375 to 400hp combos - Mustang Evolution

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Old 07-07-2013, 06:54 PM   #1
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375 to 400hp combos

What are some proven combos that will make 350 to 400hp Na. The juice my last option.
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Old 07-07-2013, 07:14 PM   #2
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On a stock 302 rotating assy 330 to the wheels is about as good as you can get. But there are a zillion combos that can get there easy once you get into the bottom end.
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Old 07-07-2013, 07:17 PM   #3
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330 to the wheels is how much to the crank
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Old 07-07-2013, 07:35 PM   #4
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What are some proven combos that will make 350 to 400hp Na. The juice my last option.
I have a 302 bored to a 308 and with my combo I dynoed 310 rwhp

---------- Post added at 06:35 PM ---------- Previous post was at 06:34 PM ----------

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I have a 302 bored to a 308 and with my combo I dynoed 310 rwhp
The guy at the speed shop told me I'm around 375 - 390 HP at the crank
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Old 07-07-2013, 07:53 PM   #5
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Heads cam intake injectors?
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Old 07-07-2013, 08:00 PM   #6
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Heads cam intake injectors?
Edelbrock RPM Heads
Edelbrock Performer intake ported & polished
TrickFlow stage 1 cam
Trickflow 1 inch intake spacer to clear valve covers
1.7 rocker arms
30lb injectors
SCT 90mm MAF
75mm throttle Body
Stock pulleys
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Old 07-07-2013, 08:11 PM   #7
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Will that run 12s in the quarter
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Old 07-07-2013, 08:13 PM   #8
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You don't need even 300whp to run 12s in the 1/4...

Sounds like you have a stock motor, you have 2 options really. HCI or Supercharger. Both will cost about the same but you'll be up 80-100whp with the Supercharger and still get stock driveability and mpg. Also depends on what else has been done to the car "bolt on" wise.
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Old 07-07-2013, 09:05 PM   #9
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As of now I have stock motor. Gt 40 heads performer intake mild crane cam x Pipe
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Old 07-07-2013, 11:34 PM   #10
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B cam, afrs, maf, gears, injectors, you are gtg.
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Old 07-08-2013, 12:34 AM   #11
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Well if that's the case just do the bolt ons and supercharge it. No need to do another set of heads when the GT40s are on there and a supercharger can max out the stock block anyway.

What cam is in there and did you do the install or was it done by a previous owner?
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Old 07-08-2013, 07:49 AM   #12
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Previous owner installed crane cam. What is a nice setup for nos
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Old 07-08-2013, 02:13 PM   #13
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Ugh, its Nitrous or N2O, not "Naaawwwss". NOS is a brand of Nitrous. You need enough fuel to support your selected nitrous kit and a good nitrous tune. Run 125-150 shot and you're good. Just remember all the power in the world won't help you if you can't put it to the ground. If you are on stock suspension and stock size wheels/tires you're just going to spin the tires and not run the times you want.
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Old 07-08-2013, 02:17 PM   #14
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Ugh, its Nitrous or N2O, not "Naaawwwss". NOS is a brand of Nitrous. You need enough fuel to support your selected nitrous kit and a good nitrous tune. Run 125-150 shot and you're good. Just remember all the power in the world won't help you if you can't put it to the ground. If you are on stock suspension and stock size wheels/tires you're just going to spin the tires and not run the times you want.
What about stock pistons ? Won't nitrous blow them out?
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Old 07-08-2013, 02:25 PM   #15
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Hell no. The rotating assembly in a 5.0 isn't the weak point at all, the block is. If you blow up a piston you didn't have enough fuel or your tune was ****.
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Old 07-08-2013, 04:32 PM   #16
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But nobody has given me a proven 350 to 400hp combo NA
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Old 07-08-2013, 05:21 PM   #17
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Uh, White94 did and so did I. His combo dynoed over 310whp and I told you to just throw a supercharger on it and you'll make enough power to max out the stock block. Nobody is going to just hold your hand through the exact combo you want, o some internet searching and use Google. There are a TON of Mustang forums and the "what do I need to get X hp" is the most beaten to death topic there is.
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Old 07-08-2013, 05:27 PM   #18
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347 or 331 stroker afr 205 heads and a performer II intake or trick flow track heat or just a really good flowing intake to match the heads and a custom grinded cam would be your best bet but you could probably use a trick flow stage 2 cam and with the right supporting mod you'll be over the 400hp mark with a 347 stroker but if you have a set of gt40 heads on it an you are 100% sure there gt40s I would just buy a used vortech supercharger and rip that thing to the mid to low 11s
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Old 07-08-2013, 05:29 PM   #19
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347 or 331 stroker afr 205 heads and a performer II intake or trick flow track heat or just a really good flowing intake to match the heads and a custom grinded cam would be your best bet but you could probably use a trick flow stage 2 cam and with the right supporting mod you'll be over the 400hp mark with a 347 stroker but if you have a set of gt40 heads on it an you are 100% sure there gt40s I would just buy a used vortech supercharger and rip that thing to the mid to low 11s
I was thinking this too. Unless he did the install the previous owner could have told him anything. A cam you can kind of tell if its not stock but not always and in that case I always assume stock even if the guy has a cam card. You can get a cam card anywhere...

