I was just wondering what you guys think about this combination. A crate engine from Scoggin Dickey ( SDZZ465B ). This is a 350 that is putting out 465hp. It currently has an Edelbrock Performer RPM Air-Gap intake for the fast burn heads on it. I plan to use a Mini ram in its place with a Holley 58mm throttle body, and 37 lb Racetronix injectors. I was thinking that the Mini ram would flow more air than a high-rise dual plane intake, but maybe I’m wrong. The bottom line is that I have already bought everything, and was going to us Ed Wright to burn a custom chip. After contacting them I was told that they wouldn’t burn a chip for it because they had never worked with the Racetronix injectors, and had no idea how they would react. I was also told that if I used a Mini ram on this engine that I would be lucky to get 350 hp out of it because the carburetor set up would always make more horsepower than fuel injection, and due to the fact that the computers in our cars are extremely slow. So what do you guys think? Any idea of about how much power I would be putting out? Should I just go with DFI? I mean I’ve just spent about $12000 on everything I’ve bought so how much more could DFI hurt? And yes, I am aware that going the Ed Wright route may not be the most popular, so I’m ready for your comments on that too. Go ahead and lay it out there. Seriously though, any input is greatly appreciated. Thanks.

1) You should have discussed the combo on TGO before buying.
2) You won't get miniram on top of those fastburns without custom drilling.
3) You will make as much power with miniram if you have a good tune, but I would have personally just stuck with a carb.
4) Not knowing how injectors will react??? Haven't heard that one before.
5) If you really want miniram, get the equipment to tune it yourself, or get a dynotune.

The Miniram III was designed to bolt right up to the Fastburn/Vortec style heads.

Why go with Racetronix injectors? Just go with the SVO injectors.

Depending on your cam, you could use a GM SD ECM to control it. Ed Wright could better advise you on your ECM choice...but not assume that you need to go with the expensive aftermarket ECM solution

1) I have spent many hours searching, and gathering info, but I guess I should have seen what you all had to add because I'm sure I would have gotten many useful inputs.
2) I have the Miniram III that was designed around the Fastburn / Vortec heads.
3) I was under the same impression, but the guys at Ed Wright's insisted that I would be way down on power over the carb setup.
4) Me either
5) The plan was to use them for a starting point, and to dyno tune from there. I have scanning software and the equipment to burn chip, but I'm not very good at it. I also don't have very much patience, and I with my luck I would really mess something up. I would rather not take a chance given the amount invested, know what I mean?


I like the disk style injector over the pentile design. ( Just my personal preferance)

The cam is GMPP #12370847 the duration numbers at .050" are 234/242. The heads have been worked so that I can run 1.6 rockers with this cam, and the lift comes in at .575"/.595" on an 112 LSA. Ed Wright didn't suggest DFI. I brought it up because I was wondering if that would be a better option for me. To be honest I really haven't researched DFI or any of its alternatives yet.


Thanks for the input. Anything anyone can offer is appreciated. When I have more time I will list everything in my combo as well as everything else that has been done to the car.

Thanks again.

I can't understand how anyone would think that a Miniram would limit HP to 350...hell, the stock TPI setup would get you close to that. You would think that

As for the OEM computer setup...if you have a GM SD or MAF setup, it isn't rocket science to tune.

If your current car is set up for a carb, then you may consider keeping it due to EFI conversion hassles. However, I would recommend that you go EFI for power and drivability.

As for tuning, as long as you have a WB o2 sensor, you really can't go wrong

Isn't it odd that a STOCK 500+HP LS7 doesn't use a carburetor?

http://www.rsportscars.com/eng/cars/corvette_z06.asp

Fastchips isn't the only place to get tuning help, after all. When someone presumes to tell you or implies that they know everthing there is to know, run away. Very, very fast. You may end up going back, but you would do so with a far better education and understanding.

The 30# Ford injectors I bought a few years ago are disc style. I forget what the deal was, but IIRC everything 24# up they went to a disc design.

