5.0 mustang build up where to start

canukracer · 07-29-2003, 07:32 PM

would like some info on good bang for the buck addon's ,it's a 93 lx 5.0 with K&N filter ,3.73 gears, just put in an off road x pipe stock headers,was looking at an pro-m maf 77 and larger tb 65 or 70mm?can get gt40p heads for 412 each canadian dough, intake not sure of? cobra or trick flow street the cobra is old stuff hoping trick flow is better and it is cheaper too,ican swap my old 86 5.0 headers unequal set or should i go for an new equal set? i was saving a chip for last, brand? can i still make good power with the stock heads? thanks for any help this is a great forum for me it helps an old newbee

Nixon1 · 07-29-2003, 08:35 PM

The MAF and TB will be a nice addition for the intake side...not sure what sizes you should go for though... I'd probably get the 70mm throttle body. Heads will make a big difference, but they are pretty expensive. The stock heads will allow for a decent amount of power...but a board member on here told me he saw pretty good numbers running the stock heads, but heavily ported and polished....that's up to you what you want to do. I don't know how good the GT40p heads are....what are the valve sizes on those? Ideally you want 1.9/1.6, or 1.94/1.6 valves. My Performer RPMs work very well but at $1100 american for a pair..they aren't cheap. I've got a Cobra intake and it works pretty good but I'm sure the Trick Flow one is better. Like you said, the Cobra is old. Headers....all I can say is I'm prejudiced against shorties...unequals are much easier to work with. The equals might make more power, not sure..but they EAT spark plug wires for breakfast..if you go equal-length, invest in some boot protectors! I'd go with longtube headers though..they really are the best....and they'll sound good with a new set of heads. Heads tend to make shortie headers sound like crap...my exhaust sounds horrible now solely because of my equal-length shorty headers.

canukracer · 07-29-2003, 09:17 PM

think valve size is 1.84in 1.48 exhaust

Coupe50h · 07-29-2003, 09:22 PM

to anwer your question, yes you can go pretty fast with stock headers, i went 13.5 @ 100, but that isnt fast to me anymore

I always recomend subframe conectors to be installed on a stang as one of the first mods imo...

Nixon1 · 07-29-2003, 09:29 PM

13.5 at only 100?? Man, you hooked that thing up!!

07-29-2003, 07:32 PM	#1
canukracer Registered Member Join Date: Jul 2003 Location: alberta canada Posts: 108	5.0 mustang build up where to start would like some info on good bang for the buck addon's ,it's a 93 lx 5.0 with K&N filter ,3.73 gears, just put in an off road x pipe stock headers,was looking at an pro-m maf 77 and larger tb 65 or 70mm?can get gt40p heads for 412 each canadian dough, intake not sure of? cobra or trick flow street the cobra is old stuff hoping trick flow is better and it is cheaper too,ican swap my old 86 5.0 headers unequal set or should i go for an new equal set? i was saving a chip for last, brand? can i still make good power with the stock heads? thanks for any help this is a great forum for me it helps an old newbee

07-29-2003, 09:22 PM	#4
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	to anwer your question, yes you can go pretty fast with stock headers, i went 13.5 @ 100, but that isnt fast to me anymore I always recomend subframe conectors to be installed on a stang as one of the first mods imo... __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

07-29-2003, 09:29 PM	#5
Nixon1 Registered Member Join Date: Jan 2003 Location: Palm Bay, FL Posts: 432	13.5 at only 100?? Man, you hooked that thing up!! __________________ '91 Mustang GT 5.0 AOD Daily Driver Current stats: NEW 302 short block, E-303 cam (@.050, 220/220, .498/.498, 110 degrees), 1.6 roller rockers, Performer RPM heads (aluminum, 1.9/1.6, 60cc chambers), Cobra intake, Granatelli 75mm MAF, Billet AFPR, Equal-Length Shorty Headers, Off-Road X Pipe, Flowmasters, 4.10 POSI 13.73 at 103.8, ~2.2 60'

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07-29-2003, 08:35 PM	#2
Nixon1 Registered Member Join Date: Jan 2003 Location: Palm Bay, FL Posts: 432	The MAF and TB will be a nice addition for the intake side...not sure what sizes you should go for though... I'd probably get the 70mm throttle body. Heads will make a big difference, but they are pretty expensive. The stock heads will allow for a decent amount of power...but a board member on here told me he saw pretty good numbers running the stock heads, but heavily ported and polished....that's up to you what you want to do. I don't know how good the GT40p heads are....what are the valve sizes on those? Ideally you want 1.9/1.6, or 1.94/1.6 valves. My Performer RPMs work very well but at $1100 american for a pair..they aren't cheap. I've got a Cobra intake and it works pretty good but I'm sure the Trick Flow one is better. Like you said, the Cobra is old. Headers....all I can say is I'm prejudiced against shorties...unequals are much easier to work with. The equals might make more power, not sure..but they EAT spark plug wires for breakfast..if you go equal-length, invest in some boot protectors! I'd go with longtube headers though..they really are the best....and they'll sound good with a new set of heads. Heads tend to make shortie headers sound like crap...my exhaust sounds horrible now solely because of my equal-length shorty headers.

07-29-2003, 09:17 PM	#3
canukracer Registered Member Join Date: Jul 2003 Location: alberta canada Posts: 108	think valve size is 1.84in 1.48 exhaust