This is topic f-cam with 1.7rr??? in forum Tech Talk at Northern California Ford Owners  .


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Posted by white1990stang (Member # 2307) on :
 
I have an f-cam and a street heat inatke, with bbk longtubes and stock heads. Can i use 1.7 rockers with that f-cam? Or is it too much lift??
 
Posted by 93PONY (Member # 60) on :
 
Should be fine...as long as you have upgraded valvesprings.
 
Posted by street_illegal_stang (Member # 1554) on :
 
shawn? i wanted to ask you the same question but with gt40 irons f37e's stock springs and hardend exhaust vavles.
n/a applications with f-303/1.7rr. what size push rods,and springs should i invest on?
and who should i buy my timing chain from?central coast?
is the f-303 a good choice for n/a???
and if it matters, i'm using a cartech upper (box type intake) match ported lower intake to the gt40 irons [Smile]
-Justin R.

[ March 15, 2003, 07:42 PM: Message edited by: street_illegal_stang ]
 
Posted by StreetStang37 (Member # 935) on :
 
Thats a lot of duration and lift for stock heads. I think the .512 lift is with 1.6's so with 1.7's it would put it at .544. The 226* duration @ .05 is a lot, I shift at 6200 right now and I run the E303 (220*). You would have to eliminate the fuel cutoff for sure. I would leave the stock cam in, its not worth the effort and is a pretty good cam to use with the stock heads. I would just leave it in there and just put the 1.7's and be done with it untill a head swap.
 
Posted by st5150 (Member # 51) on :
 
I agree with StreetStang37. Leave the stock cam in there. Put that F cam and 1.7 rocker money towards the real restriction in a 5.O: The heads and intake (both, not one or the other!)
 
Posted by 93PONY (Member # 60) on :
 
quote:
Originally posted by street_illegal_stang:
shawn? i wanted to ask you the same question but with gt40 irons f37e's stock springs and hardend exhaust vavles.
n/a applications with f-303/1.7rr. what size push rods,and springs should i invest on?
and who should i buy my timing chain from?central coast?
is the f-303 a good choice for n/a???
and if it matters, i'm using a cartech upper (box type intake) match ported lower intake to the gt40 irons [Smile]
-Justin R.
If you're using the pedistal mount 1.7's the stock pushrods will work great. Springs for N/A & F303 should be 110lb seat at the minimum. which means the TFS upgrade kit from Summit ($125) will be fine.
The F will work pretty well N/A, but I think the B303 is a better fit. Both will pass smog. If you go with the F303, you'll be set for a blower/turbo later on. In which case you'll need heavier springs. Something like the Comp 978's at a minimum.
 
Posted by Glenn (Member # 520) on :
 
quote:
Originally posted by st5150:
I agree with StreetStang37. Leave the stock cam in there. Put that F cam and 1.7 rocker money towards the real restriction in a 5.O: The heads and intake (both, not one or the other!)
I know someone selling edelborcks for $600, and another set brand new for $700. Let me know if you are interested. Shoot me a pm.
 
Posted by street_illegal_stang (Member # 1554) on :
 
thanks for the advice shaun.
cosider the advice takin. [Smile]
 
Posted by 93PONY (Member # 60) on :
 
quote:
Originally posted by street_illegal_stang:
thanks for the advice shaun.
cosider the advice takin. [Smile]
Oh forgot to answer your question about the timing chain....

The FMS 9-position I've found to be very accurate & runs ~$75 from Summit. The chain will stretch ~2 degrees after a few hundred miles, so that should be accounted for when installing the cam.
The Rollmaster Billet set is top of the line, will not stretch & has 9-positions for proper cam timing (like the FMS). It can be had for ~$90 from Ed Curtis.
 




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