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E7TE valve springs lift limit? another budget roller 302 build up

September 22 2009 at 8:01 AM
  (Login milner351)
from IP address 136.1.1.101

I've been following Danfords build - I'm putting together something somewhat similar for a ranger pick up.

However - instead of a retrofit roller into an older block with DOOE W heads, I'm starting off with an '87 HO roller cam 302 and E7TE heads
(I have 68 289 heads, and DOOE W heads but both need rebuilding and I'm trying to stay cheap and simple with this build)


Is the max lift for stock roller cam heads (E7TE) 0.500" ???


that's what I read here:
http://www.network54.com/Forum/119417/message/1251224252/springs


I couldn't find any additional info with the search, or in the FAQ. I've been around the clevo and FE forums - so I know this is the best place to ask!


I'm a bit confused by the fact that all of the ford racing cams are matched duration and lift intake and exhaust.
You'd think Ford Racing would know more than anyone about these engines, however, with the small exhaust ports - wouldn't a cam with more lift / duration on the exhaust side make sense?


I have a B303 cam, but I'm hoping for a bit more than that with this street strip build.


Summit has a good deal on a Lunati:
http://www.summitracing.com/parts/LUN-81302LUN/

this has .512" lift in/ex for $140 it's tempting - but - if it also requires new springs, I'm still out another $75 or so:
http://www.summitracing.com/parts/FMS-M-6513-A50/


If I'm going to have to buy springs anyway - I might go a touch bigger with the cam.


Here's the rest of the build specs:

302 HO TRW forged piston short block - good rod bolts, new rings/bearings.
E7TE heads home ported to remove exhaust bump, port matched, stock valves hand lapped, new seals
performer intake with spacer (unless I can find an RPM / RPM airgap cheap soon)
4777 holley carb
duraspark distributor
shorty headers

AOD with 2.84 first gear ratio gear set
TCI streetfighter converter
8.8 axle with rebuilt traclock 4.10 gears
G60-15 M/T DOT cheater slicks

Street / strip application - I will have taller all season street tires for highway use.


John
Milner351@comcast.net


    
This message has been edited by milner351 from IP address 136.1.1.101 on Sep 22, 2009 8:02 AM


 
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  1. Re: E7TE valve springs lift limit? another budget roller 302 build up - bmcdaniel on Sep 22, 8:55 AM
    1. Re: E7TE valve springs lift limit? another budget roller 302 build up - John on Sep 22, 9:03 AM
      1. Some.... - Bob on Sep 22, 10:09 AM
        1. Re: Some.... - John on Sep 22, 11:34 AM
          1. Reply: - Bob on Sep 22, 12:00 PM
          2. Re: Some.... - John on Sep 22, 12:03 PM
            1. springs'n-things - Fletch on Sep 22, 1:13 PM
            2. Some thoughts include: - Bob on Sep 22, 1:33 PM
              1. Cam and springs are on the way - John on Sep 23, 10:28 AM
              2. THANKS - John on Sep 23, 10:59 AM
                1. Update - John on Oct 21, 12:23 PM
                  1. That...... - Bob on Oct 21, 12:47 PM
                  2. dist gear - fletch on Oct 21, 1:13 PM