Intake advice for 383
Thread Starter
Pro
Joined: Dec 1999
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From: Venetia,Pa,USA
Intake advice for 383
I just recently installed a 383 in my track car. Previously had a ZZ4 with a Super Ram which worked fine for 8 years but Super Ram was a PITA to install/remove and I wore the engine out. Before anyone says modify if for faster installation removal; I did that but it still was a PITA. The 383 was dynoed at the factory at 430 HP at the engine using a carb. I've tried getting by with a stock TPI from a 350 Corvette engine. I was hoping that it would pull to 5000 RPM but runs out of steam at around 4000 RPM. I'm using 24 lb injectors and a reprogrammed chip. I guess I'm asking what can I use if anything other than just switching to a carb?? I'm not against a carb but since I am already fuel injected I should investgate that first. I'd like to get around 390 HP at the engine. All input is wanted and appreciated.
Thanks
Thanks
Safety Car
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From: Glenbeulah Wi
Use a miniram, easy to install, and should easily hit your 390 HP goal, probably hit the 430 HP number of the carb. Other wise use a carb style intake with fuel injector bungs and an air valve.
Le Mans Master
Joined: Aug 2007
Posts: 8,735
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From: WV
Mini ram, First intake, HSR, any of these will pull past 5500 rpms ...Im running an Edelbrock intake, Accel runners, mega ported plenum all reamed out and port matched and my 383 pulled to 5000 rpms without a problem, but If I was racing my car, the Mini ram is what I would use.You lose a little torque with the Mini ram, but pick up HP.....
..WW
..WW
Last edited by WW7; Sep 27, 2013 at 09:22 AM.
Drifting
Joined: May 2013
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From: Reno Nevada
My stock TPI runs to 5500 easily, Is your programming modified for the cam, or was the flowrate just changed? Above 5500 the intake should be changed, but stock programming is the limit below that.
Le Mans Master
Joined: Aug 2007
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From: WV
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Last edited by WW7; Sep 27, 2013 at 08:59 AM.
Drifting
Joined: May 2013
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From: Reno Nevada
Bottomline is that I was just suggesting the OP consider his programming as well.
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From: Orange So Cal
Take an Edelbrock manifold, weld up the top of each port, raise the roof 1/4" and go from 260 cfm to 300+ cfm and you will see power above 6000 rpm's.
It can still retain the tq. at low rpm's. My 350 is 400/430 @ the wheels.
400 peak @ 6000 430 tq. @ 3500.
It can still retain the tq. at low rpm's. My 350 is 400/430 @ the wheels.
400 peak @ 6000 430 tq. @ 3500.
Thread Starter
Pro
Joined: Dec 1999
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From: Venetia,Pa,USA
Dyno Don. I don't completely understand what you are saying for mods. Also would a Accel SuperRam intake work??
Does anyone have a picture of a Miniram installed on a L98?? Does the fuel injection rails, intake manifold [ a Accel intake from a SuperRam setup ] already on the engine need to be replaced or just the plemium/runners.
Thanks for any additional info.
Does anyone have a picture of a Miniram installed on a L98?? Does the fuel injection rails, intake manifold [ a Accel intake from a SuperRam setup ] already on the engine need to be replaced or just the plemium/runners.
Thanks for any additional info.
Safety Car
Joined: Jan 2004
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As per the link I posted for you above.
performance wise , the SR falls mid range between the long runner TPI style intakes and the short runner MR /SP / HSR intakes
http://forums.corvetteforum.com/1544096352-post1.html
performance wise , the SR falls mid range between the long runner TPI style intakes and the short runner MR /SP / HSR intakes
http://forums.corvetteforum.com/1544096352-post1.html
Last edited by vetteoz; Sep 29, 2013 at 08:57 AM.
Safety Car
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See
http://www.eecis.udel.edu/~davis/z28....tpis.com.html
Race Director
Joined: Jun 2004
Posts: 13,957
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From: WI
They come up for sale used here somewhat often. I wouldn't pay full price for it new as there are other options. The MR is nice to work on! If you check my back threads I have posted pics of my combo. I switched from the SR as well. It's a good intake but I end up working on or changing my combo to much to put up with so many fasteners.
390 crank HP with a 383 seems so low but there have been a few low power combos posted lately. My 355 should be closing in on 400 wheel HP and I still don't have good heads lol
390 crank HP with a 383 seems so low but there have been a few low power combos posted lately. My 355 should be closing in on 400 wheel HP and I still don't have good heads lol
Race Director
Joined: Apr 2003
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From: moraga ca
Earlier this year I swapped out my extrude honed SuperRam for a Miniram. I had been running the SuperRam for a good number of years. It is a great manifold that would be terrific for a street/strip car. It has great bottom/midend torque and would pull to 6500 on my 406. I was able to pull 1.40 60' times with this manifold leaving at 2000 rpm. The Miniram has required the torque converter to be loosened up and I am now leaving at 3000 rpm. 60's are the same. The car is maybe .05 seconds quicker down the quarter. So far not a big deal. I have the motor out now for it's yearend checkup and am toying with the idea of giving it more camshaft. The SuperRam does take longer to install and remove, but I did this numerous times every year and it didn't bother me. Bottom line again is if I had a car on the street, a SuperRam can't be beat. Just my observation and opinion. Willie
Thread Starter
Pro
Joined: Dec 1999
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From: Venetia,Pa,USA
I run my car with NASA and SCCA. I am hoping for around 390 HP at engine or near 365 HP for rear wheels. That would be perfect for NASA ST 3. At 72 my back kills me after hours removing/installing the SR. The Miniram looks like a lot less work.
Next year could be my last year racing so I need a Miniram for installing before spring.
Again Thanks.
Next year could be my last year racing so I need a Miniram for installing before spring.
Again Thanks.
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Joined: Dec 2010
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From: Orange So Cal
Dyno Don. I don't completely understand what you are saying for mods. Also would a Accel SuperRam intake work??
Does anyone have a picture of a Miniram installed on a L98?? Does the fuel injection rails, intake manifold [ a Accel intake from a SuperRam setup ] already on the engine need to be replaced or just the plemium/runners.
Thanks for any additional info.
Does anyone have a picture of a Miniram installed on a L98?? Does the fuel injection rails, intake manifold [ a Accel intake from a SuperRam setup ] already on the engine need to be replaced or just the plemium/runners.
Thanks for any additional info.
I here ya on the back problem.
The only drawback to the Miniram is the rear cylinders tend to run a little richer than the front because of the low plenum.