GT-40 heads, 1/4 time help.
#1
GT-40 heads, 1/4 time help.
i just bought a set of Iron GT-40 heads and an explorer intake. i have a 5-speed car with a 4.10 what cam should i run? i was thinking about a b or an e cam. i use the car as my DD but also run her on the strip. also will i need differant pushrods for the gt-40 heads? i will be using the stock rockers for the time being.
as for the explorer intake, should i need anything special to install, or can i just slap it on?
do you think this setup is good for high 12's?
MSD 6al
MSD coil
Explorer intake
GT-40 heads.
whatever cam someone recomends
4.10 gear
Megabyte jr. lowers
double adjustable uppers
90/10's
50/50's
4cyl front springs
K&N filter.
AC delete
Smog delete
UD pullies
PRO-5.0 shifter
Explorer TB (not sure what size)
Stock injectors
stock mass air meter
stock shortblock
as for the explorer intake, should i need anything special to install, or can i just slap it on?
do you think this setup is good for high 12's?
MSD 6al
MSD coil
Explorer intake
GT-40 heads.
whatever cam someone recomends
4.10 gear
Megabyte jr. lowers
double adjustable uppers
90/10's
50/50's
4cyl front springs
K&N filter.
AC delete
Smog delete
UD pullies
PRO-5.0 shifter
Explorer TB (not sure what size)
Stock injectors
stock mass air meter
stock shortblock
#4
RE: GT-40 heads, what cam? help.
I have a Ford E-Cam and I'm happy with it. It's for low to mid-range power, as torque peaks at 2500 RPM or so, so it kind of falls on it's face at higher speeds...But I don't drive much on the highway, so that's not really an issue. It's also good for boost applications if you ever consider going with F/I.
#7
RE: GT-40 heads, what cam? help.
i 2nd a Trick Flow stg. 1. And yes the stock pushrods will work the the GT40 heads when you use the stock rockers.
I also think it would be worth the time for the machine studding, thats going to mean new rocker arms and i believe your going to have to get some slightly longer pushrods but im not positive. Your best bet is to get it done, the assemble the heads and install them on the car and color the tip of a valve stem with a permanant marker and then rotate the engine over a few cycles by hand. Then take a rocker arm off and look where the tip of the roller rubbed the marker off, it should be dead center. To far to the inside means you got to short of a pushrod, to far to the outside means to long of a rod. Get an adjustable pushrod checker. That'll let you know.
I also think it would be worth the time for the machine studding, thats going to mean new rocker arms and i believe your going to have to get some slightly longer pushrods but im not positive. Your best bet is to get it done, the assemble the heads and install them on the car and color the tip of a valve stem with a permanant marker and then rotate the engine over a few cycles by hand. Then take a rocker arm off and look where the tip of the roller rubbed the marker off, it should be dead center. To far to the inside means you got to short of a pushrod, to far to the outside means to long of a rod. Get an adjustable pushrod checker. That'll let you know.
#8
RE: GT-40 heads, what cam? help.
thanks for the help, i am going to check into the stage 1 cam. what rockers should i get then, 1.6 or 1.7? i do have stock pistons. and what do you guys think it will cost to machine in studs?
#9
RE: GT-40 heads, what cam? help.
are gonna deck the heads?
if so if your using a b-cam you might need to check on the 1.7's and valve clearance
but you really should spend some money on porting the exhaust, and clean up the intakes too. not huge port job on the intake...smooth the radius' and a nice port and polish on the exhaust.
comp valve job too.
you'll go 12's...... i'd guess about 12.80 @ 102-105
the stock pushrods will work too.
pretty sure the only mod you need on an explorer intake is tap the water temp sending unit. and plug 1 (something...not sure what...vac line maybe)
if so if your using a b-cam you might need to check on the 1.7's and valve clearance
but you really should spend some money on porting the exhaust, and clean up the intakes too. not huge port job on the intake...smooth the radius' and a nice port and polish on the exhaust.
comp valve job too.
you'll go 12's...... i'd guess about 12.80 @ 102-105
the stock pushrods will work too.
pretty sure the only mod you need on an explorer intake is tap the water temp sending unit. and plug 1 (something...not sure what...vac line maybe)