Need some camshaft direction...LS-L92??
09-07-2014, 06:00 PM
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Need some camshaft direction...LS-L92?? Hey guys well as luck would have it ive been running into some Crazy a$$ deals lately. I picked up an 06' Lq4 longblock with 87k for 350.00 complete. Block is clean with the exception of one cylinder that I believe needs bored so ill be dropping the block off to get machined. My plan was to do a nice set of Scat I-beams and forged pistons, cut the 317s down for some added compression and do a nice cam/spring setup to go into my 3100 Sn95 mustang th-400....
Well after reading and reading multiple on here I asked myself 317 vs L92...DUHHH lol the answer was obvious! My car is 90% track car and driven maybe 1-2 days a week to the local street racing meet. After reading a lot about the l92s they just appealed more and more to me! So I just picked up a complete pair of 823/L92 squareports for 500.00!!! Ive been trying to read a lot about the squareports and from what im gathering is there needs to be a big split on the intake/exhaust (camshaft) due to low cross section or reversion in the intake? also that bc of the massive amount of flow, these heads have issues with power under the curve? Im just trying to understand what I can so bear with me lol...
As far as building this motor, ive seen a lot of people building "iron block ls3" Ive been told by a local Ls builder that the block cannot be bored .070 is this true? Also from what im seeing to make this motor work, I DEFINTALY have to have a custom cam ground. I look forward to working with Martin at Tick Perf. from all the awesome feedback ive seen on here as well. Martin seems very very knowledgeable expecially when it comes to CARB camshafts. The car will be on pump gas so I would like to be in the 11-11.5 range for compression.. Can anyone supply some ficticious cam guestimates as well? heres a rundown of what I would like to build...
Lq4 stock crank
Scat I beam rods (ws6 store)
2618 Forged piston with reliefs for l92- or just l92 pistons if they can be used
Gm headgaskets (what thickness? .51? .54?)
Arp head studs (already have)
Custom Tick Performance Camshaft Hyd. roller/matching dual springs
Edelbrock L92 Vic jr intake
Barry grant Mighty Demon 750-850 depending on needs
This car will be sprayed, but with NO MORE than a 300 shot (max my plate will flow). It has a dedicated fuel system already that's sprays 118 outlaw fuel into a Nitrous works Plate. Thanks in advance for helping out guys!
Well after reading and reading multiple on here I asked myself 317 vs L92...DUHHH lol the answer was obvious! My car is 90% track car and driven maybe 1-2 days a week to the local street racing meet. After reading a lot about the l92s they just appealed more and more to me! So I just picked up a complete pair of 823/L92 squareports for 500.00!!! Ive been trying to read a lot about the squareports and from what im gathering is there needs to be a big split on the intake/exhaust (camshaft) due to low cross section or reversion in the intake? also that bc of the massive amount of flow, these heads have issues with power under the curve? Im just trying to understand what I can so bear with me lol...
As far as building this motor, ive seen a lot of people building "iron block ls3" Ive been told by a local Ls builder that the block cannot be bored .070 is this true? Also from what im seeing to make this motor work, I DEFINTALY have to have a custom cam ground. I look forward to working with Martin at Tick Perf. from all the awesome feedback ive seen on here as well. Martin seems very very knowledgeable expecially when it comes to CARB camshafts. The car will be on pump gas so I would like to be in the 11-11.5 range for compression.. Can anyone supply some ficticious cam guestimates as well? heres a rundown of what I would like to build...
Lq4 stock crank
Scat I beam rods (ws6 store)
2618 Forged piston with reliefs for l92- or just l92 pistons if they can be used
Gm headgaskets (what thickness? .51? .54?)
Arp head studs (already have)
Custom Tick Performance Camshaft Hyd. roller/matching dual springs
Edelbrock L92 Vic jr intake
Barry grant Mighty Demon 750-850 depending on needs
This car will be sprayed, but with NO MORE than a 300 shot (max my plate will flow). It has a dedicated fuel system already that's sprays 118 outlaw fuel into a Nitrous works Plate. Thanks in advance for helping out guys!
09-07-2014, 07:38 PM
#2
Sounds like you are on the right track with everything. Just make sure the machine shop you choose is familiar with and experienced with LS engines.
A definite yes to the forged pistons. As for the head gaskets, a lot of guys have had great luck with the LS9 headgaskets. I use the regular GM MLS gasket and have hit them with up to a 200 shot on stock headbolts and no problems so far.
As for your cam, you arleady have a great guy on the case. Just go with his knowledge. Besides, you did not even mention what the engine is going in and how it is set up: trans, stall, gears, tires, weight, goals etc.
