Getting the car properly tuned can make a huge difference.
For now, you are better off just buying a wide band reader & see what your A/F ratois are.
http://cgi.ebay.com/ebaymotors/Innovate-...sQ5fAccessories

That way, you will be getting more aquanted w/your Holley carb & how it reacts w/jetting changes,pump squirter changes, accelerator cam changes, air bled mods etc.
MBHD

[quote=snowman4839 http://cgi.ebay.com/ebaymotors/AUTOFAB-6...sQ5fAccessories
I know his 408 with that cam should make more power
So how does the steering attach to that setup??
No I don't and what would it do?
Well with even my moderately advanced timing, my engine strains to start but that's what I used to run (advanced til just before it pings)
Stock for a 250 is TDC or 0 degrees (and it runs terribly at if it's set that way)
Alright. I'll try to find someone to tune it. Would it make that much difference?
I looked for a wide band O2 reader and can you reccommend one that doesn't cost like $150??

I have an offy intake with the holley 390 elec. choke [/quote]

12 port SDS EFI