anyone know how much lift stock heads can take??

B

bigbush62

New Member

Aug 5, 2005

11

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WA

Aug 5, 2005

#1

• Aug 5, 2005

• #1

i've heard stock heads can handle .500" but im not sure if thats true. ive got some 1.7 rockers on the stock heads but im tired of the crappy stock cam, im looking to put on an e or B 303 until i rebuild the motor but im afraid this will be too much lift with the rockers on for the stock heads.

does anyone know?? if so any recommendations

 

S/CBlack95GT

New Member

Apr 6, 2003

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Tampa Palms, FL

Aug 5, 2005

#2

• Aug 5, 2005

• #2

It depends on the mileage. I dont think the stock springs could handle 6000 rpms at .500" lift without floating.

 

SQUEEZE&STROKE

New Member

Jun 24, 2005

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SOUTHERN CA

Aug 5, 2005

#3

• Aug 5, 2005

• #3

bigbush62 said:

i've heard stock heads can handle .500" but im not sure if thats true. ive got some 1.7 rockers on the stock heads but im tired of the crappy stock cam, im looking to put on an e or B 303 until i rebuild the motor but im afraid this will be too much lift with the rockers on for the stock heads.

does anyone know?? if so any recommendations

Click to expand...

I ran a crane 2030 which is really close to the e cam with no problems...1.6 rockers though. Make sure you use the rockers that the cam calls for. RPM's with stock springs are what you have to look out for...as mentioned above .500" lift on old stock springs are not going to last for ever. my brother in law got the trickflow spring and rocker upgrade with stock springs and it worked great...just some possibilities.

 

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wytstang

Mustang Master

Mar 14, 2004

4,988

4

78

Summerville,SC missing South Fl. weather :(

Aug 5, 2005

#4

• Aug 5, 2005

• #4

Stock heads=stock cam, it makes no sense to go through the hassle and cost of a cam swap when the heads them selves can't support what the cam works off of. Unless you plan on porting them your money would be well spent else were imo.

 

94CobraPace

Founding Member

Aug 30, 2000

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Houston, Tx.

Aug 5, 2005

#5

• Aug 5, 2005

• #5

It's as much on how much duration the cam has also!!

 

final5-0

Mustang Master

Apr 6, 2003

6,817

12

79

DFW Texas

Aug 5, 2005

#6

• Aug 5, 2005

• #6

Not every time but sometimes, you'll have guide probs with a good bit of lift on the E7's.

I've seen peeps with high milage motors post about going to a 1.7 rr and shortly after the upgrade, the guides started to pass oil.

Later
Grady

 

super302

I'd do anything for free Bapples

May 29, 2004

2,878

1

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Davenport, IA

Aug 5, 2005

#7

• Aug 5, 2005

• #7

you will see very little power gain w/ a dif cam on the stock E7 heads, at least get some gt40p's for like $350