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Nice! On your way with an almost stock 5.0L HO and 11's. Gotta love it. How are you controlling timing? I bet you're just hitting 3rd gear at the traps, and you need much lower - or a bit higher - gears to trap at the top of 3rd or 2nd gear. Which way are you going to go?

David
 

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sweet man, looked like she left straight n quick,Sounded like the R's dipped a little after u shifted into second though otherwise awesome man
 

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Nice. Yeah, anybody's crappy aftermarket heads will put a stock block turbo 5.0 fox into the 10s. Have you run a plot on your compressor map to verify you can push the greater volume at the same pressure at reasonable shaft RPMS?

David
 

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OK I just checked on your combo and ran the numbers. Your .60 AR compressors should be fine up to ~15 psig with TW 185s, at which point you'll have had to face other issues from excessive power anyway. ;)

David
 

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Yes, but your wastegates will compensate to run the same manifold pressure. It's the belt-drive superchargers that see the pressure loss without a pulley change, yet better power at the lower boost level. So, I would suggest dropping to 6-7 psig so you can re-tune to the new flow. You'll probably get to push timing up a few degrees as well with those heads, but tuning will tell. Check your plugs religiously on the return road if you have a pullout spot until you get dialed-in. Are you using more octane (fuel blend) at the track and 10 pounds or pump gas?

David
 

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Don't forget it's easy to get gasket and seal leaks with boost and the higher cylinder pressure if your breather system can't get the excess crankcase pressure out. A remote oil vapor separator (catch can) is the word of the day if you don't already have one, along with a positive-sealing PCV valve to prevent boost pressure from blowing into the crankcase. SuperCoupe PCV valves (Fram FV315) are an inexpensive example.
:tup:
David
 

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Already got a turbo t-bird PCV valve on it now and am way ahead of you on upgrading the system via catch can etc. ;)
we turbo thunderbird guys would install a one way check valve in the pcv line from a chrysler van brake booster when running more than factory boost. the pcv's would just leak almost regardless.

I so want to do this with my 65.
 

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Discussion Starter #20
I actually have done away with the PCV valve and just ran vents on both valve covers after having to switch to tall covers in order to clear the 1.7:1 rockers (no girdles) I have a few friends that have the same setup and this has worked well for them so I adapted it. Still working the bugs out of the new combo.
 
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