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Topic: gt-40 heads and explorer intake (Read 2616 times) previous topic - next topic

gt-40 heads and explorer intake

Just wanted to know what kind of performance i can get from this setup, i have a chance to grab up a set of 93-95 cobra gt-40 heads and a intake from a '96 explorer 5.0,keep in mind my engine is a HO 5.0 also i already have a bbk 65 mm TB that will go with this setup.

Also is $300 for the heads and upper and lower a good price ?
I'm the forum asshole, put on your big boy pants and deal with it.  :flip:

gt-40 heads and explorer intake

Reply #1 –
$300.00 is a good price. It'll be a power difference you can feel in the seat of your pants when you hit the gas.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

gt-40 heads and explorer intake

Reply #2 –
300 is a decent price for the heads alone.. the explorer upper and lower are better but not a huge gain

gt-40 heads and explorer intake

Reply #3 –
Sounds good to me, i'll be that much closer to my goal, once i get ahold of this i can get my cam kit then get the heads,intake and TB machined and rip it all apart and slap in the new and i'll be happy.
I'm the forum asshole, put on your big boy pants and deal with it.  :flip:

gt-40 heads and explorer intake

Reply #4 –
The intake with those heads and a 65mm throttlebody will be great. You will need to have a stock throttlebody spacer opened up to 65mm as well to let the throttlebody do it's job. The local machine shop here charged me $10.00 (about 5 years ago).The Explorer/GT40/Cobra intakes all flow nearly the same,and are a big improvement over the stock H.O intake. Get them and get your engine together. You will need new valve springs for Explorer heads.Otherwise,you may not like what can happen.

Also,get some gears unless you've already swapped them out. With an E303,a stock torque converter and that cam don't like each other. I found out the hard way. I have the T-5 now,so that issue is resolved. For a daily driver,I'd suggest 3.55's or 3.73's.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..

gt-40 heads and explorer intake

Reply #5 –
Cool cool i didnt know i would need the spacer i'll get right on that, right now im planning on 3.73's as it will be more street since winter is in full swing here. Im planning on a custom cam with some better springs, hardened push rods and some roller rockers thinkin 1.6 or 7. Along with the heads,intake im gonna add a cold air intake,upgrade the timing setup and just leave it at that until summer rolls around. Once the strip opens back up im gonna open it up and see how much power i can push out of this hopefully the trans can hold together lol.
I'm the forum asshole, put on your big boy pants and deal with it.  :flip:

so or ho?

Reply #6 –
Let us know how she runs, I'm building a set up similar to yours with a slight amount of boost.
[SIGPIC][/SIGPIC]88 t-bird: 5.0ho, gt40y, crane 2031, fms 1.7, paxton@5#, aod wide ratio, tci stall, performer rpm upper, 70mm bbk, pro m 60, 42#s, 3.73 7.5" posi, jba shorties, borla, upr x. 13.4 @ 104mph. cbaza, moates, tuned by decipha

gt-40 heads and explorer intake

Reply #7 –
If you already have a HO pistons with valve reliefs then you're all ready to go.
88 Thunderbird LX: 306, Edelbrock Performer heads, Comp 266HR cam, Edelbrock Performer RPM intake, bunch of other stuff.

gt-40 heads and explorer intake

Reply #8 –
If you have about $100 then there is a guy that is one Corral that can rework the lower intake and it will make a huge difference.  His name is Tom Moss and I had him port the lower on my old Cobra intake setup and it made an honest 25hp difference on the dyno.  He goes by TMoss on the Corral and you can just PM him for the details.  Lots of guys are running ported lowers by him and swear by them.

He has a ton of tech docs here: http://eectuning.org/forums/viewforum.php?f=17

Darren

83 351W TKO'd T-Bird on the bottle


93 331 Mustang Coupe - 368 rwhp

gt-40 heads and explorer intake

Reply #9 –
Quote from: vinnietbird;343469
You will need new valve springs for Explorer heads.Otherwise,you may not like what can happen.

Also,get some gears unless you've already swapped them out. With an E303,a stock torque converter and that cam don't like each other. I found out the hard way. I have the T-5 now,so that issue is resolved. For a daily driver,I'd suggest 3.55's or 3.73's.

 
Isn't the Explorer a HO engine ? Whats up with the springs ? Too soft ? What size converter works with the E303 ? I've got a 2500 stall converter I want to use with 3.08 gears out back. Any mild cam recomandations ?
[SIGPIC][/SIGPIC]
1974 Falcon XB-GT Coupe
1988 Thunderbird Sport
1962 Thunderbird convertible
1971 Mustang Mach1 429SCJ

gt-40 heads and explorer intake

Reply #10 –
Not really. It's a truck engine (so to speak) in Explorer form.The cam is made to move a lot of weight,not go fast.The valve springs are too soft,even for a stock H.O cam. All easy fixes.
'88 Sport--T-5,MGW shifter,Trick Flow R intake,Ed Curtis cam,Trick Flow heads,Scorpion rockers,75mm Accufab t-body,3G,mini starter,Taurus fan,BBK long tube headers,O/R H-Pipe, Flowamaster Super 44's, deep and deeper Cobra R wheels, Mass Air and 24's,8.8 with 3.73's,140 mph speedo,Mach 1 chin spoiler,SN-95 springs,CHE control arms,aluminum drive shaft and a lot more..
 

gt-40 heads and explorer intake

Reply #11 –
MUCH better off starting out with a H.o. Block.