MustangWorks.com - The Ford Mustang Power Source!

Go Back   MustangWorks.com : Ford Forums > Mustang & Ford Tech > Windsor Power
Register FAQ Members List Calendar Mark Forums Read

Notices


Poll: Which Head is better?
Poll Options
Which Head is better?

Reply
 
Thread Tools Rating: Thread Rating: 4 votes, 3.00 average. Display Modes
Old 11-17-2010, 04:57 PM   #21
rauscher89lx
Registered Member
 
Join Date: Nov 2010
Posts: 1
Default Re: gt40 vs gt40p

alright im new to this forum, saw this topic and thought it might help, and your inputs may give me a better idea of what im trying to do. i recently bought an 89lx, it now has 93000 miles on the stock 302. im not trying to make it crazy fast, but pretty quick and sounding right, would be nice and heads were my next step.

list of what i have done so far...
373s
subframe connectors
lakewood shocks and struts
lakewood upper & lower c/as
performance rotors and hawk hp pads
underdrive pulleys
bbk cai
shorty headers
catback exhaust...

i plan on removing all my smog shit, cutting my cats, and throwing an xpipe and new mufflers to beefup my exhaust.

i just pickedup a cobra intake that hadabout 1500 miles on it, brand new tfs1camshaft, brand new 70mm accufab tb, brand new 75mm powerflow(or something like that) maf matched to 30lb injectors..
and now i have a couple offers from locals with a set of iron gt40heads, completely re done to make them pracitically brand new 400$, and gt40p heads 450$ ( but i can probably get him down to 400 as well ) do i buy one of those? or pay an extra couple hundred and get an aluminum set? do i need to get roller rockers, pushrods, springs or anything i like that?

im hoping ill be hitting somewhere close to 290 - 300 hp? if not what else can i do, or change thats not to unafordable.
rauscher89lx is offline   Reply With Quote
Old 05-25-2011, 02:58 PM   #22
quentins_88
Registered Member
 
quentins_88's Avatar
 
Join Date: May 2011
Location: mauckport, in
Posts: 2
Default Re: gt40 vs gt40p

now hold up just a second here guys, i am new and have been reading some of these posts let me clarrify that i am running a 347 stroker with p heads, 36lb injectors, c&l mass air meter, eagle crank, comp cam pistons, trick flow intake. my heads have a valve upgrade along with springs upgrade. last sat i ran a 8.68 at 89mph in a 1/8 on street tires spinning in fourth a the finish. these heads will with some wrk and correct combo put down serious hp
quentins_88 is offline   Reply With Quote
Old 06-14-2011, 06:41 PM   #23
gdniel
Registered Member
 
Join Date: Sep 2003
Location: florida
Posts: 5
Default Re: gt40 vs gt40p

I have to agree with the post above, a few of you should take a look at Tinman's videos going high 11.6- low 11.7 with gt-40 iron heads on a N/A 302, or his dyno videos of his 347 putting down 360 RWHP, 355 RWTQ with another pair of gt-40 iron heads.
gdniel is offline   Reply With Quote
Old 02-11-2012, 05:24 PM   #24
bryant99
Registered Member
 
Join Date: Nov 2002
Location: Danville, IL
Posts: 2
Default Re: gt40 vs gt40p

I put a set of GT40P heads on my mustang last summer from the stock heads.The P heads are sweet and do flow better.I was always fowling plugs all the time and now the plugs are a pretty carmel color.My engine is not stock its been built to run and runs so much better.Any GT40 heads are better than stock heads on the mustangs.Mine came off of a 97 or 98 ford explorer.They are just a all around better head.
bryant99 is offline   Reply With Quote
Reply


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
2 types of GT40 iron heads, not talking abou the P Hethj7 Windsor Power 5 10-26-2010 09:16 PM
GT40 Intakes- Explorer? squid Windsor Power 9 09-22-2010 03:01 AM
Whats the difference in GT40 and GT40P Heads? RoushRacing6N17 Windsor Power 2 11-17-2003 11:52 PM
GT40 intake good enough? 91evilstang Windsor Power 8 09-02-2001 04:41 PM
GT40 Intakes Smokedawg Windsor Power 2 02-07-2001 10:28 PM


All times are GMT -5. The time now is 06:24 PM.


SEARCH