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Old 10-17-2019, 07:39 PM   #15
sixty9fordkiller
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you will need a horsecock cam!

not a donkey dick cam
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Old 10-17-2019, 07:57 PM   #16
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go to a different dyno LOL this whole dyno number comparison thing is a joke imo

Whats the spec on that stage 2? must be like a 229-238 ish? You need a bigger cam and to spin some rpm, heads if you need to.
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11.90@122.3, 0-60ft 2.0 / 11.99@123.6, 0-60ft 2.1 DA+819 ...Need a bigger cam and Slicks.
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Old 10-17-2019, 07:58 PM   #17
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Quote:
Originally Posted by sixty9fordkiller View Post
nope.


bigger cam (not an off the shelf cam either) that will require a much higher stall, raised compression, good head work (or after market heads) should get you there
Exactly. Milled heads not just ported, they'd be off anyway, no reason not to with NA
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Old 10-17-2019, 08:18 PM   #18
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Quote:
Originally Posted by WHAMMO View Post
go to a different dyno LOL this whole dyno number comparison thing is a joke imo

Whats the spec on that stage 2? must be like a 229-238 ish? You need a bigger cam and to spin some rpm, heads if you need to.
229/248 .629/.615 112 lobe and 109 center
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Old 10-17-2019, 08:19 PM   #19
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Originally Posted by Chris49066SS View Post
With your mods I would go with a GPI rod modded intake. Why I say that is:



o You don't have enough camshaft

o You don't have enough converter

o You DD and never race it



Speaking from experience, I have the LOD, and while my car is still satisfying to drive on the street because of the overall combo, your car isn't going to benefit from this type of manifold unless you are prepared to invest in some valvetrain upgrades to turn higher RPMs, and accept the fact that the intake expects your powerband to be way higher now. I did this mod with a Procharged setup in the future as a goal, but NA with no desire to race it? I really wouldn't recommend it for your application. I think you'd be much happier with a rod mod. Only my opinion.
Ok gotcha. Thanks
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Old 10-17-2019, 08:20 PM   #20
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Ok so probably won't hit the number NA. I think I'll just do the heads and call it a day. Hopefully hit the 450 number.
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Old 10-17-2019, 09:44 PM   #21
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Depends on how happy the dyno is bud. Heads and big cam LS3 can get it easier than L99. Just depends on the dyno.
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Old 10-18-2019, 03:07 PM   #22
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Originally Posted by havelegs View Post
Also considering the LOD intake
On the whole, a ported and radius rodded LS3 intake may be a better choice.

Understand.....500 peak hp is a nice goal, but certain mods that'll get you there may not be best suited to your needs.

LOD intakes trade out low RPM torque for high RPM HP. So unless you're only concerned with engine performance ABOVE 4500 RPMs......you might want to pass on the LOD.

Quote:
Originally Posted by Chris49066SS View Post
With your mods I would go with a GPI rod modded intake. Why I say that is:

o You don't have enough camshaft
o You don't have enough converter
o You DD and never race it.....
Exactly!


Quote:
Originally Posted by havelegs View Post
Ok so probably won't hit the number NA. I think I'll just do the heads and call it a day. Hopefully hit the 450 number.
With the cam specs you posted, you'll to bump up your compression ratio to about 11.3:1.....

Have your heads milled, and mate them with head gaskets with a .040" compressed thickness.

If you have headers in your budget, some 1 7/8" long-tubes would be a good way to go.

And then finish it all out with a good tune!!

KW
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Old 10-19-2019, 10:10 AM   #23
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You should just go with the GPI max package and call it a day with a good converter IMO.... Milling heads increase the lack of PTV clearance for a big cam, and basically reduces the life especially of aluminum heads should they need a shave in the future from pitting...…….. SO milling may just shoot yourself in the foot for little gain as the small amount of gain from increased compression will net you not much. Now the loss due to being a automatic can be helped some with the right converter and you have to ask about that from a competent shop; IE: 20% loss automatic 15% Manual.....

