I am in the process of replacing my stock short block with a built lower. Unfortunately, I don't think that I have all the funds required to do every thing I want.

My plan will eventually include stage 2 heads/cam, blower upgrade (ported, MP, KB, Whipple? - don't know yet) with about 16-18 psi, full exhaust, datalogging, 60# injectors and a bigger MAF.

For now, the built lower is going to be paired with (gasp!) stock heads and cams, and either a stock or ported Eaton and stock manifolds and cat-back with high flow mids.

The things I am already trying to put in place on my 02 are:
Built lower (identity withheld to keep thread from flames)
new OEM gaskets, OEM timing components etc.
ARP Head Studs
dual Walbro 255 lph fuel pumps
possibly injectors (50, 55, 60?)
possibly fuel rails (OEM 97 + reg.)
5# pulley
tuning (see built lower above)
Raptor Datalogger

OK - now the questions:

With the near stock setup, should I just stick with the 42# injectors or go ahead and add the safety factor of the larger ones?

Would the injectors needed for the final be too much for the interim?

Will the pump upgrade by itself be enough 'extra' for safety margin?

What MAF would be recommended to the 'final' product? I've seen the Pro-M 92 (not much bigger than stock, lots of people replacing them with ?), the SCT Big Air and reference to a 108mm MAF (that I know nothing about).

I hate buying the same thing twice in various sizes - If I could throw that money away, I would just do the whole shebang to start with, but I can't.

Thanks, - I've got a couple months to get everything lined up, so I want to be sure EVERYTHING is ready. Sorry for the "War and Peace" above,

Herb

 

Herb,

You can really go both ways with this. You can stick with you stock MAF, Injectors, and pumps untill about 480-500 HP. But I see you plan on making more power in the future. You can put the injectors, pumps, and bigger MAF and have it tuned for that so you can grow into your setup. Or you can hang on to that stuff and do it all at once. I would say hang on and do it all at once and this should help on labor and dyno costs.

For the power you plan on making this is what i would do...

Walboro 255 pumps
60# injectors
SCT 2400 MAF
JDM 108mm power pipe
Rails and adjustable regulator (optional but if you want over 580 or so I would highly recommend)

Our 108mm tube is a new product that we have been using for about 6months or so. We run these on all of our high power trucks (475+) and with the SCT maf (500+) This tube was designed to increase the airflow that passes the MAF. We have never hit 5 volts with it ( up to 800 HP). It has no bends or restriction points. Also its a very sturdy peice and fits better than any other.

Hope this all helps!

JimIII@JDM

 

This is the power tube on our MLNIUM race truck!

 

Save yourself a couple of hundred bucks and bag the bigger maf and intake tube for a maf extender (100 bucks) and a good tune.
Stock fuel rails will work fine as well.(more money saved)
Later...

Bruce

 

Id get a set of 55's , pumps, and a sct maf but that depends on the use of your truck and what you want to get out of it

 

Thanks for the input so far...

LMR2 - I use the truck as a Daily Driver with about 1k miles per month and a weekend dragster at the local 1320. I'm a bit torn on the injector size - there is so little cost difference between 50-55-60 (compared to the actual full cost of each), it seems to make sense to go with what I'll eventually need. But, that's why I'm looking for opinions and guidance - Thanks!

Jim - Thanks for the info and the pictures! I'm already on track with the pumps - they'll be here Friday. As for labor, it's all my own blood, sweat and tears, but good thoughts on the dyno time.
On the Power Pipe/SCT 2400 - is that an "either/or" or are they used together? In the pictures, it looks like the MAF housing is integrated with the Power Pipe. Are these babies on your website? I haven't seen them yet, but I've not dug very deep. Is there any improvement to be had using this prior to upgrading my heads or will the stock 90mm be OK?

I guess my main worry is whether the 42s plus pimps will keep my new motor alive until I do heads,cams and injectors later.

Black 2000 - I've seen very little about the extender, but I've always been leary of 'band-aids' (no offense meant here - I don't know enough to fully classify this device). Are you running this guy and, if so, what has it done for you? I'd love to save as much $ as possible, but not at the possible expense of a $4000 motor.



This may all be moot - I still need to pull the heads and see the carnage first-hand. If there are damaged valves or any other problems with the heads, there is not point putting the back on stock...

Stage 2 heads/cams will AUTOMATICALLY equal bigger injectors and MAF for me, even if it means the truck is down for a few months while I gather the funds - I'm only blowing one motor in this dog.

Thanks all,
Herb

 

Herb

I happen to know where you can pick up a set of flow matched 50lb injectors, with less than 1000 miles on them, if your interested

 

Gator,

Send me an email if you don't mind.

herbsROD@satx.rr.com (drop the rod, I did)

If the price is good, that may help ease the distance between where I am and what I want.

How's the truck feeling? I can't wait to hear the numbers that thing lays down.

Thanks,
Herb

 

MAF ext is not a band aid. The stock MAF flows enough air to run 9's, just ask JL. The MAF ext allows you to tune your A/F correctly and thats all the bigger mafs do as well.

Mustang guys have been running Mafterburners for years with no issues and this is very similar.

dont be talked into spending hundreds of dollars that you dont have to.

check out mjchip on modularfords forums, he knows alot more about fuel supply systems than *** does.

Later...

Bruce