L92 engine, ASA cam, carburetor, what intake?
07-28-2017, 09:07 PM
#1
L92 engine, ASA cam, carburetor, what intake? I would like to do a carbureted l92 engine with the ASA cam or something similar and would like to know what intake should I run...dual plane or single plane? This will be for my 1970 Camaro with a 6-speed manual autocross weekend warrior fun toy no drag racing other than maybe once or twice to see what it will do. Also what springs should I be looking for? Thanks
07-28-2017, 10:16 PM
#3
TECH Senior Member
And being an autocross setup, he might want some of that power in the low and midrange, which the dual-plane would give him more of over the single plane
07-30-2017, 12:47 PM
#5
I agree. A dual plane mid rise intake would work well, such as the Holley #300-129 or the Edelbrock Performer RPM #71197 to keep the power between 1,500-6,500 rpm, if using rectangular port heads. A single plane would push the peak power above 6,500+
Last edited by 07NBSChevy; 07-30-2017 at 12:54 PM.
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08-06-2017, 02:23 PM
#9
FormerVendor
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PML Intake = GMPP Hi Zero, I work/worked with PML/Wegner when we created the LS-"carb" intakes.
The ONLY ignition available, at that time, was my IGN-8, CNP.
I have stock (new) of LS-3 Intakes at great pricing. (POR)
We found the Single Plane worked well with the LS Firing Order 18726543.
The "dual plane" GM intakes where designed for the GM 18436572 Firing Order.
As for the Valve Springs, the ASA Camshaft was designed to use a PSI 1511ML Spring.
You will find the same "tech" when you call WEGNER Automotive as this was part of the NASCAR GN West project. (GMPP)
Lance
The ONLY ignition available, at that time, was my IGN-8, CNP.
I have stock (new) of LS-3 Intakes at great pricing. (POR)
We found the Single Plane worked well with the LS Firing Order 18726543.
The "dual plane" GM intakes where designed for the GM 18436572 Firing Order.
As for the Valve Springs, the ASA Camshaft was designed to use a PSI 1511ML Spring.
You will find the same "tech" when you call WEGNER Automotive as this was part of the NASCAR GN West project. (GMPP)
Lance
08-07-2017, 01:02 PM
#11
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ASA Camshaft = .450"/.460" ??? Hi Ryan, I agree with the High-Lift "tech" (ASA camshaft lift of .450" to a upgraded .595" lift) worth 44 HP @ 7000 RPM.
I would KEEP the L92 VVT with Limiters installed inside the VVT Motor.
I would Re-Grind your VVT camshaft (Crower $200.00)
I would fit my IGN-8 Ignition that allows VVT motor control.
I would install an Avon Gear Single Timing Chain with BILLET Sprockets AND a LS-2 Chain Guide.
I would use the fitted Oil Pump (OEM standard HV) with Shimmed Pressure Spring.
I would fit the GMPP "single" plane Intake Manifold with the LOGIC of VVT Camshaft Advance at lower RPM.
I would fit PSI-1511ML Valve Springs.
This specification = 530 Torque/620HP with an 830 CFM Holley.
Lance
I would KEEP the L92 VVT with Limiters installed inside the VVT Motor.
I would Re-Grind your VVT camshaft (Crower $200.00)
I would fit my IGN-8 Ignition that allows VVT motor control.
I would install an Avon Gear Single Timing Chain with BILLET Sprockets AND a LS-2 Chain Guide.
I would use the fitted Oil Pump (OEM standard HV) with Shimmed Pressure Spring.
I would fit the GMPP "single" plane Intake Manifold with the LOGIC of VVT Camshaft Advance at lower RPM.
I would fit PSI-1511ML Valve Springs.
This specification = 530 Torque/620HP with an 830 CFM Holley.
Lance
08-07-2017, 01:23 PM
#12
I would go a different route, save time and money, take the complication out, not regrind your camshaft and prob not use any 800cfm carb om your setup.
We put together plenty of these combos as well and can get you the straight forward approach that is drop in and go.
We put together plenty of these combos as well and can get you the straight forward approach that is drop in and go.
08-11-2017, 01:57 PM
#14
Maybe I should go about it this way. 1979 Camaro is about 3300lbs Idaho elevation is 2,800' goals are mid 11s @110+ with as much low end as I can have. 6spd manual trans. What parts are needed to get me there with a carburetor setup??
08-11-2017, 02:09 PM
#15
It will take a much larger cam than the asa or our high lift asa to make close to 500 at the wheels. On untouched rect port heads. Building a 370 would help out quite a bit.
Youre looking at a 230s/high 230s-low 240s cam with a good amt of lift. Lsa will depend on whether you use a dual plane or single and max rpm you are spinning it.
Any milling would set your cam specs back some also. 450 is alot more attainable. Our high lift asa, a single plane, milled rec heads to 65cc would prob get you VERY close.
Youre looking at a 230s/high 230s-low 240s cam with a good amt of lift. Lsa will depend on whether you use a dual plane or single and max rpm you are spinning it.
Any milling would set your cam specs back some also. 450 is alot more attainable. Our high lift asa, a single plane, milled rec heads to 65cc would prob get you VERY close.
08-11-2017, 02:13 PM
#16
I would like to do a carbureted l92 engine with the ASA cam or something similar and would like to know what intake should I run...dual plane or single plane? This will be for my 1970 Camaro with a 6-speed manual autocross weekend warrior fun toy no drag racing other than maybe once or twice to see what it will do. Also what springs should I be looking for? Thanks
LQ9
L92 Heads
GMPP or similar Dual Plain intake
Cam Motion Junkyard Dog Rectangle Port Camshaft
New Lifters (GM if on a budget, Johnson 2110 if you want the best)
Good dual valve spring kit
750 CFM mechanical secondary 4150 Holley based carburetor
1 3/4 or 17/8" headers
4.10-4.30 gears
Mickey Thompson drag radials for the drag strip portion of the show