Ported L92 heads v. AFR 225
04-13-2007, 09:03 AM
#2
So many variables:
Will they run the same compression?
Which intake will you run on the AFRs? LS6, FAST 90? Ported FAST 90? Single plane? Sheet metal?
Define performance. Are you talking street manners, pump gas street strip, or all-out race?
The cathedral port head will be easier to cam. The L92s can make excellent power, but the numbers are all over the board because not everybody has nailed the cam combination. The AFRs will make strong power with almost any cam.
Going purely off of flow numbers, the L92 heads flow more, but dyno and track performance have not always shown the advantage. Give the L92s more time and you should start seeing more consistently high numbers.
Will they run the same compression?
Which intake will you run on the AFRs? LS6, FAST 90? Ported FAST 90? Single plane? Sheet metal?
Define performance. Are you talking street manners, pump gas street strip, or all-out race?
The cathedral port head will be easier to cam. The L92s can make excellent power, but the numbers are all over the board because not everybody has nailed the cam combination. The AFRs will make strong power with almost any cam.
Going purely off of flow numbers, the L92 heads flow more, but dyno and track performance have not always shown the advantage. Give the L92s more time and you should start seeing more consistently high numbers.
__________________
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
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
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
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
04-14-2007, 10:34 AM
#4
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Patrick G,
Thanks for you response. It was a hypothetical question. The Katech "value 427" is an attractive deal. If I got a 427, I would be interested in a cam that could pass smog in California and would be good for the street and road racing. I would also like to know which intake would be best for this application, the L76 or the LS7. Thanks.
Thanks for you response. It was a hypothetical question. The Katech "value 427" is an attractive deal. If I got a 427, I would be interested in a cam that could pass smog in California and would be good for the street and road racing. I would also like to know which intake would be best for this application, the L76 or the LS7. Thanks.
04-14-2007, 02:05 PM
#7
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Just to add another option you could look at ETP LS7 heads. Those heads can be used with a LS7 intake which outflows the fast 90. On a 427 ETP LS7 heads with a LS7 intake would be a killer setup IMO. The heads are more expensive but the LS7 intake is cheap so that helps justify the extra bucks spent on the heads. Get a custom grind cam and you'll be flying 
After tons of searches and a half dozen phone calls I decided to go this route for my 416. Cary @ ETP assured me that this setup will outflow any 225 heads & fast 90 combo out there. Of course he's a little biased
But New Era Performance was agreeing with him and that was good enough for me
Good luck.
After tons of searches and a half dozen phone calls I decided to go this route for my 416. Cary @ ETP assured me that this setup will outflow any 225 heads & fast 90 combo out there. Of course he's a little biased
But New Era Performance was agreeing with him and that was good enough for me
Good luck.
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04-14-2007, 02:11 PM
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Originally Posted by darrensls1
Just to add another option you could look at ETP LS7 heads. Those heads can be used with a LS7 intake which outflows the fast 90. On a 427 ETP LS7 heads with a LS7 intake would be a killer setup IMO. The heads are more expensive but the LS7 intake is cheap so that helps justify the extra bucks spent on the heads. Get a custom grind cam and you'll be flying
After tons of searches and a half dozen phone calls I decided to go this route for my 416. Cary @ ETP assured me that this setup will outflow any 225 heads & fast 90 combo out there. Of course he's a little biased
But New Era Performance was agreeing with him and that was good enough for me
Good luck.
After tons of searches and a half dozen phone calls I decided to go this route for my 416. Cary @ ETP assured me that this setup will outflow any 225 heads & fast 90 combo out there. Of course he's a little biased
But New Era Performance was agreeing with him and that was good enough for me
Good luck.
04-14-2007, 02:21 PM
#9
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Originally Posted by osuqsz06
i had thought about goin this route on my 416 but ended up goin w/ the tfs 225's. please keep us updated on your results.!!
04-17-2007, 06:54 AM
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Originally Posted by darrensls1
Just to add another option you could look at ETP LS7 heads. Those heads can be used with a LS7 intake which outflows the fast 90. On a 427 ETP LS7 heads with a LS7 intake would be a killer setup IMO. The heads are more expensive but the LS7 intake is cheap so that helps justify the extra bucks spent on the heads. Get a custom grind cam and you'll be flying
After tons of searches and a half dozen phone calls I decided to go this route for my 416. Cary @ ETP assured me that this setup will outflow any 225 heads & fast 90 combo out there. Of course he's a little biased
But New Era Performance was agreeing with him and that was good enough for me
Good luck.
After tons of searches and a half dozen phone calls I decided to go this route for my 416. Cary @ ETP assured me that this setup will outflow any 225 heads & fast 90 combo out there. Of course he's a little biased
But New Era Performance was agreeing with him and that was good enough for me
Good luck.
Cary,builds performance and experiments with it .
I have never heard any negative comments about another product
Et performance is a solid company ,with high performance products and accuracy in reporting Horse power and flow in the products they produce.
John
04-17-2007, 11:11 AM
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Originally Posted by darrensls1
Just to add another option you could look at ETP LS7 heads. Those heads can be used with a LS7 intake which outflows the fast 90. On a 427 ETP LS7 heads with a LS7 intake would be a killer setup IMO. The heads are more expensive but the LS7 intake is cheap so that helps justify the extra bucks spent on the heads. Get a custom grind cam and you'll be flying
After tons of searches and a half dozen phone calls I decided to go this route for my 416. Cary @ ETP assured me that this setup will outflow any 225 heads & fast 90 combo out there. Of course he's a little biased
But New Era Performance was agreeing with him and that was good enough for me
Good luck.
After tons of searches and a half dozen phone calls I decided to go this route for my 416. Cary @ ETP assured me that this setup will outflow any 225 heads & fast 90 combo out there. Of course he's a little biased
But New Era Performance was agreeing with him and that was good enough for me
Good luck.
04-17-2007, 01:00 PM
#13
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Originally Posted by cybernco
The ETP LS7 heads & LS7 intake on a 416 sounds great!!! Please let us know how it turns out. Be sure to have a dyno done after you break in the engine. This may really be an excellant combo. Hey, what cam profile are you looking at?
After a few seasons I'll probably up the cam size, lose the plates and haul her to the track as a trailer queen.
