not a 302 but a 351. you have to think about it like this, your gonna want a set of headers anyways so swap headers arent gonna cost you much more. the only thing you would need extra is the pan which is less then $150 and a distributor which i got used at a junk yard. good set of aluminum heads, $1200, cam $200, the rest get used off of here and youll be close to 350 with less then 6k, idc what anyone says, i did it with 1500 but used left over parts

 

I think you misread his post. Not $6000. 6000rpm.

 

imho you'll need more compression to get that number, also some longtubes, a better intake, maybe a 4" cai

 

This has gone too far....

Your dyno operator can make you achieve 350 to the wheels ..............

 

Don't understand what you mean about "This has gone too far..."...

Are you implying they're fudgin' on the numbers?

 

My #'s come out to actually making 338 rwh and only shows 325 on the dyno...put in 3275lbs ... 115 trap speed and 15% drivetrain loss....http://www.modulardepot.com/?show=hpc

Dyno don't seem inflated to me....

 

nice run patrick ... i have a strawberry notch as well ... its great beating people with $425 engines ... yes it takes a lot of work, but its fun making your own horsepower ... very rewarding ...

 

Looks like it's a path that only the "non-posters" have gone down....:snore:

 

I am thinkin that shaveing some gt40p's and the right cam and intake would put you over the 350 mark.

 

i would say that would be a good start ... i think a good flowing intake is a must ... something 280cfm's plus ...

i know this can be done, i think the ones that have done it wont post ... hell i would love to hear from anyone making 325+ ...

im to the point that if you have a 302/306, any combo ~ post up your 325+ numbers ... come on you afr/twisted wedge guys, post something up ...

 

Yea it seems you always hear about the guys with gt40 combos makeing around 280 or so and then you get the guys with afrs and TW setups that are makeing around 340 or so. I am interested in hearin from the guys that are in the 300-340 range and how they did it. I think thats a great place to be with a mild street setup.

 

313 hp / 332 tq with GT40P heads on a stock 302 block. No porting, but a good valve job and 54 cc chambers. Has run 11.86 at the strip.

 

Most information I've seen with the GT40P heads state they flow very reasonable numbers compared to the heads on this engine below and it is rated at 340HP.


http://www.jegs.com/i/Ford+Racing/397/M-6007-X302E/10002/-1

http://www.fordracingparts.com/parts/part_details.asp?PartKeyField=10842


Look at the flow numbers and then compare back down to the old E7TE heads. In fact if you bump the exhaust valve and ports just a hair you are right there with the X on the average flow numbers. I think the best thing these heads have going is port velocity. Just like the CNC power heads also shown in the below link. They are just E7TE heads run through a CNC machine. We used them in class racing that required an OEM head back in the day and were amazing.

http://eecanalyzer.net/tech/docs/HeadFlow.gif

See this for info on the E7TE heads (CNC Power Heads)
http://www.powerheads.com/e7heads.html

 

saw a car at a dyno locally put down 200rwhp through a c4 on a mustang dyno. gt40s and a stock bottom end. Not sure what its putting out at the crank.

 

That sounds pretty weak for a GT40 setup. I had a stock bottom end and a set of 351 heads, stock cam with 1.7 roller rockers that would lay down 255.

I had a dart headed engine and carb setup that did 256 on the same dyno a few years earlier.

On the other hand final drive ratio can greatly impact dyno numbers. A car rolling in with 3.08 gears verses 4.10 gears can be a lot different if all else is the same. I've had a GMC Sonoma that the guy wanted to run it in third for some reason. After about 4 runs I caught it and told him to put it in 4th and got about 10 more HP.

 

If I remember right i think that was in 2nd gear with 4.30 gears.

 

comparing dyno numbers and ET's from different elevations, temperatures, locations, etc its worthless.

Stop worrying about other guys, build something that makes you happy. there is always some one faster, period.

