Best manifold for LG4 with 750cfm Q-Jet
06-03-2008, 06:15 PM
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Car: Iroc
Engine: 350 4-bolt
Transmission: T5 non-W/C
Axle/Gears: 3.27 Open
Best manifold for LG4 with 750cfm Q-Jet
I have an 86 Lg4. Its got full exhuast 2.5" no cat. Im tuning the car to have full opening AV over the secondaries along with a G hanger and CK rods. What would be the best intake manifold for my car?
I also don't have a smog pump so i don't really want an EGR valve.
I also don't have a smog pump so i don't really want an EGR valve.
06-03-2008, 08:55 PM
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Re: Best manifold for LG4 with 750cfm Q-Jet
Performer RPM QJet, although hood clearance will be tight. There is no air gap version of this manifold- just the "standard" RPM version.
DON'T adapt the Qjet onto a squarebore (holley) style manifold in a performance application.
DON'T adapt the Qjet onto a squarebore (holley) style manifold in a performance application.
06-03-2008, 09:19 PM
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Car: 1984 LG4 Camaro
Engine: 350 Roller Motor
Transmission: Level 10 700R4
Axle/Gears: Strange 12 bolt 3.42
Re: Best manifold for LG4 with 750cfm Q-Jet
Honestly, a 750 is overkill - unless you have a 450+ hp 383....
Anyway, you can get a Weiand street ram low profile q-jet pattern that should clear as well or better than a Performer RPM.
Anyway, you can get a Weiand street ram low profile q-jet pattern that should clear as well or better than a Performer RPM.
06-03-2008, 11:56 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Unless you have a cam with a powerband over 5500 RPMs, a Performer, Action+, or GMPP q-jet intake (ZZ4 take-off) would be fine.
A "750 CFM q-jet" isn't too big for a 305. It will adjust its "size" to the needs of the engine.
A "750 CFM q-jet" isn't too big for a 305. It will adjust its "size" to the needs of the engine.
06-04-2008, 03:04 PM
#6
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Re: Best manifold for LG4 with 750cfm Q-Jet
The 750 Q-jet will be alright, possably less efficient than a lower CFM carb. Q-jets tend to run a larger CFM rate than holleys or carters for the same app.
06-04-2008, 05:26 PM
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06-04-2008, 08:25 PM
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Car: Iroc
Engine: 350 4-bolt
Transmission: T5 non-W/C
Axle/Gears: 3.27 Open
Re: Best manifold for LG4 with 750cfm Q-Jet
Which Performer is best for my app?
Edelbrock 2101 - http://store.summitracing.com/partde...1&autoview=sku
(RPM) Edelbrock 7501 - http://store.summitracing.com/partde...1&autoview=sku
Edelbrock 2601 - http://store.summitracing.com/partde...1&autoview=sku Will this Air-Gap fit with the stock air cleaner assembly??
Edelbrock 2101 - http://store.summitracing.com/partde...1&autoview=sku
(RPM) Edelbrock 7501 - http://store.summitracing.com/partde...1&autoview=sku
Edelbrock 2601 - http://store.summitracing.com/partde...1&autoview=sku Will this Air-Gap fit with the stock air cleaner assembly??
06-04-2008, 11:39 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The 7501 is a squarebore, would need an adapter to mount the q-jet.
Neither the 2101 nor 2601 have EGR.
The height from the engine to the carb mount are identical between the 2101 and 2601.
The 3701 would be fully legal.
The EGR valve has nothing to do with the A.I.R. system ("smog pump", as you called it).
Neither the 2101 nor 2601 have EGR.
The height from the engine to the carb mount are identical between the 2101 and 2601.
The 3701 would be fully legal.
The EGR valve has nothing to do with the A.I.R. system ("smog pump", as you called it).
06-05-2008, 12:54 AM
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Car: 1986 Pontiac Firebird S/E
Engine: 305 carb'd V8
Transmission: 4-speed auto
Axle/Gears: Stock
Re: Best manifold for LG4 with 750cfm Q-Jet
The 7501 is a squarebore, would need an adapter to mount the q-jet.
Neither the 2101 nor 2601 have EGR.
The height from the engine to the carb mount are identical between the 2101 and 2601.
The 3701 would be fully legal.
The EGR valve has nothing to do with the A.I.R. system ("smog pump", as you called it).
Neither the 2101 nor 2601 have EGR.
The height from the engine to the carb mount are identical between the 2101 and 2601.
The 3701 would be fully legal.
The EGR valve has nothing to do with the A.I.R. system ("smog pump", as you called it).
