Everyone please post torque @ 3000-4000
Originally Posted by BrentB@TEA
I just want honest figure here. So the numbers are what I asked for. We are going to be doing some engine dyno testing soon so I think we will be able to tell the difference in a same cam,heads and intake shootout soon. Thanks for the results folks keep them coming.
TECH Senior Member
Joined: Nov 2001
Posts: 10,341
Likes: 1
There is so much more to consider. Boltons used, programming, octane, compression, gearing (skews dyno readings) CAM CHOICE, Wheel/tire combo, weather.
Engine dyno testing with specific cams would help a lot in removing variabilty imo.
Throw in a 224/224 114LSA cam then swap heads and tune each head combo. Very precise...
Then repeat for a different spec cam etc
That is the only way to really have a decent comparision
Engine dyno testing with specific cams would help a lot in removing variabilty imo.
Throw in a 224/224 114LSA cam then swap heads and tune each head combo. Very precise...
Then repeat for a different spec cam etc
That is the only way to really have a decent comparision
I just have bowl work and 2.02 valves on the intake ( small *** runners) and stock exh. valves but good porting (219 cfm@.600)
3000=340tq
3500=370
3800=400
4000=400
4200=400
4500=400
4800=405
5000=405
this is with the f 13 112+4 with a ls6 intake and ported t/b through Mac headers and oryp. Very nice tq curve, great throttle response but I give up a good bit up top from heads only flowing 257@.600 on the intake side.
3000=340tq
3500=370
3800=400
4000=400
4200=400
4500=400
4800=405
5000=405
this is with the f 13 112+4 with a ls6 intake and ported t/b through Mac headers and oryp. Very nice tq curve, great throttle response but I give up a good bit up top from heads only flowing 257@.600 on the intake side.
Thread Starter
TECH Enthusiast
Joined: Dec 2004
Posts: 576
Likes: 0
From: Chattanooga
Originally Posted by critter
I know you have a theory that big ports don't hurt "midrange" torque. That is what I meant. The numbers so far seem to disprove it. But in the end, your own dyno testing will be a much better measure than random results here.
We will be testing many cam configurations so it should give us a good idea of what is going on.
Originally Posted by critter
This intrigued me, so I did a bit of data reduction. I don't think the result is quite what TEA wanted ...
Ignoring the stock head posts, I find these averages (if more than one result, singletons otherwise):
3000 3500 4000
350 - 368 - 394 - AFR 205s
347 - 374 - 389 - Absolute Speed
352 - 361 - 370 - Patriot Performance
342 - 357 - 366 - SLP
340 - 345 - 377 - MTI
318 - 356 - 371 - TEA
325 - 350 - 365 - JPR
So, the small port AFR heads seem to be the torque kings in the range TEA wanted to examine, with Absolute a close second. The big surprise is Patriot, who comes in third and seems to be the best at 3000. Strangely, TEA is the worst at 3000.
Remember that figures lie and liars figure, so take this with a grain or two of salt
Ignoring the stock head posts, I find these averages (if more than one result, singletons otherwise):
3000 3500 4000
350 - 368 - 394 - AFR 205s
347 - 374 - 389 - Absolute Speed
352 - 361 - 370 - Patriot Performance
342 - 357 - 366 - SLP
340 - 345 - 377 - MTI
318 - 356 - 371 - TEA
325 - 350 - 365 - JPR
So, the small port AFR heads seem to be the torque kings in the range TEA wanted to examine, with Absolute a close second. The big surprise is Patriot, who comes in third and seems to be the best at 3000. Strangely, TEA is the worst at 3000.
Remember that figures lie and liars figure, so take this with a grain or two of salt
3000- 365
3500- 373
4000- 380
Note a couple things: How bad the heads work above 4500 rpm, and how well a good Y-pipe design makes.
As far as what my numbers show... is that there are too many variables in this "study". And it reminds me how bad my heads are.
Thank God I have a set of TEA stage 3 LQ9 heads on order to go on a 388.
On a seperate and trivial note, on the 388, the POS ARE heads did:
3000- 375
3500- 395
4000- 415
(and only peaked at 438 rwhp, 425 rwtq)
With a 230/228 MTI X1 on a 114.
Im hoping for 460+ rwhp with the smaller ported TEA stage 3s.
PP LS6 style heads, 231/237 cam, full bolt on M6
3000 320
3500 350
4000 375
Stock 241 heads, TR220/114 cam, most bolt on M6
2000 300
2500 305
3000 330
3500 350
4000 370
Stock internal and a few bolt ons
2500 320
3000 330
3500 335
4000 350
Bone stock 2001 T/A M6 at 1,800 miles
2500 300
3000 305
3500 310
4000 325
3000 320
3500 350
4000 375
Stock 241 heads, TR220/114 cam, most bolt on M6
2000 300
2500 305
3000 330
3500 350
4000 370
Stock internal and a few bolt ons
2500 320
3000 330
3500 335
4000 350
Bone stock 2001 T/A M6 at 1,800 miles
2500 300
3000 305
3500 310
4000 325
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370 lbs.@ 3000
380 lbs.@ 3500
400 lbs.@ 4000
Went from 340 lbs. @ 2600, to 400 lbs. @ 3900, and peaked at 423.9 @ 4600 before falling slowly to 350 @ 6900.
Cylinder head:
TEA S1.5 5.3L (2 years old)
Cam used:
FMS F11 (228/230, 585/595 112 + 3*)
.... on a 90/90 through a 12 bolt/4.56's and 28" ET Streets w/all supporting bolt on's.
380 lbs.@ 3500
400 lbs.@ 4000
Went from 340 lbs. @ 2600, to 400 lbs. @ 3900, and peaked at 423.9 @ 4600 before falling slowly to 350 @ 6900.
Cylinder head:
TEA S1.5 5.3L (2 years old)
Cam used:
FMS F11 (228/230, 585/595 112 + 3*)
.... on a 90/90 through a 12 bolt/4.56's and 28" ET Streets w/all supporting bolt on's.
350rwtq at 3,000 rpm
375rwtq at 3,500 rpm
400rwtq at 4,000 rpm
436rwtq peak at 4800
AFR 205s with .030" mill. Stock displacement.
375rwtq at 3,500 rpm
400rwtq at 4,000 rpm
436rwtq peak at 4800
AFR 205s with .030" mill. Stock displacement.
__________________
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.
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.
Teching In
Joined: Sep 2005
Posts: 25
Likes: 0
From: Central North Carolina
C5R blcok 427.6 cubic inches, PatIII heads with custom porting, 10.25:1 c.r., Crower custom cam 236/244/113@.594 lift, FASt 90mm, Kooks 1 7/8, , full cats, GHL exhaust, Procharger D1Sc currently making only 4.5 lbs boost.
RWTorque, tested at Carolina Auto Masters (Jeff Creech) Durham, NC
RPM Cutouts open, cutouts closed
2000 435 420
2500 470 450
3000 485 465
3500 495 475
4000 520 505
4500 550 525
5000 555 525
5500 540 510
6000 520 490
6500 460 425
Car is a 02 Z06 M6 with stock 3.42 rear end ratio
RWTorque, tested at Carolina Auto Masters (Jeff Creech) Durham, NC
RPM Cutouts open, cutouts closed
2000 435 420
2500 470 450
3000 485 465
3500 495 475
4000 520 505
4500 550 525
5000 555 525
5500 540 510
6000 520 490
6500 460 425
Car is a 02 Z06 M6 with stock 3.42 rear end ratio
Last edited by Rhino21149; Oct 17, 2005 at 07:37 AM. Reason: addition