GT40s are easy to spot though, the head will say "GT" or "GTP" if they are P heads. There are also the bars on the front of the heads but they can be hard to see behind the accessories/brackets.
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Old 07-08-2013, 06:57 PM   #20
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Originally Posted by scottydsntknow

I was thinking this too. Unless he did the install the previous owner could have told him anything. A cam you can kind of tell if its not stock but not always and in that case I always assume stock even if the guy has a cam card. You can get a cam card anywhere...

GT40s are easy to spot though, the head will say "GT" or "GTP" if they are P heads. There are also the bars on the front of the heads but they can be hard to see behind the accessories/brackets.
Yea because iv seen to many people selling moded foxes that sounds good when you talk to them on the phone but then when you go look at it half the sh** there saying is on the car isn't haha
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Old 07-08-2013, 07:12 PM   #21
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But mike if I where you I would look to see if there gt40s and supercharge it like Scotty said you can make more power then the block can take I wouldn't go pass the 450rwhp mark my self but there's people that have mind you they don't last long most of the time and if your only going for 12s the gt40s and some 4:10 gears and suspension mods will get you there and if you wanna run n2o run a 150 shot my dads old gt40 set up with a 150 shot did 11.6x with 4:10s and southside lift bars just the lowers but they don't sell them any more umi sells the same lift bars as they did I'm going to be running them in my
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Old 07-08-2013, 08:16 PM   #22
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Hell a bolt on 5.0 with a 125 shot is a 12 second car easy.
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Old 07-08-2013, 08:35 PM   #23
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Hell a bolt on 5.0 with a 125 shot is a 12 second car easy.
Now I messed up on my build, I originally was only doing a HCI swap and when we pulled my motor and broke it down my stock block (150,000 miles) was in bad shape. I didn't have the money at the time for an aluminum block so I ordered a 308 block from Latemodel, now will a 6-8psi Vortech SC on a safe tune work ? I think with a 6-8psi setup it'll put be around 390-400rwhp ? I don't drive the that much, I'm lucky if I put 1,500 miles a year on it!
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Old 07-08-2013, 08:42 PM   #24
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So I'm going for gt40 ported and polish heads edelbrock performer Intake. 3.73 gears 75mm tb and a 150 shot. Is this a good combo? What injector size should I use? And what kind of power do you all think this will make?
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Old 07-08-2013, 09:15 PM   #25
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So I'm going for gt40 ported and polish heads edelbrock performer Intake. 3.73 gears 75mm tb and a 150 shot. Is this a good combo? What injector size should I use? And what kind of power do you all think this will make?
Sounds good a wet shot is what I would go with and 24# should be fine on a wet kit but I would just get the gt40s cleaned up I wouldn't get them ported you can but I would just save the money and for HP I don't really know I just know if your a good driver you should be able to hit 11s with that set up with the right tire and suspension
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Old 07-08-2013, 10:29 PM   #26
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Porting GT40s is a waste of time and money. Unless you are doing it yourself and are good at it or have a friend who is and works cheap/for beer.
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Old 07-09-2013, 11:19 AM   #27
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I'm pretty good at porting so ill stick with that setup until I can afford afr heads
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Old 07-09-2013, 11:49 AM   #28
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I'm pretty good at porting so ill stick with that setup until I can afford afr heads
You'll find if your using a flow bench that it's really easy to get the exhaust ports flowing better it's kind of a bit** to get the intake side flowing good but with a 150 shot you'll want some good exhaust flowing numbers
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Old 07-09-2013, 11:57 AM   #29
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Porting GT40s is a waste of time and money. Unless you are doing it yourself and are good at it or have a friend who is and works cheap/for beer.
I like "beer". Lol.
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Old 07-09-2013, 12:47 PM   #30
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You can dip into 12s easy with a fox, slicks pulleys gears a mass air exhaust and bam .....
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Old 07-09-2013, 07:24 PM   #31
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I go 94. What do you think my times will be with that set up
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Old 07-09-2013, 08:46 PM   #32
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I go 94. What do you think my times will be with that set up
Basic bolt ons with slicks being the key factor in the mid 13s is what I see
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Old 07-09-2013, 09:49 PM   #33
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From what I gather he bought the car being told it has GT40 heads/crane cam and the intake will be obvious. I am very sketch on that being true since it doesn't seem he knows what cam he has in there. The previous owner should have known exactly what cam it was going in. I know if I was looking at a car I was going to be driving and the guy selling said it had a cam but didn't know what kind I would walk away. GT40s are easy enough to verify just by looking at them though.

Anyway if there ARE GT40s, some kind of decent cam and the Edel intake then 12s are possible on street tires with a good driver and all the other bolt ons. Hell I've seen a 12.9 on a 94 Cobra with the stock longblock, every bolt on to include longtubes, 3.73 gears and a really good driver.
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Old 07-10-2013, 11:15 PM   #34
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I want a car that can compete. If not beat the 03 cobra srt and camaro on the strip
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Old 07-11-2013, 07:02 AM   #35
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I want a car that can compete. If not beat the 03 cobra srt and camaro on the strip
An 03 cobra with a few bolt one and a tune is a 425whp car easy. The f bodies also don't need very much to push 400+ to the tires. SRT cars are turds for the most part although they make nice numbers on the dyno. Someone will always be faster though. You'll see everything from guys in $50k vettes who can't drive for **** running 14s to a rat trap looking mulletmobile (iroc) running 9s.

With that said a 300-400 HP Mustang is nothing to sneeze at especially if you are a very good driver with a great suspension setup and sticky tires.
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