Kid is right, it's 3701 not 2401 like I said.
Last edited by Guro 305; 06-05-2008 at 12:56 AM. Reason: Correction
06-07-2008, 04:57 PM
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Car: Iroc
Engine: 350 4-bolt
Transmission: T5 non-W/C
Axle/Gears: 3.27 Open
Re: Best manifold for LG4 with 750cfm Q-Jet
i realize that egr and smog pump (a.i.r) have nothing to do with each other, I was just pointing out that im already not legal so i might as well not worry about it. But thank you.
I like the EPS airgap one. Good rpm rage for the stock cam. Do you know if the 2601 will fit under the hood? Would it be a good intake for me? I think it will but i tend to rely on everything five7kid says haha.
I like the EPS airgap one. Good rpm rage for the stock cam. Do you know if the 2601 will fit under the hood? Would it be a good intake for me? I think it will but i tend to rely on everything five7kid says haha.
06-07-2008, 11:17 PM
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Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Re: Best manifold for LG4 with 750cfm Q-Jet
i realize that egr and smog pump (a.i.r) have nothing to do with each other, I was just pointing out that im already not legal so i might as well not worry about it. But thank you.
I like the EPS airgap one. Good rpm rage for the stock cam. Do you know if the 2601 will fit under the hood? Would it be a good intake for me? I think it will but i tend to rely on everything five7kid says haha.
I like the EPS airgap one. Good rpm rage for the stock cam. Do you know if the 2601 will fit under the hood? Would it be a good intake for me? I think it will but i tend to rely on everything five7kid says haha.
You cannot beat an Edelbrock 7104 Performer RPM Spreadbore for a street driven Q-Jet fed engine. It has sharp response at ALL engine RPMs and gets good gas mileage. I had one on my 305 in my fullsize van. No complaints at all. Nudge the gas and it was pulling.
http://store.summitracing.com/partde...6383&N=700+115
06-08-2008, 12:20 AM
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Car: 1986 Pontiac Firebird S/E
Engine: 305 carb'd V8
Transmission: 4-speed auto
Axle/Gears: Stock
Re: Best manifold for LG4 with 750cfm Q-Jet
i realize that egr and smog pump (a.i.r) have nothing to do with each other, I was just pointing out that im already not legal so i might as well not worry about it. But thank you.
I like the EPS airgap one. Good rpm rage for the stock cam. Do you know if the 2601 will fit under the hood? Would it be a good intake for me? I think it will but i tend to rely on everything five7kid says haha.
I like the EPS airgap one. Good rpm rage for the stock cam. Do you know if the 2601 will fit under the hood? Would it be a good intake for me? I think it will but i tend to rely on everything five7kid says haha.
07-02-2008, 09:23 AM
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Car: 1987 IROC
Engine: 350 Gm H.O
Transmission: 700r4 built
Axle/Gears: 3.42 Locker
Re: Best manifold for LG4 with 750cfm Q-Jet
A friend of mine dropped off a 2101 manifold for me recently he has no use for. I have an 87 camaro and summit says it is only good to 86. Is that because my heads are center bolt? It also doesn't have EGR. Does that mean I can't use it or can I just block it off and forget about it without any codes popping up?
07-02-2008, 10:51 AM
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Re: Best manifold for LG4 with 750cfm Q-Jet
----------
A friend of mine dropped off a 2101 manifold for me recently he has no use for. I have an 87 camaro and summit says it is only good to 86. Is that because my heads are center bolt? It also doesn't have EGR. Does that mean I can't use it or can I just block it off and forget about it without any codes popping up?
Last edited by SteelTownMadDog; 07-02-2008 at 10:52 AM. Reason: Automerged Doublepost
07-02-2008, 01:12 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
CC carb won't turn on the SES light as long as the EGR solenoid is plugged in.
I've heard it will set a trouble code, although mine doesn't.
I've heard it will set a trouble code, although mine doesn't.
07-02-2008, 06:05 PM
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Car: 1987 IROC
Engine: 350 Gm H.O
Transmission: 700r4 built
Axle/Gears: 3.42 Locker
Re: Best manifold for LG4 with 750cfm Q-Jet
I have a Q-jet, so does that mean this manifold I have will fit my 305 motor? I just want to be positive before I take my carb, distributor, and other stuff off to find out this 2101 manifold doesn't fit. So does having centerbolt heads make a difference for fitment? I'll just give it to my brother and get the 3706 performer if it doesn't work.
Thank you guys for your help
Thank you guys for your help
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