Speculation. TFS 235's or Ported LS7's???
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I've tried searching and haven't really came up with a lot. I'm kicking around the idea of building a 416/18 starting the first of the year and am curious about what heads to go with. It will be a ls3 based stroker and I'm planning on going with a FAST 102 combo. I would really, really like to see 600 rwhp out of this combo through an auto, an FLT 4L60 to be exact. I'm not worried about driveability, i have faith in my tuner to do his best to tame the cam it will take to try and get those numbers.
Do you guys think a ported set of LS7 heads will get me there with that intake set up and the right cam, or is it going take TFS 235's or even the 245's?
Or am I just wishful thinking I can get 600+ through an auto?
Discuss.
Do you guys think a ported set of LS7 heads will get me there with that intake set up and the right cam, or is it going take TFS 235's or even the 245's?
Or am I just wishful thinking I can get 600+ through an auto?
Discuss.
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Have you looked into the new mastmotorsports LS3 12 Degrees Heads?
![](http://www.mastmotorsports.com/images08/photos/IMG_3538_cleaned.jpg)
http://www.mastmotorsports.com/black...20Heads&id=105
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http://www.mastmotorsports.com/black...20Heads&id=105
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Those cubic inches + an automatic = less than 600rwhp. it would take one radical setup to hit that mark. I'm almost done with my 454 with TFS245's, a M6, and a 9" with 4.11's and i'll be impressed if i clear 600 by very much.
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Thanks guys, looking for all the input I can. After having time to search today, i've decided to go with 235's, now to find someone to work them over once the ball is rolling. I know its a very tall order, we'll see how close I can get.
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I had the same question when I was building my LS7 based 427. I never had a good answer but it seemed like most were leaning towards the TFS 235s because of the higher torque. To be honest I still don't know the right answer. Seems like many on the forum act like getting 600 rwhp is easy with a 6 speed. To me that doesn't seem to be the case. My only dyno for the original tune wasn't even close, 534 in 95+ degree heat. I think my car would be higher now, how much is any ones guess. I've seen a lot of higher hp cars on the forum (per dynos) where track numbers don't seem to support the numbers. But then there seems to be a few cars that run amazingly well.
With the temps in the 50s, I've run a best of 10.70 at 132.74 (1.66 60') with a race weight of 3600-3650 and running stock front tires (street car setup). Seems like the corvettes run better at the same hp level.
From what I can tell, the LS7 setups are dynoing higher (mostly vettes) but I haven't seen enough track times to know if they run better.
With the temps in the 50s, I've run a best of 10.70 at 132.74 (1.66 60') with a race weight of 3600-3650 and running stock front tires (street car setup). Seems like the corvettes run better at the same hp level.
From what I can tell, the LS7 setups are dynoing higher (mostly vettes) but I haven't seen enough track times to know if they run better.
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TFS 235's from TEA will work, Victor Sr intake and Accufabe 4150/4500 TB.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
![](https://ls1tech.com/forums/signaturepics/sigpic210_1.gif)
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.