07-12-2019, 10:03 AM | #15 |
Drives: 2010 SS L99 Join Date: Sep 2018
Location: Missouri
Posts: 1,635
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#Fab5 ftw lol
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Previous PB:11.079 @ 122.99mph.. New setup time: TBD
The 11.079 pass: https://youtu.be/pz27Zq54t_E Build thread - www.camaro5.com/forums/showthread.php?t=555371 |
07-12-2019, 10:04 AM | #16 | |
Drives: 2013 Camaro 2SS Join Date: Jun 2019
Location: Salem, OR
Posts: 115
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07-12-2019, 10:05 AM | #17 |
Drives: 2013 Camaro 2SS Join Date: Jun 2019
Location: Salem, OR
Posts: 115
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07-12-2019, 10:15 AM | #18 |
Drives: 14 Camaro SS 1LE Join Date: Feb 2019
Location: Clinton Twp, MI
Posts: 483
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They will fit fine. LS7 heads are interchangeable with LS3 heads from a bolt pattern perspective.
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07-14-2019, 11:00 AM | #19 |
old school chevy rodder
Drives: 2013 2SS/RS Manual,DM exhaust,CRT Join Date: Jul 2012
Location: Oregon
Posts: 5,588
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The deal is they are ls7 style small bore heads which means they will down size to fit a ls3 that's been stroked. A ls7 has a different bore than a stroked ls3 to get to its 427 cubes....also a ls7 block can only be overhoned .005 and therefore IMO and lots of others a real POS for future build perspective as just a overhone for new pistons and your there... brand new...you can if you researched find the ls7 engine for sale fairly cheap used because its just the parts and the life of the engine is very limited unfortunately....
That's the dirty little secret why the corvette guys are not all oh the ls7 zo6 is the greatest since sliced bread they ditch them....and go aftermarket block or ls3 even, and why the Corvette let the Camaro adopt the vaunted ls7 for the z-28 because its not like it was that great..... so it could rev higher with 1.8 rockers and a had more torque down low.... Me I thought it also insulting the ZL1 was not a 427 but then again......better off with out the ls7 to make one...because at least a ls3 can overhone .020, compare that to good old SBC/BBC iron blocks that you could overbore .060 for multiple rebuilds and yup its a total trash it block, I bought my new ls3 bare block for like $1400.... compare it to the ls7 block there is none in price and also BTW the ls7 heads at first were crap also until they got them right. The max heads will fit a stock ls3 block also its just not going to be as powerful of course as a stroked engine with larger cylinders to fill being that engines are basically a air pump.. and why a good FI small bore ls7 headed ls3 stroker is about as good as it gets as far as power output and longevity unless you want to get into aftermarket blocks and more $$$$$$
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07-15-2019, 06:47 AM | #20 | |
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2010 C6 JET STREAM BLUE
BOLT ONS TO THE EXTREME, GPI 281cc HEADS, Darth_V8r SPEC CAM, FAST 102 INTAKE, CRANK SCRAPER, QUARTER MASTER 7.25" CLUTCH, RPM 3.90 STAGE II DIF, Z51 Gear Set AND E85 Best ET 10.58 @ 131.8 stock heads and stock cam 453/445 SAE 10.62@134.82 GPI 281CC Heads, SS4 Cam and X1 Intake Best 1/8 6.80@105.75 Best MPH 134.82 |
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07-15-2019, 05:06 PM | #21 | |
Donkey Dick Cam Camaro
Drives: 2010 2SS/RS LS3 M6 Join Date: Oct 2009
Location: Los Angeles, CA
Posts: 2,000
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If you are stroking an LS3 to get 427 cubes out of it, the piston skirts are gonna come way down into the crankcase are. piston speed is gonna be through the roof. not sure if its a good combo if you wanna spin it too high
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07-15-2019, 05:48 PM | #22 | |
Drives: 2014 Chevy SS Join Date: Nov 2014
Location: San Antonio, TX
Posts: 277
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That said, your LS7 heads might fit the LS3 but you'll want to have the cylinders bored to at least 4.07". And even then, the tightness of the bores will not allow you to take full advantage of the LS7 heads flow capabilities. Bottom line, you will not get the full benefits of the LS7 Max Performance kit with the LS3 block. Plain and simple. KW
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1995 Impala SS -- Heads/Cam LS3
1996 Impala SS -- 398ci LL Solid Roller LT4 2014 Chevy SS --- 429ci Hydraulic Roller LS3 |
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07-15-2019, 06:15 PM | #23 | |
Drives: 2013 Camaro 2SS Join Date: Jun 2019
Location: Salem, OR
Posts: 115
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I suppose I could just ask GPI when the time comes to place the order, but I'm just curious in the meantime. |
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07-15-2019, 06:17 PM | #24 | |
Drives: 2013 Camaro 2SS Join Date: Jun 2019
Location: Salem, OR
Posts: 115
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Got it. I'll have to pick GPIs brain when the time comes. Since I have these GPI Max Performance heads, the next step would be to build the bottom end. I'm just not sure what that entails (i.e. boring and stroking the stock LS3 block, getting an entirely new block, etc.). It would be a shame to have to just ditch the heads when it comes time for a new bottom end, you know? |
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07-20-2019, 09:35 AM | #25 |
old school chevy rodder
Drives: 2013 2SS/RS Manual,DM exhaust,CRT Join Date: Jul 2012
Location: Oregon
Posts: 5,588
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You wont have to ditch the heads..... And if you price out a ls7 versus a stroked ls3 you will see the large disparity in price is big time, I would say a 418 some day will be fine as most do that /416 what ever and yes they make custom pistons just for stroking now adays……. Used ls7 like a said can be had for cheap....the blocks a boat anchor used.....usually.
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