Does any one have a thought on which system to go with, Edelbrock pro flow 2 or Fast e-z looking one of these for my street 70 Chevelle 540ci 9.8 to one .560 lift and 248 degrees of duration made 590hp and 598 ft lbs of torque. Looking some answers with experience with either.
Thanks

Check this out:

http://www.chevelles.com/forums/showthread.php?t=306642

The self-learn Holley systems are getting good reports from guys who have run them. Also, a Holley EFI engineer hangs out here and helps tguys who are having problems, even if they have another system. Recommend you look into those, maybe an Avenger system.

You can PM member Doug F. if you have any big questions about the systems.

The EZ EFI is good to 650 hp with a single throttle body so it should be good with your engine. My 406 puts out around 570 hp and the single throttle body set up worked great but I switched to a tunnel ram dual throttle body set up. I found that with a bigger cam/low vacuum engine the dual set up with the tunnel ram has better drivabilty than a single throttle body set up and has incredible throttle response. It also looks real cool. I just bought another tunnel ram intake for the 383 in my Camaro. You wont get OEM drivabilty with a big cam/low vacuum engine but it will be close. Your setup is on the mild side, displacement vs cam wise and I think it would work great on your engine. The self tuning feature works great, the more you drive it the better it gets and there is some fine tuning that you can do as well. It does turn a fussy carbed engine into a very satisfying drivable engine, easy starting hot or cold.

I would go with the new Holley systems. They are as easy to use or as complex as you want to make it - the choice is there for you. Plug and play.

Another vote for the Holley. Good stuff!

Search through this section and you'll get tons of info.

http://i318.photobucket.com/albums/mm436/540Hotrod/555EFI.jpg

JIM

Thanks for the info, will check Holley out always think of them for carbs. I guess none use the edelbrock system. Fast might be the best way because I have seen some good results from individuals using there system. It would be nice to have a bigger system, but if I race it at all I dont want it to go to fast where I would have to install a roll bar.

540 Hot rod, how hard was yours to tune.

Here is my motor now just have to decide what injection.http://i942.photobucket.com/albums/ad268/tvsteve/DSC01270.jpg

Tuning is easy. There are a list of *base* tunes in the program to get you close based on cubes/HP and cam, N/A or boosted etc etc.

You set up the basic parameters and fire it up. I literally did mine on the dyno. We ran it with my carb setup I had used for years and then stuck the EFI on. In about 10 minutes of part throttle running and light pulls it was where my carb took me 10 years to produce. You can also bolt it on and go drive it so it *learns*. From there you can keep letting it self learn or you can go in and manually tweek any parameter you want. Very user friendly and works great. After the dyno runs I stuck it all in the car and fired it up at 3am in the morning. Slept a few hours and then hit the road for a 2500 mile road trip to South Carolina. Left home without even a trip around the block and it ran perfect.

JIM

540 hot rod What you have told me sounds great can you tell me the part number you got for your engine and how much power you are making compared to my 540. Was that on your corvette that ran in the 9s I saw a video of your vette very impressed.
Thanks

Yes...it's same car. Made a few changes during the last freshen up plus the EFI. Hoping to run a little better when I get to the track again.

Mine makes in the 880'ish Hp range on pump gas.

One of the base tunes is a 496/650 HP setup that is a great baseline to start with. It will take care of itself based on O2 sensor readings.

Mine is the Dominator HP. Likely has more features than you need..but the regular HP version will do just about anything you want. Mine is basically 550-838 version with the 2000 CFM throttle body. I have 66lb injectors. Then it has the Dominator HP ECU instead of the regular one. I also have the DIS ignition system that is fully programmable. You can put together the system many different ways. I'd reach out to DougF here on the Forum. He's the brain behind the whole system and can surely guide you to anything you want. Of all the systems I've studied up on, this one has the capability to do things the best it seems. I ran the throttle body set at 1 to 1 where all 4 blades cracked open at once and the thing had incredible throttle response.

You won't be disappointed with the Holley setup I can assure you. You might be happy with the 4150 version with the 1000 cfm throttle body to use stock air cleaners. Another buddy has that system on a 400 RWHP 454 and it runs killer also. It can handle from mild to probably 650 HP or so at least.

