L92 416 build suggestions
L92 416 build suggestions I'm looking into building a L92 416 stroker engine, I've been researching the engine and I'd like it to make over 600HP at the crank with a street-able cam and possibly a set of cnc'd LS3 heads or AFR heads, FAST 102 Intake, 1 7/8' LT headers. I really don't have a budget in mind, but I'm figuring it would take a minimum of $7k to $8k. I've been looking at and considering shortblocks on TMS's site or finding one in a junk yard. I could either put the engine in my T/A or save it for another vehicle like a C5 or C6 vette. Let me know what steps you guys think I should take.
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Joined: Aug 2009
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From: Coast of San Mateo County Between Pacifica & HMB
I would do AFR LS3s out of the box for what you want.
Best bang for the buck LS3 Heads IMO, better results
With smaller cam much more daily driver friendly.
AFR LS3 Heads from Summit come with relatively heavy valves
(As do TFS LS3s) but with a 6500 RPM limit and a mild
Cam Motion Cam something like 235/243 114+3 .620"/.600,
Stock intake Ported with "Rod Mod" will make 600+Crank HP W/ 11.0:1
Comp easily and be a very friendly daily driver.
Good friend of mine using these heads for a strip only 416"
with lighter valves and
Large LLSR, 13.0:1 W/E85 with Holley Hi Ram will make
620+ RWHP with Powerglide & 8.8" , well over 700 @ the Crank.
Good Luck
Best bang for the buck LS3 Heads IMO, better results
With smaller cam much more daily driver friendly.
AFR LS3 Heads from Summit come with relatively heavy valves
(As do TFS LS3s) but with a 6500 RPM limit and a mild
Cam Motion Cam something like 235/243 114+3 .620"/.600,
Stock intake Ported with "Rod Mod" will make 600+Crank HP W/ 11.0:1
Comp easily and be a very friendly daily driver.
Good friend of mine using these heads for a strip only 416"
with lighter valves and
Large LLSR, 13.0:1 W/E85 with Holley Hi Ram will make
620+ RWHP with Powerglide & 8.8" , well over 700 @ the Crank.
Good Luck
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Joined: Feb 2008
Posts: 300
Likes: 18
Our cylinder heads have the rolled valve angle and it's worth a lot of power. Our flow numbers have been bench-marked and matched by others, but we achieve ours with
5cc smaller runners for better velocity. Let me know if you have any questions.
5cc smaller runners for better velocity. Let me know if you have any questions.
__________________
TECH Fanatic
Joined: Aug 2009
Posts: 1,845
Likes: 255
From: Coast of San Mateo County Between Pacifica & HMB
TECH Fanatic
Joined: Aug 2009
Posts: 1,845
Likes: 255
From: Coast of San Mateo County Between Pacifica & HMB
The TFS, CFM/CC even accounting for the 5CC difference.
I used MAMOFIED TFS LS3s for my build, Extremely Happy with
Them and my results.
"Time marches on"
The TFS LS3 was the
Benchmark/Bogey for the AFR LS3!
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Posts: 300
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Verdad Gallardo Thanks for the advice, so as far as building the block VS buying a completed one expense wise what might be best and what are the pro and cons? When I rebuilt my LS1 I realized I could've purchased a new LS2 short block for the same price or less from what I remember and I would have ALOT more horses for the same money.
Thanks I'll be in contact soon!
IMO, to get exactly what you want, buy a complete short-block and then get the heads/valve-train/cam of your choice.
KW
416 with 600 crankshaft HP would be easy enough IMO. The TFS 255 or AFR 260 would be ideal if it's in the budget but a set of mildly ported LS3 heads, a smaller shelf cam with an LS3 OEM intake could get that 600 done. A nice set of lighter (less than 450grm) flat tops, a good set of I beam rods (less than 625grm) makes the balancing easier and less costly. Or, you could just reach out to one of the site sponsors for a completed shortblock and not have to deal with any of it. Think 550 rwhp on pump gas, that would not be very difficult with a 416 and surpasses 600 flywheel by a lot.
I'm undecided how I want to source the short block. I kind of want a project actually, if I found a good block to use would the machining and parts come to what a already finished block would cost? I'm willing to spend some money on the heads.
