T O P I C R E V I E W
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Jerm95gt
Member # 1239
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posted
Ok, so I bought these from mustang5091, they say 6025 on them, but they have a e/o number and only say performer on the side. The 6025 shouldn't have a carb number and should say rpm on the side. With the 6025's u gotta notch the pistons. Anyways i was told by edelbrock that their heads all share the same casting (6025) thats why it says that. So i figured im in the clear and do have 6037's but then 66accobra pm'ed me asking me if i'd notched the pistons. Does this mean i do have to notch the pistons?? Is anyone familar with these heads?
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forced331
Member # 1270
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posted
No! My 6037's also say 6025, they all do share the same castings. These heads really love boost, don't even port them.
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66 AC COBRA
Member # 904
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posted
i would still measure them to make sure its not a 2.02 valve
isnt a 6025 - a 6037 with a bigger intake valve and the 1/2 head bolts, i know it has 1/2 head bolts or studs because i tore it apart and it was on a 351 without bolt bushings, hope this helps, and i will always take them off ur hands
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66 AC COBRA
Member # 904
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posted
i am wrong, i think u have 6039 a 6039 is a 6037 with a bigger 2.02 valve and the smog ports to make it carb legal, so it has a crab number, measure the valves with somethin, if it is over 2" it is definetley a 6039
and i am still interest, did i forget to say that
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Black94 5.0
Member # 655
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posted
Yeah, measure the valves just to be safe, but the 6037's do have a "6025" casting number on the side.......
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KCmustangboy
Member # 1927
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posted
MEASURE MEASURE MEASURE MEASURE MEASURE MEASURE I don't care what expert from the factory or what the guy who made the head said MEASURE! I mean is it really worth it not to???
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Jerm95gt
Member # 1239
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posted
What carb number do you guys have on the 6037's?
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66 AC COBRA
Member # 904
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posted
the carb number is the same for the 6037's and the 6039's the number is D-215-17, but u know that since u have the heads
just measure the heads and u will know for sure if needed, have fun notching the pistons notching pistons from fordmuscle [ May 22, 2003, 12:25 AM: Message edited by: 66 AC COBRA ]
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Jerm95gt
Member # 1239
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posted
mine are -16.......there are like 5 diff carb numbers for each model.....grrr i measured and they look like 1.9 and 1.6 but i want to be sure. Thanks for ur help
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STROKD
Member # 1668
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posted
You don't have to cut the pistons if the intake valve is a 1.9 as long as your lift isn't over about .54. If it is that close or larger on the intake side, put the head on there with no gasket and turn the motor over with a wrench on the crank to make sure there is no bumping... if it seems alright, as in the wrench doesnt lock up, take the rockers off and put the head gasket on it and put it all back together and check it again with the wrench and you should be good to go! Easy way to do it is get a cam with less than .54 lift A F cam and those heads makes well over 300 to the wheels...
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HungryHippo
Member # 537
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posted
he has a stock cam fuck jeremy, you might need bolt bushings!
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66 AC COBRA
Member # 904
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posted
if u want to wait until friday night, i will drive to martinez and bring a dial caliper to measure with
u really cant put them on anyway until u get the bushings, i dont know of anyone around here that stocks them, but i could be wrong
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Jerm95gt
Member # 1239
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posted
Thanks for the offer 66ac, but i used one today and it's 1.9 I had my shop teacher do it and he said it was a tiny bit over 1.9 maybe (he was thinking 1.94 but he said there is no way it's 2.02
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67stang12s
Member # 2314
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posted
performers come with 1.94s/1.60s performer rpms come with 2.02/1.60
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Jerm95gt
Member # 1239
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posted
cool, so yea im puttin em on but i gotta wait for head bolt bushing kit which sucks.....I want to get em on sOOOOOOOO bad.
Thanks for the help guys.
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GOT 50
Member # 1960
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posted
thats where they get you bolt bushing. ASure the 6037's look cheap[er tehn you have to spend about 75 bucks jsut to get the bushings.. ergg
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66 AC COBRA
Member # 904
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posted
damn, i wanted those heads
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HungryHippo
Member # 537
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posted
what for? the 351?
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66 AC COBRA
Member # 904
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posted
yeah, those heads are off my friends 351
i am have already bought his cam and intake, and i was tryin to get the heads and rockers, but oh well
and u say that it would be a weak combo in a 351, but i am trying to build a very reliable combo that i can drive back and forth to calpoly if i want to
and i drove the car with those heads, torque monster
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HungryHippo
Member # 537
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posted
why dont you get afr's and really piss sawson off
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66 AC COBRA
Member # 904
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posted
i cant afford afrs right now and look at the last part of my sig
once i rebuild it for the final time it will be getting afr's, fti cam, and spyder or box intake
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AaronC
Member # 86
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posted
quote: Originally posted by STROKD: You don't have to cut the pistons if the intake valve is a 1.9 as long as your lift isn't over about .54. If it is that close or larger on the intake side, put the head on there with no gasket and turn the motor over with a wrench on the crank to make sure there is no bumping... if it seems alright, as in the wrench doesnt lock up, take the rockers off and put the head gasket on it and put it all back together and check it again with the wrench and you should be good to go! Easy way to do it is get a cam with less than .54 lift A F cam and those heads makes well over 300 to the wheels...
P/V clearance has almost nothing to do with peak lift. The valves are no where near the piston at peak lift. P/V clearance has to do with overlap when the piston is near TDC. You can have a .565 lift lobe with 216 degrees duration (.050)clear all day and a 230 duration with .499 lift that won't come close.
As KC mentioned ALWAYS check no matter what!
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mustanggt5091
Member # 444
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posted
quote: Originally posted by 66 AC COBRA: once i rebuild it for the final time it will be getting afr's, fti cam, and spyder or box intake
Wow taht sounds just like my combo getting put together now Does this mean I finally caught you admitting my car was gonna be fast!
And hell ya it was a torque monster [ May 22, 2003, 11:40 PM: Message edited by: mustanggt5091 ]
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66 AC COBRA
Member # 904
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posted
nope, becuase mine will also be gettin a turbo along with the other mods but i cant hate because urs will be done within a few months (and dont say sooner because i know u are slow at everything ) and my finished turbo 357 wont be finished for a while, a long while
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