Well... I have a 93 XLT, with the stock 302. The problem is I put 33" x 10" Wide tires on it and I'm really feeling the performance hit. Basically I was wondering what you would all reccomend doing for some bolt performance parts to get my HP back up?

I've been looking at K&N Filtercharger kits, new intakes, new exhaust, chips, new cams... what's a good place to start? and about how much money am I looking at spending?

Also is bolt really the way to go, or should I start with swapping motor and such?

Let me know I could really use the help. Thanks!


*SMC

------------
1993 Ford Bronco XLT
302 EFI, No Modifications yet.

 

first thing to do, if you haven't already, is change the speedo calibration number. Not sure what it is for 33s, but if you search through the post on this site, there are instructions for changing the number, its really easy. One of those post should have the cal. # for 33s too.

 

Stay away from the K&N FIPK system. I don't think they are worth the money you are better off getting the K&N stock replacement filter.(same performance 1/3 the $$$). I'd definetly do a Catback Exhaust and an MSD ignition.
You may also want to consider a gear change(about $1500).By putting on taller tires you raised your gearing. Which is most of the power loss your feeling.
As far as Computer chips go they can help if your truck came with a crappy calibration from the Factory.I had a local shop(honest guy) tell me I would not see much improvement on my truck because I had a good calibration (one the factory got right) and to spend my money on other things.

Make sure you recalibrate your speedometer.It has alot to do with shift points on the automatic. But be warned it can only be programed 6 times.
Good Luck

Joe
94 Bronco XLT,5.8,E4OD,4" skyjacker lift,K&N FIPK,Custom SS Exhaust

 

Thanks for the info so far.... it bring up a few more questions.. like:

As for as the K&N Filter... did you notice a power increase? And as far as intake goes, what do you think about changeing the intake manifold?

Ok, next is the cat-back... should I go dual? how do you feel about flowmasters? And what about chnaging the headers?

Also I've been see'ing people talk alot about using a 65mm Throttle Body? I'm assuming this is a bit bigger then normal.. whats the story behind that?

And of course thanks so much for the help you've given me already... actually all of this work is going to get done very soon... I just had a minor accident in my truck this past saturday.. so all this work is getting done when it come back from the body shop..

I have a few pics from the accident: http://169.226.67.110/accident

I guess the last question for now is about chipping the truck... you said that it doesn't help that much if you have a good calibration to begin with... is there anyway to tell if its good or bad?

*SMC

------------
1993 Ford Bronco XLT
302 EFI, No Modifications yet.

 

Most folks gauge the performance increases by the seat of their pants. It's what we feel that important. Mufflers, headers, chips, air filters, will all give you SLIGHT performance increases. But your Levy's will never know you spent the $$$$.
The biggest performance gain that you WILL know it is to change the gears. I would suggest a set of 4:10's. You could go to 4:56's but at hiway speeds you are most likely going to have heat problems. Performance is like a woman- it costs money to play.

 

So you don't reccommend putting on, things like a new edelbrock intake... and thinks like that? Will I actually notice a difference doing any of this bolt on work?? or should I just scrap the whole idea?

Also how much does a set of gears cost, and I also assume this means I have to change the front ears too? How hard is it? Any change I could do it myself?

*SMC

------------
1993 Ford Bronco XLT
302 EFI, No Modifications yet.

 

Hey Bronco93. I put that aluminized Flow Master Duel exhaust on my 302 Bronco and I noticed A considerable change in performance. Not only does it have more pick up. But it sounds great too. I would not buy anything HighPerformance fro JCWitney but they have a good price on Duel exhaust. I purchased the flowmaster mufflers instead of the Annoying glasspacks..It was very simple to put on. Paint it before u install it ..

 

Things like manifolds and cams are great. I don't think anyone recomended them because you start getting into lot's of $$$.Your Computer is speed density and doesn't like major mods.
This doesn't mean you can't do it but you would need to convert to a Mass Air system and thats a lot of money.
If you really want to spend money do the gears 1st and if you still don't have enough power why not check into a supercharger kit. I've been thinking about getting one for my truck. Summit racing sells a Powerdyne kit for $2200 for our trucks that claims a 55% increase in power.

