Holley fuel injection
#2040473
03/28/16 03:37 PM
03/28/16 03:37 PM
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Joined: Oct 2007
Posts: 3,978 Hilltown Pa
1967dartgt
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Would a Holley 112-578 throttle body be good for a nitrous sb race motor? Is there a better option? New to fuel injection and thinking of starting to collect some parts to get the conversion started.
Brett Miller W9 cnc'd heads STR Chassis fabraction
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Re: Holley fuel injection
[Re: 1967dartgt]
#2040486
03/28/16 03:51 PM
03/28/16 03:51 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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That is just the throttle body for a multi point.. I went with this one... its the 4150 base.. 1000cfm http://www.summitracing.com/parts/hly-550-500or if you want to use a 4500 base they have this one http://www.summitracing.com/parts/hly-550-501 you still have to buy injectors and the pump... talk to Monte for a price.. he helped me out EDIT also being that its a dry throttle body its just air so its more air than the same size as a carb thats moving both air and fuel
Last edited by MR_P_BODY; 03/28/16 03:57 PM.
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Re: Holley fuel injection
[Re: 1967dartgt]
#2040555
03/28/16 05:42 PM
03/28/16 05:42 PM
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Posts: 8,037 Tulsa OK
Bad340fish
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Check out the MS3PRO, more features than the holley and less money.
MS3PRO.COM
I have a holley cast 4150 Throttle body, not as low profile as some of the other ones but less expensive.
68 Barracuda Formula S 340
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Re: Holley fuel injection
[Re: 1967dartgt]
#2040886
03/29/16 01:01 AM
03/29/16 01:01 AM
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Joined: Oct 2007
Posts: 3,978 Hilltown Pa
1967dartgt
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Need a 4500 throttle body as all my intakes and nitrous plates are 4500.
Brett Miller W9 cnc'd heads STR Chassis fabraction
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Re: Holley fuel injection
[Re: 1967dartgt]
#2041048
03/29/16 10:35 AM
03/29/16 10:35 AM
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Joined: Jan 2003
Posts: 13,404 Marion, South Carolina [><]
an8sec70cuda
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I Live Here
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FWIW...I'm freshening up a 434" SB Chevy out of a friends boat. It had FAST XFI on it, but now he's changing over to FITech and gonna have Kevin Mullins tune it.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: Holley fuel injection
[Re: SpareParts]
#2041071
03/29/16 11:23 AM
03/29/16 11:23 AM
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Joined: Feb 2003
Posts: 1,942 Metro Detroit
OUTLAWD
top fuel
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top fuel
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Metro Detroit
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Brad check out the new stuff from FItech too, good thread on the bullet about that
I have the FITech unit on order. $150 rebate + Summit 10% wasn't a bad deal. Should arrive next week. Evidently the Throttle body only flows ~850, which should be OK for me, but might be a deal breaker for a fast guys. Evidently they do not offer much tuning support via the advanced software, and I am a little afraid of what the interface will look like, I have yet to find anyone that has messed with it.
Faster, Faster until the thrill of speed overcomes the fear of death...
71 Swinger - slowly collecting dust/parts 66 Belv. II - just a streetcar 88 Mustang - turbo LS beater
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Re: Holley fuel injection
[Re: Monte_Smith]
#2041102
03/29/16 12:13 PM
03/29/16 12:13 PM
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Joined: Feb 2003
Posts: 21,318 Manitoba, Canada
DaytonaTurbo
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Several on the net rave about Mega-Squirt......YET, to see one on a fast race car. Probably a reason for that
MS is not plug and play, nor is it something you can get into if you don't have the desire to learn and understand how the system works. Not a great choice if you're looking to plop something on and go.
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Re: Holley fuel injection
[Re: 1967dartgt]
#2041180
03/29/16 02:18 PM
03/29/16 02:18 PM
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Joined: Oct 2007
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1967dartgt
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Monte there is not a down side to running a 2000 cfm throttle body on a 420 cu in small block?
Brett Miller W9 cnc'd heads STR Chassis fabraction
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Re: Holley fuel injection
[Re: 1967dartgt]
#2041208
03/29/16 03:05 PM
03/29/16 03:05 PM
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Joined: Jan 2003
Posts: 8,037 Tulsa OK
Bad340fish
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I have seen EFI small blocks with 4000CFM of throttle bodies on a tunnel ram
68 Barracuda Formula S 340
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Re: Holley fuel injection
[Re: 1967dartgt]
#2041209
03/29/16 03:06 PM
03/29/16 03:06 PM
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Posts: 2,540 Milwaukee WI
TRENDZ
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The only exception I have to what Monte says, would be light throttle driveability. I know this is a race engine, and not a big concern, but going to big on a throttlebody (and I mean way to big)can make real world driving tricky. It can be difficult to get throttle enrichments just right, and the throttle cable "cam" usually needs some mods to be able to have fine foot control. And as far as the holley efi... I am sold on its effectiveness and capabilities. I've used MS stuff(never the 3 though) and find it hard to believe that it is more capable than the Holley.
"use it 'till it breaks, replace as needed"
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Re: Holley fuel injection
[Re: 1967dartgt]
#2041260
03/29/16 04:41 PM
03/29/16 04:41 PM
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Joined: Nov 2004
Posts: 6,890 North Alabama
Monte_Smith
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Most throttle bodies have the option to be one to one, or progressive on the linkage. We set up all drag cars one to one......BUT, if you wanted easier drivability with a big throttle body, you could opt for progressive. I have two HUGE throttle bodies on my jet boat, on a fairly mild 500" motor. I set the linkages up progressive and throttle control is VERY good
As far as EFI, guys like what they like and what they like, tends to be better than everything else to THEM. I have tuned cars with Motec, Holley, FAST, Big Stuff, Accel, Hal-Tech, Fuel Tech, Mega-Squirt and some others. I have YET to see anything more versatile and easier to work with than Holley. Not saying that because I work for Holley either. Every racer I have talked to that switched to Holley from what they had, can't believe how easy it is to use and how much more it does than what they had before. Now Motec, is probably the most advanced system out there, but you need a PhD to be able to use it all......LOL!!!
For "power adder" controls, nothing and I repeat NOTHING is as versatile as Holley. Not even close
Last edited by Monte_Smith; 03/29/16 04:49 PM.
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