engine upgrade to do list - please check

[Anonymous]

My 200 six threw a rod yesterday and so now all of the sudden it is time for me to do all of the upgrades I have been wanting to do. Here's my list. Am I missing anything or do I have something wrong? The motor is a 65 and the head is a 66 and I already have a clifford 6-2 header, MSD-6 and a Mallory Unilite distributer- basically everything I could do without opening it up- but now is the time!



1. Weld in port divider

2. Plane exhaust manifold surface

3. Mill block and or head- .055 total- take as much as possible off the block down to zero deck maximum then whatever is left off of the head. Shooting for 9.5 compression with a Fel-Pro head gasket.

4. Minimum overbore- just to clean up cylinder walls

5.Three angle valve job and hardened seats

6. Install '78 inake valves 1.76" dia.

7. Install '61 144 c.i. intake valves at exhaust 1.468" dia.

8. New valve springs- Napa part #212-1059 from ford 302

9. New pushrods

10. Adjustable valve train from early head

11. Stock pistons- 7cc dish

12. ARP bolts

13. Crane cam #H206/280

14 Timing gears and chain from a '70 250

15. Balance crank

16. Standard bottom end re-build

17. Offy 3x1 with weber 34ich

18. Install reconditioned balancer

 

[80broncoman]

The cam I would use is a crane part#510571 It has duration at .050 of
214 int and 222 exh 112 degree lobe separation and .435 and .450 lift.
just be sure you use springs that handle the amount of travel if you don't use the springs recomended by crane.
You could use the 260 cam but i think you might have to use a higher grade of fuel with it.
Jim

 

[Falcon62]

I don't think the 260 cam would require a higher grade of fuel as much as the desired goal of actual 9.5:1 compression. Gonna be a bit tight on regular.

 

[Anonymous]

I thought that was the common set up. Actually I have heard a lot of guys on this board talk about milling .060- I thought. And if at stock we are around 9.0- then you take back the extra gasket thickness of .25 that puts you somewhere around 9.5 right? wrong? I don't know. I won't have a chance to c.c. it so what is the common amount to mill?

 

[Anonymous]

O.k. I just learned that the stock compression ration is around 8.1. That is why everyone seems to mill .60 which puts you a bit above 8.7 (if the rule of thumb is .60 mill = 1 comp. ratio point). Right?

 

[Hot 6t Falcon]

Concerning your item #5. Besides the three angle valve job have the intake valves "back cut"

I posted a good picture ot this in the "What's a three-angle valve job" sticky post in the Hardcore section. Look at the valve in the last picture.

It should only be a couple of bucks per valve to have it done

It sounds like you've got a GOOD motor planned!!!

Good luck with it

 

[Anonymous]

It sounds like you've got a GOOD motor planned!!!

-thanks in large part to your book!