gm sinlge plane intake for lt1
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Registered User
Joined: Mar 2005
Posts: 82
gm sinlge plane intake for lt1
i have a few ? about this intake. first does it take away the opti and use a regulat distributor or does it function with the opti .two is it worth the swap? is there any advantaged to using a carb set up? in jegs is says its a direct bolt on swap , and i want a carb set up anyways to be diffrent from my other f body friends ? heres the lint to what im talkin about
http://www.jegs.com/i/GM-Performance...2592/10002/-1#
http://www.jegs.com/i/GM-Performance...2592/10002/-1#
Registered User
Joined: Jul 2004
Posts: 42
I'm doing this right now to my engine.
That is not a single plane, it's a dual plane.
There is another part supplied by GM performance parts that covers the hole in the timing cover that's normally used to drive the optispark.
If you're putting this in an F-body you might want to make sure you have hood clearance.
Advantages of carb over fuel injection - cost, simplicity, tuneability, bracket racing consistency, no need to install ecm and huge wiring harness in whatever car the engine goes in.
Need more fuel? Just get a bigger carb instead of injectors, pump and pcm reprogram.
Need more air? Bigger carb instead of different intake manifold, cold air, etc.
Need different timing? Just rotate the distributor instead of getting pcm reprogram.
PCM changing fueling, timing, etc while driving due to air temp, water temp, knock etc? That's not good for bracket racing!
That is not a single plane, it's a dual plane.
There is another part supplied by GM performance parts that covers the hole in the timing cover that's normally used to drive the optispark.
If you're putting this in an F-body you might want to make sure you have hood clearance.
Advantages of carb over fuel injection - cost, simplicity, tuneability, bracket racing consistency, no need to install ecm and huge wiring harness in whatever car the engine goes in.
Need more fuel? Just get a bigger carb instead of injectors, pump and pcm reprogram.
Need more air? Bigger carb instead of different intake manifold, cold air, etc.
Need different timing? Just rotate the distributor instead of getting pcm reprogram.
PCM changing fueling, timing, etc while driving due to air temp, water temp, knock etc? That's not good for bracket racing!
Registered User
Joined: Jul 2002
Posts: 1,942
From: Kissimmee, Fl, USA
If the dual plane manifold actually does generate 30 more lb-ft of torque, why not keep it, build it into an FI intake by installing fuel rails and injectors, and then fab up an elbow to mount up a throttle body. It could be pretty interesting.....
Registered User
Joined: Feb 2007
Posts: 322
From: mechanicville n/y
i'm doing this right now to my engine.
That is not a single plane, it's a dual plane.
There is another part supplied by gm performance parts that covers the hole in the timing cover that's normally used to drive the optispark.
If you're putting this in an f-body you might want to make sure you have hood clearance.
Advantages of carb over fuel injection - cost, simplicity, tuneability, bracket racing consistency, no need to install ecm and huge wiring harness in whatever car the engine goes in.
Cost? By the time ya buy intake ,carb ,f.p.r ,and other **** your way more than a tune.consistancy are u on crack
need more fuel? Just get a bigger carb instead of injectors, pump and pcm reprogram.
Come on r u serious
need more air? Bigger carb instead of different intake manifold, cold air, etc.
Need different timing? Just rotate the distributor instead of getting pcm reprogram. Yeah cause thats easy on a f-body
pcm changing fueling, timing, etc while driving due to air temp, water temp, knock etc? That's not good for bracket racing! Yeah cause settin the pcm up right the first time is no wheres near consistant and constanly needs tuning where a carb wont
That is not a single plane, it's a dual plane.
There is another part supplied by gm performance parts that covers the hole in the timing cover that's normally used to drive the optispark.
If you're putting this in an f-body you might want to make sure you have hood clearance.
Advantages of carb over fuel injection - cost, simplicity, tuneability, bracket racing consistency, no need to install ecm and huge wiring harness in whatever car the engine goes in.
Cost? By the time ya buy intake ,carb ,f.p.r ,and other **** your way more than a tune.consistancy are u on crack
need more fuel? Just get a bigger carb instead of injectors, pump and pcm reprogram.
Come on r u serious
need more air? Bigger carb instead of different intake manifold, cold air, etc.
Need different timing? Just rotate the distributor instead of getting pcm reprogram. Yeah cause thats easy on a f-body
pcm changing fueling, timing, etc while driving due to air temp, water temp, knock etc? That's not good for bracket racing! Yeah cause settin the pcm up right the first time is no wheres near consistant and constanly needs tuning where a carb wont
Registered User
Joined: Dec 2007
Posts: 136
From: Lincoln, NE
i love my fuel injected 94 Z because i knock ot 25 mpg on hwy. I'm new into fuel injection but have 28 years with big block and small block chevys. If my Z had a old school SB I would be running 11.5's but it is alot more to build a fuel injected motor. I just dont have the money to get to the 11's with my Z. So this should not go into a debate for the simple fact that we all have our favorites. I just choose to convert to driving my 11.0 car on the street with pump gas and still knock close to 20 mpg's. In other words, Both are great preformers, but its just what we choose to like. If you think about it no one wants to knock someone elses preference, we just need to think before we post. Sorry, not meaning to insult anyone. Curt
Registered User
Joined: Jul 2004
Posts: 42
I wasn't telling the OP he should change from fuel injection to carburetor.
I was just listing the potential advantages of using a carburetor.
If his car already has a functioning fuel injection setup and he just drives the car to work everyday, obviously he should leave the fuel injection in place.
But that's not the question the OP asked and I'm not going to make any assumptions.
If you look through the OP's other posts, he says he has a 93 auto z28, a 94 auto z28, a 94 manual z28, a 95 manual z28, a 97 trans am and a 2000 z28, all with problems. Maybe he wants to use one of them for bracket racing only. Or maybe he doesn't have an f-body at all and he's just screwing with everyone.
I was just listing the potential advantages of using a carburetor.
If his car already has a functioning fuel injection setup and he just drives the car to work everyday, obviously he should leave the fuel injection in place.
But that's not the question the OP asked and I'm not going to make any assumptions.
If you look through the OP's other posts, he says he has a 93 auto z28, a 94 auto z28, a 94 manual z28, a 95 manual z28, a 97 trans am and a 2000 z28, all with problems. Maybe he wants to use one of them for bracket racing only. Or maybe he doesn't have an f-body at all and he's just screwing with everyone.
Last edited by 65MalibuSS; Jun 4, 2009 at 10:24 AM.
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