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8.8 or 9" rear?

13K views 319 replies 18 participants last post by  SimplyOrange 
#1 ·
Im lookin to get three things done by the end of this summer.
I want a "posi" or LS rear end. Ive seen alot of talk about the 8.8 in the V6 Mustangs but what about the 9"? Also which ones came with the Tlock or are they all this way? Details of what all goes into the rear swap would also be greatly appreciated.

Secondly, do they make long tube headers for the V6? Ive seen the BBK shorties but Id like to go with long tubes to keep my low end torque at its best along with a 2.5" w/ high flow cats and cherry bomb extreme mufflers.

Third. The transmission in this car seems a little shady at times (sounds like a very quiet/mild grind right after clutch engagement in second, I think its gonna go sometime in the next year) so Id like to install a better, stronger transmission. Ive seen built ones that are supposed to handle like 500hp. So whats a good transmission to go with, along with clutch kit and flywheel(since I might as well do it all at once) 5Spd
 
#214 ·
why did you delete this?
Well you tell me whats wrong.
11psi procharger guys are making like 320rwhp/330rwtq and 6psi m112 guys are making 320/410 ?!
Last I knew, the 6 psi on the 3.8's were making mid 200s, not low 300s. Then again, that's 2 year old information.
 
#221 ·
First off, thanks for this thread. I can't remember the last time I've laughed so hard at opinions being offered as fact. No way I'm going point out all the wrong info.


PureVenom said:
Last I knew, the 6 psi on the 3.8's were making mid 200s, not low 300s. Then again, that's 2 year old information.

I started mine N/A at 247/253. So if you need boost to get 200, someone messed up BIG TIME on their build.
Derrick made the numbers posted on minimal boost with the M112 set up. Gary made 660 at the wheels with 17 psi. The V6 motors flow air much better than what most are doing with both the 2V and 4V motors. Gary also used to run the F1 Pro Charger on his car, but it wasn't working out for his application. (A blower is only as good as it's application.)

A 500 hp V6 isn't in the 'big boy' V6 club anymore. The top runners are 900 flywheel right now. I'd put a bet that 1,000 will be within the year.
 
#224 ·
i know i line up with 500-600hp cobras on a regular basis,havent come across a v6 of that class YET.....cobras have already seen 1000 flywheel hp, no doubt you can make power with a v6, anything can be fast with money, i just dont see how an m112 eaton make so much power with so much heat, also i dont see how a v6 head can flow more than a cobra but a cobra blower makes more boost on a v6 than a cobra...id like to see flow charts to back that up, if not then ill strap some to a flow bench and see for myself, im all for making poower with what you have, in fact we are getting started on a turbo build for a customer and im extremely excited to see what it does, and possibly hurt some feelings with it, but i know its not going to make cobra power.and we are doing it with a intercooled turbo instead of a heat-soaked eaton.i may be stating opinions now and then but they are all based on facts from building and racing all different types of cars.
 
#227 ·
^^^ nowhere in there does it say it doesent exist dude, im building one for kyle as we speak(which is gonna skull-drag your eaton)....i just said they arent as common.go ahead and joke about the hood..if it makes you feel better. clearly its all the ammunition you have and you enjoy seeing other peoples things get destroyed,i will never poke jokes at the destruction of somebody elses vehicle... i have more time and money in my front end then you have in your entire car.and i dont pay people to do my work, that entire car was built by ME and ME only from suspension to engine work to paint.. it was all done by me, when somebody smashes your custom paint job imma lmao because you have to pay somebody to fix it, if i had the materials here right now i could have it repaired for friday..thing is i dont sweat little **** like that.so go ahead and play it out... because it doesent bother me.people like you get devistated over a small incident like that..bring your car her any time you are ready, and ill put money on the outcome.busted glass or not.i dont have to see out of the front glass to know where you will be:D but you gotta out-run my hemi first....

last time i pulled up next to a v6, i was looking through my side glass, only for a few seconds..then i was looking through the rearview mirror...never had a use for the windsheild anyways.

its not about expierience, its about what works...you just admitted people know whats easier to make power with and i believe you were talking about v8s
 
#225 ·
So because YOU haven't seen a pic of one OR pulled up next to one, it doesn't exist?