Joe
94 Bronco XLT,5.8,E4OD,4" skyjacker lift,K&N FIPK,Custom SS Exhaust

 

I would start with the gears first. You need to call around to see what the actual cost is going to be. In my area of South Texas, a gear change like that,using t-lock in the back and an open in the front would cost about 1200. at a reputable shop. You may find it cheaper in your area. Just make sure that the shop that does it knows what they are doing. After the gear set, then you can do the bolt-ons.The manifold is not going to do much unless you do the exhaust. Air in has to go out. An exhaust ain't gonna do squat unless the system on your truck is plugged up. Adding a performance exhaust on most engines results in a dramatic loss of low end torque. Right now, that is where your motor is running because of the bigger tires.

 

Ok do it looks like gears are the way to go... I think I may try doing that myself... any idea what a complete 4.11 kit would cost?

Also you mentioned that a dual would cause a loss of power if it wasn't plugged... what does that mean? should I add and intake, and and/or MAF to copmensate? would that help... and how much money does a new intake cost... Like the Edelbrock Performer Truck 5.0?

Also thank you all so much for the help.. you guys really rock... its tough to get good advice... I wish there was some way I could pay you all back.



*SMC

------------
1993 Ford Bronco XLT
302 EFI, No Modifications yet.

 

Well I guess if U have EFI u could loose power with Duel exhaust.. I don't know what it would do to that type of system.. I prefere carb. on my motors. That fuel injection stuff gets expensive. If u had a carb it woud definatly help u to have duel exhaust.That is why i put duel exhaust on because i got bigger 33x10 tire/rims and kept my same gear ratio.I figure why mess with it? If it aint broke yet..LoL If you have the Ford 9inch you can replace the ring and pinion relativly easy. All u need is some standard tools,Impact wrench,Torque wrench,and a magnetic dial indicator. Which are not to expensive.

 

See now you gotta wonder.... should I switch to a carb... I may eventually put a charger on the motor also.... It seems carb'ed motors have more options for performance... like bigger corbs as far a cfm's go.. like putting on a 750cfm carb and a spacer, things like that... is it worth it to swith over?

*SMC

------------
1993 Ford Bronco XLT
302 EFI, No Modifications yet.

 

Well tat is up to u on how far u want to go. Fuel injection will get u a little better gas mileage. But from my point of view. I hate working on fuel injection systems. Especially when the computer is playing tricks on u. It would be wise to invest in a hand held read out with that newer stuff. As far as adding a bigger carb. U need the motor to be able to use the exta gas u are putting into it also. I guess your cheapest way out would be a gear change. It all depends on how much u are willing to spend. A lot of those ring and pinions u buy come with INSTRUCTIONS. One thing i like about my truck is the computer is only 25 dollars. Unlike my fuel ijected car which its computer is 300 rebuilt.

 

Well I'm one of those guys that can't walk into a parts shop and not buy something... its killing me... there should be a support group for guys like me... something gamblor's anonymous... But the problem I have now is I've got all the toys I can get out of PepBoys and AutoZone... now its onto the performance shops (Here's where the addiction grows)

I'm not rich... so money is definatly a factor.. but only a factor of time... I will eventually do everything I can... I am going to start with the speedo recalibration.. so I guess if anyone has the formula that would be great... I have 33x12.50 BFG's. And it looks like I'm off by about 11%, at 55mph, my speedo reads about 49, just under 50.

Then I'm gonna go with the K&N Filter, maybe take out the who air intake and go with a small K&N system... after that I guess the headers and dual exhaust comes next.... aside from the gear change, what should I do next, or should I do something before the other stuff.

Also what do you all think about used parts... is that a good place to find old equal length headers, intakes, and the like... what should I buy new, what should I buy used?

Also... I'm just wonder.. where are most of you from? I'm from Long Island,,, I live in Sayville, NY and go to school in Albany.

Maybe we can have abig bronco show someday

*SMC

------------
1993 Ford Bronco XLT
302 EFI, No Modifications yet.