JIM

540 hot rod What you have told me sounds great can you tell me the part number you got for your engine and how much power you are making compared to my 540. Was that on your corvette that ran in the 9s I saw a video of your vette very impressed.
Thanks

I reccomend this system, as I am running it:

http://www.holley.com/550-831.asp

I'm not making Jim's power, more like 600hp/tq. I am still in disbelief in how good this runs...razor sharp, easy to install and get running.

Vince did a fine job of detailing his Holley Avenger installation here:
http://www.chevelles.com/forums/showthread.php?t=326671

I bought the Avenger also, but have yet to install it. Honey-Do list isn't done yet! Wait a minute...IT'S NEVER DONE! Dang-it!!!!

I recently installed the new Holley set up and am very happy. I cant say it is better or worse than FAST or Edelbrock as I have no experience with them but it did install and start up painlessly. Cold start is amazing and it tamed my 5sp. I am not very computer savvy yet the software is friendly enough I can understand it.

Thanks for all the info on what fuel injection to use. I have called tech support on three systems Edeldbrock, Holley and FAST. Never got thru to Edelbrock or Holley they said leave a message and they would call me. Edelbrock did call me back two days later Holley never did, BUT FAST I have talked to there tech every day to ask questions. I think I'm going with FAST. With out good tech support no system is worth a darn. I would like to ask one more question. Does anyone have any input on what size fuel line to use for a 600HP BB Edelbrock and Fast says to use a 3/8 line with a 255 litre per hour pump. Any body use this size which is a -6an

-6 feed and return which is 3/8.

I used the fuel line kit supplied by fast which is 3/8 in. If you do go with FAST feel free to contact me if you have any questions. Any system you use will be a big step forward from a carb.
Steve

[QUOTE=TV Steve;3021151]Holley they said leave a message and they would call me./QUOTE]


Don't give up on Holley just yet....you just got some contact with the Holley guy. Doug hangs out here a lot and can help you out if there are any issues.


JIM

I'll be happy to answer any Holley questions you may have.

I have a FAST XFI red box controller, Edelbrock Pro-Flo XT intake manifold and rails, and a Texas speed 102mm throttle body (single blade). I am building a complete car though, so only time will tell when it gets done.

The intake manifold is taking months to get here. Should be here in the next few weeks. Much much later than the October date I was told.

If you plan to go with an "e" transmission on down the road, keep that in mind when deciding on the engine fuel management.

Dennis can help you also with Holley stuff for sure. He's deeply involved with the product.

JIM

If dennis is on can you confirm what holley says to use for a 600hp 598 tq bb very mild cam 560 lift 248 duration at @50 112 overlap I still haven't made a decision yet I don't want to replace my manifold see pic above in thread it has a edelbrock air gap and I'm not going to race (well maybe once a year) I just want a very dependable fuel injection that has a computer that will trouble shoot it self. I believe I want to keep it simple and drive ability better than a 950 race carb that I have now.

For a TBI system...the 900cfm unit with 85lb/hr injectors is what's required. It's offered in both Avenger and HP EFI systems. (Avenger includes handheld programmer and fuel pump) I'm not sure what you refer to as "troubleshoot" itself. The Holley unit displays basic errors like rpm/sync issues, WBO2 faults etc.

550-402 Avenger
550-412 HP

Aside from the above info....I would also recommend upgrading to late model HEI distributor for full ECU timing control. This will also help with idle and driveability.

You can find more info...http://mooreracecraft.com/fuelinjection.html

Thanks for all the feed back. When referring to a distributor that has a computer control I have a MSD HEI unit it should work with one of the computers?

Thanks for all the feed back. When referring to a distributor that has a computer control I have a MSD HEI unit it should work with one of the computers?

A traditional MSD HEI (advance weights/springs) can work with the system. It would work as normal where the weights/springs control the advance curve. Set base timing and weights, springs and vacuum can control advance. You would simply use it to supply the ECU with RPM signal.

The other option is a "late model" GM HEI which does not have any weights or springs inside. The small cap version was used on 87-95 GM applications specifically for use with EFI (MSD replacement is PN 8366). This unit has an ignition module inside commanded by the ECU's timing table and offers more contol over timing adjustment. You "type" the desired timing in areas like idle, cruize, wot etc. With this type of control you can have say 25* timing at idle, 42 at cruize and 36 total.

EFI (although referred to as Electronic Fuel Injection) does much more than just control fuel injectors. As stated, it also can control things like timing, efans, idle speed etc.

Lots of issues with the MSD 8366. Better off getting a stock late model distributor.