It's kinda hard to see what it is that you pull up to when your hood latch is touching your roof!

So I guess the 9-sec V6 isn't enough. HP is not magic, anyone can make it. It doesn't take 100 years of experience to slap together an already known power combination and get it to the ground.
I bash Rob for running IRS even though there is an IRS that runs 9's. Although I don't know if I believe it since "I've never pulled up next to it."
 
#226 ·
not saying it doesn't exist, a 600+ 9sec v6 or whatever, seems like that'd be an accomplishment and would be in SOME magazine or somewhere.... but.... i type it in google, and google's response is: LOL

yea, im sure there is something out there, but there's the delky turbo v6 here that is fast and in 10s, but i don't see this eaton crap, never was mentioned before except for a few little things but nothing with these high output horsepower motors.
 
#230 ·
I'll vouch for Gary's car. It should be back up and going here soon with the new tranny, just taking some time since he's remodeling the restaraunt right now too. As a matter of fact, I'm gonna go hit him up for some lunch, be back in a bit.
 
#231 ·
haha you guys crack me up.
Want to see them in magazines? Why? Maybe they don't need other people to tell them they are cool.
That "Delk tubro V6 running 10s" is a nine second car now that makes another 100 hp more than it did when MM/FF did the write up. If you cant' find it, maybe you need to learn how to use the internet??? (I'm just saying...) Try this: Matt's best was a 9.76@139 at one point. Then he started a different set up going again. Gary's car is putting down more power than Matt's now.. so it should be fun to see what times he lays down now.
Super Six had a write up on their coupe a few years back when it was a 10 second car. They started over and are going with a boosted set up now instead of spray. They also have a '79 coupe that will be an N/A car.

As for the M112 on a V6... we are seeing up to 18 rwhp per psi of boost on stock cars. (most see 15-16). With a good set of heads and a well matched cam, you only make it better.

For flow #'s being better than V8 cars - it's all in how you do it. If someone wants to flow test a test of heads, buy a set and see what they do. When Gary knocked out 660 rwhp with only 17 psi says alot.

Should we talk about Justin (VMP) putting down 450 rwhp with a 100% stock 3.8L and just a turbo set up and fuel system? Or is that too much of a touchy subject?

All in all, sure - most aren't going to hear about these cars, much less run into them. But they are out there, so don't think it can't be done. I've taken up the challenge a few times to do the whole "Start from zero, and build a V6 to be more powerful than a same year V8 with less money" and done it. You just have to step away from the "I need a V8" mentality. And please don't go calling me a V6 hugger or some kid who has never had a V8. I've had an '81 and '82 hatches in high school, stepped to a suspension modded '90 GT vert in college, then a 347 powered '93 GT vert, a stockish '90 chrome yellow 5.0LX vert, a '90 LX hatch and still am working on the built 351 '70 Mach 1. Also made a SC'd Explorer Sport for a daily driver last year.
 
#233 ·
When Gary knocked out 660 rwhp with only 17 psi says alot.

Should we talk about Justin (VMP) putting down 450 rwhp with a 100% stock 3.8L and just a turbo set up and fuel system? Or is that too much of a touchy subject?

We're not saying you can't get power out of a v6. What we are questioning is the claims of so much more power out of the V6 with less air and hotter air than the cobra counter part.

Now, gary's car. Is that an Eaton M112 car? If not, then his numbers don't matter in this discussion.

If it is, what else is he running besides an M112? Is he cooling his intake temps with a shot of nitrous?

