Bobert

Im currently at university until april, and im trying to compile some parts for a build.

Right now i have a gt40 tubular intake, 65mm t/b and a 70mm t-bird maff.

Im looking into buying some ported World Jr heads, and i have been doing some research and it seems like these heads are much better then the gt40s i was originally planning on going with.

Im interested in know if these heads would be to large for my application with 19# injectors.

Im trying to do this on a budget, so im cutting corners with the maff and t/b.

But will my car be running lean ? With all the extra air flow?

I have read that the 19# are good up till 275hp peak at 300hp, but i have also heard that the heads can pull around 300hp?

But also with that being said, the 93 cobra came with 24# and gt40 heads.

I have little experience, and id like to know, i might buy these heads Friday or Monday!

Feel free to reply, any input is greatly appreciated.

mjr46

plenty of gt-40 combos that are out there at the 300 hp mark......how much you paying for the world jr's???

Bobert

$500 for the set "with the f303 rated valve springs" ?

no rockers

apparently has 500km on them, been ported by a place around here.

Bobert

he's selling the cam too, but id rather buy a cam new.

he's asking $500, might be able to get them for less, hes also selling a set of 24# for $125 practically new might try and get those too. Except then id need a new maff, which just for the housing is like $250!

i really dont know what to do

mjr46

if all your shooting for is 300 rwhp then go for it have it tuned and should make close to 300

Bobert

Well the only reason im shooting for 300 is because im afraid it'll be lacking fuel to produce any more! haha

im starting to think these heads have potential and i should just go ahead and use 24#'ers

how does a maff work? do i just buy a $220 73mm housing thats calibrated with 24#'ers and use the stock maff sensor?

Would i gain anything i used the Lincoln sensor i bought? the F2VF-12B579-A2A

Cause if i can get the heads and the injectors for like $550 of the guy, and im only $220 away from going from 300hp - like 330 hp

id be a fool not to!

mjr46

don't use the sample tube methood way of calibrating for inj change

Bobert

then ill probs just stick with my 19#'s until i see it as a major issue, which could be as soon as i install the heads haha.

how do i 'get a tune'

is it a chip added to the computer?

can a place with a dyno do it?

my dads work recently bought a 2000hp mustang dyno ( yes thats the name of the company )

i have no idea if they have someone that does tunes? haha there a more old school company..