Quote:
Originally Posted by 5150  Ahhhhh..... Kiwi thinking!
Good idea on the fabrication, I am concerned though that with standpipes, under heavy braking oil will not retun to the pan so well  as no drains are in the front of the valley. I'll ask the engine guy, but I know what he'll say.... "You said you only wanted 300-350 HP, why the hell are you concerned with valley pipes"
The lifter bores were checked for index/bore, I'm not sure what the "CC LOUIE" mod is !!!!
Clue me in. 
Best,
Scott |
There is a large opening at the front of the valley (just behind cam sprocket) that will allow drainback under braking- so no dramas there. In reducing windage you gain 'free HP' the best kind, doesnt cost you anything.
The lifter bore mod is a groove in each bore from approx 3/4 height DOWN on the side adjacent to cyls 1234 (Ford). this allows a small jet of oil from the lifter oil gallery to spray on the cam lobe just before it contacts the lifter base . With the oil quality of today it is virtually a must with flat tappet cams & also helps street rollers as well.( If your engine builder is not doing this, he should consider it. Can be the difference between success & failure on the later aggresive cams ) Comp Cams make a tool for the job-pn #5005 for ford- page 379 in my Catalog with pic of principle. [[ In NZ being in a state of poverty we use old hacksaw blades with only 0.75" of teeth on each end & wrapped with a bit of tape to save the fingers, to cut this groove--about 0.010" deep by the blade wide seems to do the trick ]]
I recently fitted some new springs to a FT 351c that has raced for two seasons untouched & the cam & lobes were the best I have seen in a long time. This was a worst case scenario as the owner has a maintenance programme where if it drops off you do two more laps to decide if that bit was actually reqd. Wont even let the rockers off over the off season to give the springs some respite- all caught up with him this year though!!!!
Jac Mac