OK, here is the full set up.

- '91 Z28
- 465hp 350 (as described above)
- Comes with 1.6:1 full roller rockers
- I am changing the single timing set to a double roller
- I am changing to an ATI dampener
- All other changes are cosmetic except for changing the oil pump drive to an ARP solid steel one, and going to an ARP oil pump stud. I will also check the clearance on the oil pump pick up, and check the torque on all fasteners.
- TPIS Miniram III
- Holley 58mm throttle body
- Racetronix 37 lb injectors
- MSD ignition
- Pro billet distributor
- Coil
- 6AL
- Plug wires
- All accessories are new. I bought the complete serpentine setup from GMPP. (That's another story, but I'll tell you if you want to know.)
- SLP 1 3/4" coated headers (w/o AIR)
- Flowmaster American Thunder cat back (no cats)
- T56 six speed
- SPEC stage 3 clutch kit
- SPEC billet flywheel
- Hurst shifter
- Aluminum driveshaft
- Rear was completly rebuilt this past summer. 4.10:1 gears and a TA performance cover were added. A 12 bolt rear will be added soon.
- 1LE brakes
- Strut tower brace
- Spohn adjustable steering brace
- Hotchkins tie rod adjuster sleeves
- Detroit speed and engineering steering box
- Flaming river steering shaft
- Entire suspension was rebuilt this past summer using componets from Moog and Energy Suspension. Including motor and transmission mounts, and upper strut mount plates.
- Lakewood rear control arms
- Adjustable panhard bar. I think it is Lakewood, but I don't remember.
- Subframe connectors
- KYB shocks and struts
- Spohn crossmember and adjustable torque arm

That's all I can think of right now, but it wouldn't suprize me if I'm forgetting a few things.

The engine that I'm taking out is the stock L98 shortblock with Vortec heads. (The heads have had some minor bowl work) SDPC Vortec TPI base. SLP runners that had to have a lot of work done to them. ZZ4 cam. Full roller 1.5:1 roller rockers with LT4 springs. It has 22 lb injectors with a Holley AFPR, and the stock 48mm throttle body with an air foil. I have burned a few chips for it, but like I said before I'm very inpatient.

Now that you've seen my entire setup should I go ahead and use DFI or should I go the custom chip route? Are there any advantages to DFI over a properly tuned custom chip? Anyone know of anywhere I can have the car dyno tuned in the Seattle area? I'm willing to go a few hundred miles if need be.

Thanks for any input. (Assuming you haven't fallen asleep on me.)

Did Ed Wright tell you this?....

Yeap

Simple, they don't sell it.

Ford Bosch SVO EV1 injectors are pintle type.

a mini ram on top of that with that cam should make power to 6800-7000rpms LOL

and i would bet that it would be dang near 460hp+ out of that setup. i think those fastburns should be close to that. car craft or hot rod did an article on that miniram III and fastburns and made 450 hp with alot smaller cam. i will try and find it

here it is

http://www.carcraft.com/techarticles/56118/

they used a ZZ 409 cam with 226/226 duration and .520 inch lift with 1.5 rockers.

your cam is a ton bigger and they made 451 hp on that 409 cam.

_

good point. i didnt think of that.

One reason the magazine builds always seem to put out good numbers.

how much would you expect to lose? 20 horses?

_

I actually had the Car Craft article in mind when I went the route I choose. From what I've read a lot of the LT1 guys are making around 400rwhp with this cam and minor port work on the heads. I think the biggest number I saw was 412rwhp. I have since been informed of a guy in my area that can do a dyno tuned custom chip for me. After he is finished we'll all know how much power this combo will make due to the dyno runs. I forgot to post this earlier but I'm not running AIR, a Smog pump or any cats, and obviously no EGR (Miniram). I do have a full set of accessories other than that, including an AC compressor. Thanks for the replies.

Interesting. Then they must be playing hide the pintle these days as opposed to earlier designs.

Also interesting that they used a 58MM throttle body for the test. Allen