 

Old combo in the sig made peak power at 5,600rpm with stock throttle body. Switched to a 75mm and it was pulling 2 lb/hr more air in datalogs (about 20hp!) and was noticabely faster but didn't get it to the dyno or track unfortunately.

Scorched the block on 150 shot so I switched everything over to a junkyard 351w with an over ported victor 5.8 intake. Just parts I had laying around. made 318/346 and went 11.9@115mph on it's second pass down the track.

 

Old combo in the sig made peak power at 5,600rpm with stock throttle body. Switched to a 75mm and it was pulling 2 lb/hr more air in datalogs (about 20hp!) and was noticabely faster but didn't get it to the dyno or track unfortunately.

Don't let millhouse see this post.... he'll go on and on about how he beleives a stock TB isn't a restriction on most setups....

 

LOL He can can keep that opinion and keep seeing tail lights.

 

Do the thread starter. Why are you only looking for the HP? Hp changes between Dyno's so you really should use this for a tuning tool. GT40P & GT40 can make some good 1/4 mile numbers, some are in the 11s but that will require some work but it is worth it in the end.

 

just curious to see what kind of power people made with some 302 combos, preferably gt40 combos ... how else should i phrase the question? ... as you say it, some combos are in the 11s, but what about people like me that just built a 300+hp/350+tq combo thats sitting in a 1995 convertible? ... theres no way im going 11's, although its an 11 second engine ... some people only make 290hp, but weigh 2800lbs and run 11's ... this is why i asked for dyno numbers ...

you're definitely correct on all dyno's are NOT created equal, this is why we chose to go to MD ... if you can make HP with these guys, your car will outperform those #'s once you hit the track ...

no hrspwer made 294 on md's dyno and went 11.80 ... hes made 300+ on other dynos in the area ... hes nearly 3200 lbs ...

this is why the thread starter asked for dyno numbers ... it makes for a good discussion when its january in ohio ...

 

my buddies with gt-40s was running 8.20s in a 3200 pound back halved car and a 3.73 gear.

 

My car ran 7.80's @ 89 mph making this on the dyno. The car had BF drag radials and steeda lowering springs. 60 foot was 1.73. Full weight coupe with a/c. I just drove it to the track and decide to make a pass. With slicks and a better suspension I'm sure 7.50-7.60's wouldn't have been a problem.. The car was too nice for me to turn it into a drag car though.

Combo
gt40 heads not p's
1.94/1.60 valves
Tmoss ported xploder intake
comp xe270 cam
410 gear
t-5
electric fan
75mmtb
4inch CAI
pro m 95mm MAF

 

I was going to get some aluminum heads for the notch I'm building but this thread makes me want to see how fast I can go with my gt40's on a stock bottom end with a new custom cam, carbureted, and oversize valves.

 

money is tight with me. It is a lot easier for me to mill a gt-40 head down to where it won't lay flat on a table because the valves are sticking out rather than a brand new aluminum head.

 

you should see the hair dryer he's putting on his "new combo" - if it doesn't run low 9s it needs a driver mod......... oh wait, that wasn't his - or was it? ..........

 

That TFS combo had two runs on it. Give him some real seat time and tuning (he didn't even have a dyno session for crying out loud LOL!) and you guys might be surprised. Don't get too crazy putting the guy in his place.

my buddy said it best that's reading this thread ... lets put on big heads that you have to rev to 7000 rpm, no low end street car that you have to drive ...

I hope you're not serious. That's so 1980's. LOL

 

Oh and I will be waiting for my signed Time slip from you via postal mail....

 

we will do better ... how about video ...

ok sweetheart, im off to work ... some of us work on here ...

 

So when did a very broad powerband and rpm become a bad thing on a street car???

 

never..........unless you want max peak power.

 

Heh, at least mustank left the Colorado forums alone. He got into it with me on there because of an LS series combination...

Same arguments, over and over.

His old lady must be a real cold fish if he spends so much time on forums arguing the same bull day in and day out.



And Patrick, nice to see you postin on here man! How you been?

 

yeah don't knock the old 40's they work good