:1 on a stock motor...

Now if this supercharger issue I have doesn't work then I'm considering maybe turning the motor into a stout N/A setup...

If you look in my webshots page you can see the shortblock of the 6.0L and the pistons, I have some room to play w/there, so I could run a LARGE cam...

I would probably go with some milled stage 2 heads from a vendor....to raise the compression.....

What kind of power would this motor put out w/a large cam and some good s2 or s3 heads...

I have 42.5LB injectors in it now, would these be worth keeping if I decide to spray it?

200 direct port?


-Still praying that I see 12psi with my supercharger, then this idea will go out the window for a while....
Old 10-27-2003, 04:18 PM
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Bos....check out my post about my dyno back on Saturday. My motor is stock 4-inch bore with unmilled 5.3 heads from Absolute. The numbers are a little liw due to setup, but you can easily get into the 10s on motor and 9s on gas.
Old 10-27-2003, 04:56 PM
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I'd get a set of stage II/III LS6 or 6.0 heads from a reputable source and with the money you make off of selling your blower I'd turn it into a solid roller with a sizeable cam in the 240-250 range and .650 lift or so. Then since you have a forged bottom end and iron block I'd spray a 250 DP shot on top.

If your car was a M6 I bet it would dyno in the 480ish RWHP range NA. You'd definately be in the 9's for sure on the spray.
Old 10-27-2003, 05:49 PM
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Yea, I was thinking about staying hydraulic roller, maybe 240/250 .610/.620 112lsa

I would probably go with TEA Stage 2 or 3 LS6 heads....

And probably run the 200-250 direct port on top of that....

I know that would put me high to mid 9's for sure, and I got the fuel for it, would defiently upgrade to twin 340's in the tank...with the blower I doubt I will get into the 9's unless I go over 15psi....shooting for 12 now....
Old 10-27-2003, 07:01 PM
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and how long ago did i suggest going thisroute?????

i think this would be a very good way to get your self in the 9s if that is what u are shooting for. plus with the extra money left over you could do all the front susp and a cage like u have been talking about. May want to reconsider the flps if you do go this route. get a set of 1 7/8 kooks or something.
Old 10-27-2003, 10:37 PM
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No, the FLP's will be good, I will get them recoated and call it even....

The car will boogie if I go N/A.....and then when I go spray on top of it...
Old 10-27-2003, 10:41 PM
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[QUOTE=BIGBOS]Yea, I was thinking about staying hydraulic roller, maybe 240/250 .610/.620 112lsa

I would probably go with TEA Stage 2 or 3 LS6 heads....

And probably run the 200-250 direct port on top of that....
[QUOTE]

Yeah but "372 Solid Roller" has a nice ring to it.... Adjusting the lash isn't that big of a deal really and you could run a real monster cam that idles better than the hydraulic and also spin it up really high. A 240-250 hydraulic cam would be a pretty lumpy idle in a 372 so I'd definately get your compression up there to 11-11.5.

Personally I wouldn't go with TEA heads unless they were the new Judson heads. As a hydraulic roller it would still make very good power and work well with a nice DP shot. I'd certainly be contemplating this considering all the trouble you've had with that Procharger.
Old 10-27-2003, 10:45 PM
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Yea I know, what heads would you suggest, I don't want to spend too much money, I was thinking about spending the extra money I would save on K-member, but I would rather make power...

I had some MTI S2's before that I sold....
Old 10-27-2003, 11:05 PM
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Would it be worth upgrading to some 1.7 rockers too?
Old 10-27-2003, 11:57 PM
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You mean 1.75 or 1.8?
Old 10-27-2003, 11:59 PM
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yea, which one would be better, I'm not even really looking to rev that high, could I stick with the standard ratio?
Old 10-28-2003, 12:09 AM
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If you're going with a high lift cam you'd be better off with stock ratio.. As far as cams go, I'm totally happy with my TSP 228R cam in my Stock LQ9 6.0 H.O..
Old 10-28-2003, 12:16 AM
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Originally Posted by BIGBOS
Yea I know, what heads would you suggest, I don't want to spend too much money, I was thinking about spending the extra money I would save on K-member, but I would rather make power...

I had some MTI S2's before that I sold....
Well, the TEA Judson heads I was speaking of are 6.0 heads that are CNC'd from a set that Judson Masengill of SAM, so I'm sure they are nice.

Personally I'd go with Jay at Absolute for quality at a good price. I have a set of his LS6 heads and they are top notch - besides his customer service is outstanding. That's just MO though so take it for what it's worth.

Others that I'm sure would be good (probably more expensive however) are GTP, JPR, Cartek.... for a really good price you might think about the Patriot LS6 style heads as well. Maybe by the time you're ready to buy the new AFR heads may even be out. Either way I'd get the best heads you can afford either LS6 or 6.0 with 11:1 compression or more and a nice set of beefy double springs. Coupled with a large cam to match the heads your motor would make very nice power I think.

BTW, I'd definately keep the stock ratio rockers. If your staying hydraulic I'd just get a set of Yella Terra's.
Old 10-28-2003, 12:26 AM
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Yea, I'm defiently going to stay hydraulic..

How much did the Absolute LS6 heads cost...what do the Judson TEA 6.0L heads go for?
Old 10-28-2003, 12:51 AM
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Also, another ?, will my stock crank be able to handle consecutive 200+ DP shots?
Old 10-28-2003, 06:44 AM
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I would have to echo the recommendation for Jay at Absolute. Good prices and excellent work!
Old 10-28-2003, 09:23 AM
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Originally Posted by BIGBOS
How much did the Absolute LS6 heads cost...what do the Judson TEA 6.0L heads go for?
I got my AS heads a year ago, so I'm not sure what the pricing would be. It's probably just best to call TEA and AS and talk to them about the heads in question to get pricing.


Originally Posted by BIGBOS
Also, another ?, will my stock crank be able to handle consecutive 200+ DP shots?
Yeah, should be no problem. I've never heard of a stock crank breaking yet, they are pretty stout. You've already got the weak points taken care of so you should be fine. Several guys are spraying 250-300 on the stock crank with no problems so far.
Old 10-28-2003, 12:34 PM
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I talked to TEA, its 2000 bucks for the Judson heads with the stock LS1 stems....$2400 for the upgrade to where I would need to run a yella terra....

Are these judsons better than the TEA S2 5.3L head?
Old 10-28-2003, 01:20 PM
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Originally Posted by BIGBOS
I talked to TEA, its 2000 bucks for the Judson heads with the stock LS1 stems....$2400 for the upgrade to where I would need to run a yella terra....

Are these judsons better than the TEA S2 5.3L head?
Oh you're d*mn straight they are. You should check out the flow #'s in the other thread. They flow like 332CFM at .600 and are good throughout the range. They would make a lot of power with a big cam that will take advantage of how well they flow. Besides that they are 6.0 heads - which have runners similar to the LS6 head. Both the LS6 and 6.0 heads flow better stock than 5.3's.

I thought the Yella Terra's were a direct replacement part? Are you sure they didn't quote you a setup for adjustable rockers or something?
Old 10-28-2003, 01:22 PM
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Defiently looks like I will be going with those then if I decide to sell the blower...



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