The idea of 660 rwhp out of just an M112 is real far out there. 17 psi on a V6 is much less air than 17 psi on a cobra motor specially with a positive displacement blower...and that is where all the debate is coming in. 660 is completely unattainable in a cobra with an eaton unless they spray. So, to think a V6 could do it with just the eaton is pretty hard to imagine.
 
#232 ·
NEVER SAID IT COULDNT BE DONE!!!!!!!! yall expect us to believe anything you say when you cant even comprehend a simple paragraph????? i said its less likey to see one,the turbo is not a touchy subject, go back and read(if you can) and see where i said im building one for a customer..we will see what his makes but i can tell you he is going to spend the same amount building his v6 as i am building my turbo set-up for my cobra and gonna have 33% less power.please elaborate on this because we are doing pretty much the same exact kit and supporting mods where mine will make about 800rwhp and his will max at 600, in no way did i say they didnt exist, im saying if its so easy, why is everybody building these slouchy cobras? i dont give a rats ass about a magazene, id rather see one in person instead of hearing about the same 3-5 cars all the time...oh yeah madman runs 7.0s with his cobra....jay went 8.20s with his... do it with a v6, these guys are rare cases and i dont use them for my argument, i bet there are more 500hp cobras around than 500hp v6s...

as far as flow numbers, its not how you do it, flow each head on a flow bench and get the numbers...there is no "how you want to do it" i can guarantee you a v6 head does not flow as good as a 4v cobra head...this statement contradicts the statement that the v6 makes more power per lb of boost becuae its a smaller motor.. so it makes mor boost than a cobra with the same blower while flowing better???

i figure 18psi of boost,X 18hp per psi= 324 add to say original 200 hp= 524hp, do you realize what 18psi of turbo makes on a stock cobra? 700hp
 
#236 ·
everyone is talkin but no one is really saying anything. YES v6's can make power but they take more money and are harder to make the same power as a v8. so what are ya'll still arguing about? a v6 and a v8 will not make the same power with the same boost levels.
 
#242 ·
yea, i keep seeing post after post about a v6 makin xxxhp and another running xxx 1/4 mile times. no one is saying they can't be made to run, i've seen a 3.8 turbo grand national that can run 8's. but you can't compare a
v6 to a v8 with simailar mods and say they can make the same hp with the same mods. deja vu has happened way too much here. i think i'll continue this argument with the wall, at least the wall doesn't keep repeating the same thing over and over
 
#247 ·
you can go plenty fast enough on a 8.8. we've proven that with my buddies car. if your going for all out race, a 9 in is stronger and you can get pro-gear sets for it vs the motorsport gears for the 8.8.
 
#249 ·
Ok, I agree it's like talking to a wall. I didn't believe that two guys who told me about this thread prior to seeing it. The talk of M112's and turbos might be getting crossed. 600 out of the M112 is possible - but that maxes it out. I'm working on a Whipple upgrade for mine. With a turbo set up, the guys are seeing the 850-900 flywheel numbers out of their Sixers.

The 18 hp per psi was in relation to the M112 set up. The post made using the 18 hp per psi number for a stock V6 added to a stock V6 hp figure is great. Of course you aren't going to add it up to a Cobra sized number. What does that have to do with making 600 hp in a modded V6? Nothing.

Nobody has ever claimed to make 600 hp on a stock V6. On a 100% stock motor right now 450 rwhp is doable. Given the cost of the car, plus what it took to make that, you are at more rwhp than the 030/04 Cobra at much less cost total. I prefer to save money on stuff, so to me that is the way to go. My point is people saying big power couldn't be made with a V6. But that is wrong info.

And the old saying of there is no replacement for displacement coming from a 4.6L guy is ironic at best. If that were true, a 4.6L displacement motor wouldn't have replaced the larger 5.0L displacement motor right? :uhh:
Tech and knowledge is the displacement replacement.

I don't think I'll ever sway a die hard V8 owner into a V6. But I know I will spend my money on what gets my car to where I need it... and for me it's best done in the V6.
 
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