H/W 5200 problem

[buzzA4]

There have been alot of posts concerning frustration with H/W conversions.

Well, here's another one.

I did too many upgrades at the same time to be sure which component is the problem.

I'm gonna throw it out to your collective genius to help me out.

Started with a very nicely tuned newly rebuilt stock '66 200ci C-4 AT Mustang.

Added an E0 head milled to 52cc, exhaust port divider, DSII ignition, H/W 5200 and a CSC-264-10-DHS cam from FSPP (used 351W exhaust springs, not sure if they're good enogh for that cam, but that's a different post)

I wanted to upgrade piece by piece to assess each individual upgrade. But, long story short, I couldn't and threw it all in together.

Engine runs nicely in park. However, when I put her in gear she stalls. Once the car has been driven some ( around 20-30 mins) then she will idle in Drive but very roughly. If I shift to Neutral at a stop light, the idle is amazingly smooth.

I'm gonna resize the jets per the tips in other posts.

Will this solve the problem?

or

Is the problem related to my Cam and stock torque converter that is only added to the equation only when I shift out of neutral?

Thanks....Buzz

 

[lightnin-boy]

When I had my h/w 5200 on, I needed an 80 idle jet in the primary to make it run properly. The one I got came with a 50 and it wouldn't idle. I have since scrapped the whole setup for a Carter YF from a 250. Much better in my opinion for an unmodified log... and the seat-o-the-pants meter concurs...

Kirk

PS. I had a 264H clifford cam in my old motor with the holley weber and it idled like crap. When the motor died and I installed my current motor out of a 79 zephyr, I stuck with the stock cam and the idle improved remarkably with the H/W, I had the stock converter. I chose the stock cam because as we all know the head cannot breath and the cam couldn't do what it was supposed to.... So I got cappy idle and hi-perf gas consumption without the hi-perf output... I did not degree the cam however... [/code]

 

[Anonymous]

maybe a vaccum leak in the tranny plumbing?