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#1
06-23-2012, 10:20 PM
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GT40 vs standard heads
So, Im picking up my block on monday to start reassembly. The machine shop said that I likely need to replace the heads as there are stress cracks in those through out. Whats the difference between standard and gt40 heads on a 351 windsor. I feel like if Im having to get new ones anyway, maybe I should upgrade?
Also with the GT40 heads, do I have to change anything else? 
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#2
06-24-2012, 12:16 AM
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Upgrade to the GT40P heads.
Much cheaper than the gt40 heads and they have better flow and will generate more horsepower. $400 for a pair is what the going rate is for the 2.
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Rollin' Gangsta Style Quote:
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#3
06-24-2012, 12:01 PM
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Not sure about the rating for the p heads, but the GT40 heads will get you approx. 40 HP. Get the Ps without question.
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Previous: 1993 Prostar 205 Red 1998 Closed Bow Ski Boat, Ford 351, 310 hp, Acme 4 blade, Perfect Pass SG. FAQ Tyler Ski Club To me, this forum is about love of inboard boats. It is about the sharing of information and, on a good day, some humor. It is not about post count, brand of boat, or any other superfluous labels that lend themselves to a false sense of superiority. Please, respect one another, try to pass on accurate information, and keep your eye on the ball.
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#4
06-24-2012, 05:51 PM
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#5
06-24-2012, 06:23 PM
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Quote:
A friend of mine snagged a set a few months ago for US$575 + shipping. Their site showed plenty in stock (at that time) but when he called, they had none in stock but took a core and built him a set in three days. Upon his request (recommended) they drilled the bolt holes out to 1/2" dia. You'll have to reuse your current push rods and rocker arms but the rest is plug and play. .
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93 190 . Hypocrites, boot lickers, and crybabies…the world is full of them…. just look around - near-by . Duraflap / Kaydenco aren't worth a hoot Hose picture (internal) http://www.mastercraft.com/teamtalk/...68&postcount=8  Quote:
Last edited by Cloaked; 06-24-2012 at 06:28 PM.
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#6
06-24-2012, 09:39 PM
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I ordered some GT40Ps off ebay from member Odessa*cylinderheads for $215 a piece, with brass freeze plugs, holes drilled to 1/2", no core charge and free shipping. They shipped fast. I coupled that with an Edelbrock Performer intake. the price has went up some but still not a bad price for some bolt on performance
http://www.ebay.com/itm/FORD-EXPLORE...14b6b8&vxp=mtr
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#7
06-24-2012, 10:39 PM
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http://car-part.com/cgi-bin/search.cgi
check this site for used cylinder heads--might be of some help
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#8
06-25-2012, 03:49 PM
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Quote:
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Choose The Right 5mph>Wakeless Speed>32mph
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#9
06-25-2012, 07:54 PM
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So many people talk about taking the heads to a machine shop to enlarge the holes. Is there a reason why people don't just enlarge the holes themselves with a 1/2" drill bit or or step drill bit?
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#10
06-25-2012, 11:00 PM
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It's the right way to do it when, like me, you don't have a drill press. Other than that, I wanted straight holes.
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Choose The Right 5mph>Wakeless Speed>32mph Last edited by Ryan; 06-25-2012 at 11:47 PM.
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