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Old 04-03-2004, 01:47 PM   #1
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Valve springs and stock valves

i was on a 5.0 stang board, and they told me that using the valve springs i have would be a bad idea, but wouldnt tell me why! those were the arrogant bastards who felt that since i dont have a mustang, im lesser than them :angryfire

well, to the question, i have a set of trick flow valve springs, 110lbs of seat pressure, would these be alright on the stock valves?
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Old 04-03-2004, 04:55 PM   #2
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Well, anytime you use something stronger (the springs) with something stock (the valves) you could be asking for trouble, I would say it depends on how much seat pressure the stock springs make possibly, if its a lot less than the trick flows, I would get some better valves, or use the stock springs, but thats just my humble opinion.....
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Old 04-03-2004, 06:08 PM   #3
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thats pretty much what im thinking, im not positive on the stock seat presure, but i know the valve like to float at about 4800, where as these springs would allow me to pull up to about 5500

i guess its time to start doing more homework and research
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Old 04-03-2004, 06:52 PM   #4
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I never had a problem running a bit stiffer than stock springs and stock valves. The pring has to match the cam more so than the valve. Of course I was fooling with other than Ford engines if that makes a difference.

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Originally Posted by slvr2000stang
Holy crap he's right.
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Old 04-03-2004, 07:37 PM   #5
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i know in small block chevys, theres no problem, my friend and i built one for his 90 firebird, used some crane springs that were basically overkill and he didnt have a problem, im just not too sure about the fords in that aspect
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Old 04-04-2004, 09:38 AM   #6
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That should be fine, I do these things all the time. (on a V8)

What matters is the installed height and coil bind height.
I saw in the summitt catalog that those are sold for stock
valve 5.0 heads... so :p to those who said it would not work

If the IH and stuff check out OK, the pressures are really good for you.

Are U using it on a V8 or V6???
THe V6 has a shorter IH and the springs will have more pressure
and bind sooner, but on a 5.0 it would be fine. I jsut noticed your
name, T-Bird232ci, and no, they will not fit on a V6 and handle much lift.

I have springs that fit V6's
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Old 04-04-2004, 11:13 AM   #7
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Robert, he is building a 5.0 to go in his tbird I believe, actually I should have known they were ok, I put Crower double valve springs on stock 289/225hp valves back about 72 in my 64 1/2 convertable stang. Never had a problem, that thing reved up to about 8K with high rev hydraulic lifters and those springs, sheared the water pump shaft the first time I did it though, that was fun. took out the radiator in the process, ended up with one from a Comet in there.
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Old 04-04-2004, 07:12 PM   #8
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yeah, im dropping a 5.0 in place of the 3.8, id build the 3.8L if i didnt have a non-roller and non-efi car

i hate when people give you false info, here i was all worried about the springs being too much for the valves and bla bla bla, bastards

thanks for the help, sometime towards the end of this month, i should be picking up an upper intake, engine harness, and some E7's for the engine
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Old 04-25-2004, 09:32 AM   #9
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Quote:
Originally Posted by Tbird232ci
yeah, im dropping a 5.0 in place of the 3.8, id build the 3.8L if i didnt have a non-roller and non-efi car

i hate when people give you false info, here i was all worried about the springs being too much for the valves and bla bla bla, bastards

thanks for the help, sometime towards the end of this month, i should be picking up an upper intake, engine harness, and some E7's for the engine
Older 289 heads are better, higher CR

I can help some on the combo
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Old 04-25-2004, 09:44 AM   #10
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hmmm, 289 heads huh? what years/castings should i look for?

will i have to worry about piston-to-valve clearance?
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Old 04-25-2004, 10:09 AM   #11
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Quote:
Originally Posted by Tbird232ci
hmmm, 289 heads huh? what years/castings should i look for?

will i have to worry about piston-to-valve clearance?
later ones are best, C7 I believe...
cut them for bigger valves and blend the bowls,
port match them and work the entire port,
they will flow quite well and be good for an easy
400 HP. Quite easily.
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Old 04-25-2004, 10:31 AM   #12
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god i wish i understood this language lol
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Old 04-25-2004, 01:11 PM   #13
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Quote:
Originally Posted by RGR
later ones are best, C7 I believe...
cut them for bigger valves and blend the bowls,
port match them and work the entire port,
they will flow quite well and be good for an easy
400 HP. Quite easily.
and i bet those are a pain in the *** to find arnt they? :p

how much would that machine work cost if i sent em over to ya?

looks like if i do get those heads, ill definatly need a different intake manifold seeing as the stock one will be a nice restriction
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Old 04-25-2004, 01:13 PM   #14
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also, tha thread before this one "setup feedback" lists pretty much how i was going to build the car, if you see something you think i should improve on, definatly tell me

i was aiming to get the 5.0 in the car this summer, but due to other circumstances, im taking more time, and more time equals more money, so im not as worried about pinching pennies
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Old 04-25-2004, 02:33 PM   #15
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Edlebrock Torquer used to be a real good intake on the 289/302 engines.
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Old 04-25-2004, 07:50 PM   #16
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well Rick, since im going EFI, that doesnt help me much :p, in reality, i have heard nothing but good about those intakes for the 289/302, it just wont work for my application

for an intake, im thinking about grabbing a Typhoon intake from ebay, its an almost exact copy of the edelbrock, for like 350, the ports just arnt all polished and smoothed out like the edelbrocks
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Old 04-26-2004, 10:47 AM   #17
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He, nope, Torquer wouldn't do for you, its a 4 bbl intake.
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Old 04-26-2004, 03:03 PM   #18
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Quote:
Originally Posted by Tbird232ci
well Rick, since im going EFI, that doesnt help me much :p, in reality, i have heard nothing but good about those intakes for the 289/302, it just wont work for my application

for an intake, im thinking about grabbing a Typhoon intake from ebay, its an almost exact copy of the edelbrock, for like 350, the ports just arnt all polished and smoothed out like the edelbrocks
I'd port one of those for a reasonable fee
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You are the true cam master dude...
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