© Copyright 1995 thru 2008 - The Mustang Works™. All Rights Reserved.
MustangWorks.com is designed and hosted by Aero3 Media.
MustangWorks.com is designed and hosted by Aero3 Media.
12-08-2002, 11:49 AM | #1 |
Registered Member
Join Date: Jan 2002
Location: LEXINGTON S.C.
Posts: 30
|
Speed Density Questions knowledgable tuners needed
I recently purchased an 88 LX 5.0 from a transplanted Yankee. He had to sell it cuz his homeowners association wouldn't let him have more than 2 cars in his yard.1 owner bone stock, and in very good condition(interior brand new,everything works nothing broken). 1800 dollars seemed cheap to me!It runs and drives fine but I would like a little more power/sound.I intend to add :shorty headers,x-pipe,Flowmasters,Pulleys,phenolic spacer,Remove smog pump and intake silencer,3.73 gears,adj clutch cable,Cold air intake,new ignition,plugs,wires,coil,bigger fuel pump and pressure regulator,and a 70 mm throttle body. I do not want to open the engine in any way(yet) cuz it runs really goood and only has 88,000 miles.My question is the speed density system, I keep hearing that it needs to be changed over to mass air. WHY? It runs really good and I can't seem to justify the expense.Will it not work with the add ons I am considering.The only other things I might ever do to it is change the heads and the cam. I don't want to go to bigger injectors or change over to mass air. It is only a street driven car(I only drag race import bikes). And besides if I get the bug I have a 4 cyl body and 460/C6 sitting in the corner just waiting for me to get the time to mess with. I don't want to affect the streetability of the car cuz I don't intend to take it to the track anyway.
Is there anything else I can do to improve the performance,besides those I listed ( and that don't require opening the engine)and are any of them (that I have already chosen)not worth the trouble.Thank you in advance. |
12-08-2002, 11:52 AM | #2 |
Registered Member
Join Date: Jan 2002
Location: LEXINGTON S.C.
Posts: 30
|
almost forgot about how much Hp did the average stock speed density car make and how much do you think that the mods I am considering will increase my HP/TQ.
|
12-08-2002, 12:28 PM | #3 |
Registered Member
Join Date: Apr 2002
Location: Kingston, Ontario
Posts: 351
|
for what you want to do the speed density is fine. I actually think it is better for your application because you don't need it and it's less things to worry about. Once you start adding a lumpy cam, heads and bigger injectors the mass air can better manage the engine.
Wait till Dark_5.0 or 88workcar come in here to give you more advice. They both still have speed density and are pretty quick. 88workcar runs 12's The 88 5.0 stock was rated at 225hp/300tq. I think your list of upgrades looks pretty good. It is definately a good start. If you plan on driving the car hard and maybe powershifting at all I would look into an aftermarket shifter. I have the pro 5.0 and it gives the car a whole new feel when I'm banging through the gears. The steeda tri-ax is also another great piece.
__________________
'88 lx, Black on Black, check it out here Spent all my money on school, what a dumb mistake I'm old enough to know better, but still too young to care. |
12-08-2002, 01:22 PM | #4 |
Registered Member
Join Date: Jan 2002
Location: LEXINGTON S.C.
Posts: 30
|
BTW where should my timing be on this engine? ( It will be daily driven and probably on 87 octane)
|
12-08-2002, 02:17 PM | #5 |
Registered Member
Join Date: May 1999
Location: Wood Ridge NJ USA
Posts: 341
|
I would think about adding subframe ctrs. In my case the car wasnt faster but it sure felt faster. One of the better mods I did without touching the engine.
Chuck88GT
__________________
So what if its "midlife crisis". Wife, 2 kids, busy job, "fixer upper" house, and I still have time for the Mustang!!! I Love my kids!!! |
12-08-2002, 02:51 PM | #6 |
Registered Member
Join Date: Jun 2000
Location: Tonawanda,NY
Posts: 71
|
sd'll work great w/stock cam and injectors
I'd go w/mac prochamber over x and keep stock throttle body and spend money on cobra intake, get some 1.7 roller rockers |
12-08-2002, 02:53 PM | #7 |
Registered Member
Join Date: Jun 2000
Location: Tonawanda,NY
Posts: 71
|
wow thats old sig, car has c4 w/Hservo, 3800 stall, E303 w/1.7's, 24lb injectors, nos 5115][, and its prolly slower n/a, 308 now, big and littles
|
12-08-2002, 03:21 PM | #8 |
Registered Member
Join Date: Apr 2001
Location: Staging lane
Posts: 4,337
|
Hey whats up, What you wanna do will work easy with speed density. Just one thing go with a 65mm TB instead of a 70mm, the 70mm is too big and will hurt your performance.
I have 65mm TB with 67mm egr spacer, ported GT-40p intake with a 3/8 inch phenolic spacer, Mac cai, ported polished and milled stock heads, E-303 cam, Aeromotive FPR, Jacobs ignition, 1 5/8 equal length BBK headers, O/R X-pipe with 2 chamber flows dumped, 3.73 gears and slicks, sub frame connectors. etc... All of that and my speed density works like a charm. My 88GT convertible went mid 13's before the cam and TB. I am dropping the engine in a 90LX and am hoping for mid 12's. Later,
__________________
92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer |
12-10-2002, 11:31 PM | #9 |
Registered Member
Join Date: Jan 2002
Location: Mt. Prospect,IL
Posts: 474
|
i put my 70mm tb and it seems to be running extremely strong now. Cant wait until i hit up the track. When weather gets nice of course
__________________
87-ford-mustang-SOLD! mods: 3:73's, off road h-pipe, b303 cam in gt- 40 motor w/ Power Plus intake, edelbrock 70mm tb & egr spacer, 72mm C&L, bbk long tubes, tremec tranny, centerforce dual friction clutch, upr and lwr CA's 255lph FP and soon more to come.... when i have money again SOME ADVICE Don't do burn outs in reverse it is very expensive New times with dead hook on dr's 13.27@103 with 2.0 60 foots w/100lb system Fastest time to date: 12.8@113 |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Speed Density info needed | bircky311 | Windsor Power | 3 | 02-20-2003 01:59 PM |
24lbs injectors and crower 15511 on speed density | Yan88gt | Windsor Power | 9 | 03-19-2002 10:16 AM |
First ticket. Sucks, sucks bad. | zepherman | Blue Oval Lounge | 46 | 12-16-2001 07:24 PM |
EFI conversion with Speed Density and a 351w? | PSI GUY | Windsor Power | 2 | 12-02-2001 11:13 PM |
speed density question.. | bobtodd | Blue Oval Lounge | 2 | 04-15-2001 02:03 AM |