TECH Fanatic
Joined: Aug 2009
Posts: 1,845
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From: Coast of San Mateo County Between Pacifica & HMB
If you have the time and the space I applaud you building your own
Engine especially since you have done it before. 64 Post has sourced
Every part for his 416" build to commence shortly and can give you
#s and experience I would PM him. Either the AFR or TFS LS3
Heads would provide enough airflow for 600 Crank HP with
Mellow cams for ~$2500.00 through Summit. The MAST Heads would
Be $3000.00 minimum. Starting with a premium Head allows room
For growth down the road, but more importantly more CFM through
Smaller Ports which allows better performance with a smaller cam
Giving a better all around driving experience with fewer/no compromises.
Engine especially since you have done it before. 64 Post has sourced
Every part for his 416" build to commence shortly and can give you
#s and experience I would PM him. Either the AFR or TFS LS3
Heads would provide enough airflow for 600 Crank HP with
Mellow cams for ~$2500.00 through Summit. The MAST Heads would
Be $3000.00 minimum. Starting with a premium Head allows room
For growth down the road, but more importantly more CFM through
Smaller Ports which allows better performance with a smaller cam
Giving a better all around driving experience with fewer/no compromises.
If you have the time and the space I applaud you building your own
Engine especially since you have done it before. 64 Post has sourced
Every part for his 416" build to commence shortly and can give you
#s and experience I would PM him. Either the AFR or TFS LS3
Heads would provide enough airflow for 600 Crank HP with
Mellow cams for ~$2500.00 through Summit. The MAST Heads would
Be $3000.00 minimum. Starting with a premium Head allows room
For growth down the road, but more importantly more CFM through
Smaller Ports which allows better performance with a smaller cam
Giving a better all around driving experience with fewer/no compromises.
Engine especially since you have done it before. 64 Post has sourced
Every part for his 416" build to commence shortly and can give you
#s and experience I would PM him. Either the AFR or TFS LS3
Heads would provide enough airflow for 600 Crank HP with
Mellow cams for ~$2500.00 through Summit. The MAST Heads would
Be $3000.00 minimum. Starting with a premium Head allows room
For growth down the road, but more importantly more CFM through
Smaller Ports which allows better performance with a smaller cam
Giving a better all around driving experience with fewer/no compromises.
Yes, you'll get a different satisfaction that just can't be defined by doing it all yourself, I'm building a 416 right now (getting ready to assemble) after over a year of parts collection, most of it in the past few months and it's work researching and deciding what to use. I leaned on more than a few for detailed info, like Steve at CamMotion (SpeedTigger) Dustin Lee at DLRE, Tony Mamo, Nick at BTR and hours and hours of dialogue with Dan (Navy Blue)
Yes, you'll get a different satisfaction that just can't be defined by doing it all yourself, I'm building a 416 right now (getting ready to assemble) after over a year of parts collection, most of it in the past few months and it's work researching and deciding what to use. I leaned on more than a few for detailed info, like Steve at CamMotion (SpeedTigger) Dustin Lee at DLRE, Tony Mamo, Nick at BTR and hours and hours of dialogue with Dan (Navy Blue)
http://www.karlperformanceparts.com/...8i0ccBDzoaAsJ3
http://www.ebay.com/itm/Chevrolet-Pe...ao%3D1%26asc%3
Last edited by 64post; Jul 27, 2017 at 08:55 AM.
My recommendation......as a start:
https://www.texas-speed.com/p-295-ts...ort-block.aspx
https://www.summitracing.com/parts/tfs-3261t002-c01 x2
https://www.texas-speed.com/p-190-co...4140-bore.aspx
https://www.summitracing.com/parts/nal-12499225
Your choice of OEM style rocker arms.
Your choice of cam and timing set.
Your choice of intake manifold, fuel rail and injectors.
Your choice of throttle body.
Best of luck!
KW
https://www.texas-speed.com/p-295-ts...ort-block.aspx
https://www.summitracing.com/parts/tfs-3261t002-c01 x2
https://www.texas-speed.com/p-190-co...4140-bore.aspx
https://www.summitracing.com/parts/nal-12499225
Your choice of OEM style rocker arms.
Your choice of cam and timing set.
Your choice of intake manifold, fuel rail and injectors.
Your choice of throttle body.
Best of luck!
KW