A definite yes to the forged pistons. As for the head gaskets, a lot of guys have had great luck with the LS9 headgaskets. I use the regular GM MLS gasket and have hit them with up to a 200 shot on stock headbolts and no problems so far.
As for your cam, you arleady have a great guy on the case. Just go with his knowledge. Besides, you did not even mention what the engine is going in and how it is set up: trans, stall, gears, tires, weight, goals etc.
09-07-2014, 09:21 PM
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Sorry about that speedtigger!
Here's the run down
msd 6010
Barry Grant Mighty Demon 750 annular carb
Dynatech 1 7/8 longtubes, x pipe, ultra flo mufflers
Jw Th400 Reverse manual transbrake trans
Revmax Billet 3600 nitrous convertor
3100lb SN95 mustang
Full Upr chromoly tubular front everything
strange 10 way front/rear
Full Team Z rear suspension
1000hp built 8.8 rear (spool,4.10,33spl mosers)
275/60/15 rear
The will be tuned on 93 pump gas for the motor and has a front cell for nitrous that runs 118 Outlaw N20
Here's the run down
msd 6010
Barry Grant Mighty Demon 750 annular carb
Dynatech 1 7/8 longtubes, x pipe, ultra flo mufflers
Jw Th400 Reverse manual transbrake trans
Revmax Billet 3600 nitrous convertor
3100lb SN95 mustang
Full Upr chromoly tubular front everything
strange 10 way front/rear
Full Team Z rear suspension
1000hp built 8.8 rear (spool,4.10,33spl mosers)
275/60/15 rear
The will be tuned on 93 pump gas for the motor and has a front cell for nitrous that runs 118 Outlaw N20
09-07-2014, 09:23 PM
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The machine shop is very familiar with the ls engines which is good. Should i have them bring then deck to Zero deck? Also with the L92s is there any truth to compromising the strength if they get cut??
09-08-2014, 03:44 AM
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If its dedicated nitrous then it changes a few things, and always harder to run solid na times. Sounds like 230s/240s 650ish, but 112-114 (if na could pull down 107-110)
09-08-2014, 06:32 AM
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I believe the car can run 10s NA which I would be very happy with. Id rather really let the car fly on the spray so its not too radical on motor all the time. We just went 12.2 on motor in a cam only stock card'd 5.3. It has a spray cam (112+4) and went 10.05 on a .93 jet. I would like the same kind of results with the squareports but 10's on motor and 9's on spray
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09-08-2014, 09:58 AM
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were building about the same combo, heres mine stock bore 6.0, scat 6.125 rods, probe forged pistons 10.8:1 on a 70cc head with .050 gasket, l92 with prc double springs, 235/248 @ .050 with .610/.595 lift, victor jr intake and 850 carb. I may go thinner head gasket to bring the compression up a tad, just depends on piston to valve clearance.
09-08-2014, 12:09 PM
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Tim: awesome! thanks i just called probe and spoke to them about there SRS pistons. Did you happen to do the Pin upgrade? Is it worth doing? I was thinking about doing a small mill on the heads .020-.030 not sure yet though.
09-08-2014, 01:48 PM
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I will have to bore .030. Thats good to know that summit was cheaper tho! Thank You! Im looking at alot of different piston options right now. Alot of 4032 vs 2618 debate too... DSS has a nice set and after talking to Tom @DSS very nice and knowledgable he says the 4032 will work great. But reading alot of threads alot of people are saying 2618 all day. I am spraying 300 shot max on a dedicated system...Not sure if the 4032 can handle that though.
09-08-2014, 02:13 PM
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NVM! i just looked and they offer that in the 4.030 bore for 519.00 Thats even better! lol I was looking at these http://www.dssracing.com/1820SX_p/1820bsx.htm seems like a nice price only 399.00! then again they are 4032 though :/
09-08-2014, 02:22 PM
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I hope some of you have better luck with DSS than I did a few years back. I waited about 5 weeks for some parts and finally told them forget it. And using the thinner head gasket. Just make sure your quench is good. With aftermarket pistons might be fine. I dont even think I could go .040 with my head gasket with stock pistons. I might, but it would be tight.
09-08-2014, 02:28 PM
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I hope some of you have better luck with DSS than I did a few years back. I waited about 5 weeks for some parts and finally told them forget it. And using the thinner head gasket. Just make sure your quench is good. With aftermarket pistons might be fine. I dont even think I could go .040 with my head gasket with stock pistons. I might, but it would be tight.
09-08-2014, 02:32 PM
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What area would you guys recommend on the quench btw? With me using the square port head vs the cathedral im trying to evaluate all my specs prior to building before it goes together. arent the 30's ideal? how do i figure this out also lol