I did my first build using a TSP cam on my 13 with a 235/239 cam and .639/.623 and 112 LSA, with just a Cold Air Inductions intake and 1 7/8 Stainless power headers with HFC tuned right I got 491 RWHP and 448 rwtq …..on a mustang dyno, now subtract 5% for a l99 …..due to the slush box.... Your realistically going to have to have a lot more cam and then better heads will help when needing it, other than that your doing a port and mill may net you damn little as has been shown if not done right you most likely won't with a mild cam feed more fuel and air needed for more power because you simply don't need it with the cam your using....IMO And as always talk is cheap..... GO look at the small bore ls7 heads GPI has and their aggressive cam and their results from old posts on here where it was first shown is what I would do. Good Luck.

here ya go.... https://gwatneyperformance.com/produ...d-cam-package/
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Old 10-19-2019, 02:54 PM   #24
havelegs

 
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Quote:
Originally Posted by KW Baraka View Post
On the whole, a ported and radius rodded LS3 intake may be a better choice.

Understand.....500 peak hp is a nice goal, but certain mods that'll get you there may not be best suited to your needs.

LOD intakes trade out low RPM torque for high RPM HP. So unless you're only concerned with engine performance ABOVE 4500 RPMs......you might want to pass on the LOD.



Exactly!




With the cam specs you posted, you'll to bump up your compression ratio to about 11.3:1.....

Have your heads milled, and mate them with head gaskets with a .040" compressed thickness.

If you have headers in your budget, some 1 7/8" long-tubes would be a good way to go.

And then finish it all out with a good tune!!

KW
Thanks for the info.
Quote:
Originally Posted by christianchevell View Post
You should just go with the GPI max package and call it a day with a good converter IMO.... Milling heads increase the lack of PTV clearance for a big cam, and basically reduces the life especially of aluminum heads should they need a shave in the future from pitting...…….. SO milling may just shoot yourself in the foot for little gain as the small amount of gain from increased compression will net you not much. Now the loss due to being a automatic can be helped some with the right converter and you have to ask about that from a competent shop; IE: 20% loss automatic 15% Manual.....

I did my first build using a TSP cam on my 13 with a 235/239 cam and .639/.623 and 112 LSA, with just a Cold Air Inductions intake and 1 7/8 Stainless power headers with HFC tuned right I got 491 RWHP and 448 rwtq …..on a mustang dyno, now subtract 5% for a l99 …..due to the slush box.... Your realistically going to have to have a lot more cam and then better heads will help when needing it, other than that your doing a port and mill may net you damn little as has been shown if not done right you most likely won't with a mild cam feed more fuel and air needed for more power because you simply don't need it with the cam your using....IMO And as always talk is cheap..... GO look at the small bore ls7 heads GPI has and their aggressive cam and their results from old posts on here where it was first shown is what I would do. Good Luck.

here ya go.... https://gwatneyperformance.com/produ...d-cam-package/
Thanks. I did look at that package a while ago, should have just done it then. What TC stall would be needed for that package?
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Old 10-19-2019, 10:27 PM   #25
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Originally Posted by havelegs View Post
Thanks for the info. Thanks. I did look at that package a while ago, should have just done it then. What TC stall would be needed for that package?
I'm sure GPI can help you with your stall choice if you go that route. I personally run a 4k stall with mine and believe that's what they recommended along with 3:91 gears.
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Old 10-20-2019, 08:26 AM   #26
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Originally Posted by Tajefe Couple View Post
I'm sure GPI can help you with your stall choice if you go that route. I personally run a 4k stall with mine and believe that's what they recommended along with 3:91 gears.
Thanks
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Old 10-21-2019, 11:50 AM   #27
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Originally Posted by christianchevell View Post
…...Milling heads increase the lack of PTV clearance for a big cam......
Not really.....when the valves open and close is about 98% of PTV clearance issues.

So milled heads and high lift are rarely an issue.
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Old 10-21-2019, 11:59 AM   #28
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My daily driven, 1995 Impala with LS3 conversion averaged 495hp and 441tq to the wheels on two different dynos.

TSP 260 heads....stock heads peaked almost the same HP, but with less HP/TQ from 2000-6000 RPMs
Lingenfelter GT1-1 Cam = 229*/242*, 114* = 0* LSA, .631"/631' lift
GPI ported/radius rodded intake
90mm, V-max Throttle-body
1 7/8" long tube headers
2 1/2" exhaust with performance cats
4L60e Transmission
3200 stall Circle-D converter.

Personally, I wouldn't go any higher on the stall on a daily driver.

KW
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