John,
For the conversion, your article calls out 1/2" drilled and pipe tapped holes for the 3/4" nipples. I hope this is a typo. Should it be 3/4". I'm pretty sure I know the answer, but I thought I'd point it out so it can be corrected. Thanx for the great info.



------------------
Bob '89 Ram Air Formula 350

And until that time when death won't wait, let each man rage against his fate. (O'neill)
My car's homepage
Reader's Ride

 

Nope, no typo. Maybe I can make it clearer though.
I did use 3/4" heater nipples(as short as possible-NAPA). That dimension is not the thread size, it's the O.D. of the fitting. The thread size is 1/2"-14 NPT.
I drilled and tapped for a 1/2"-14 NPT but do not drill a 1/2" hole. I drilled a 23/32" hole before tapping.

------------------
86 Camaro Sport
LT1 Induction
383 Speed-O-Motive Crate Engine, Raptor 700R4 Tranmission, Trick Flow Twisted Wedge G2's, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Hooker Cat-back, Serpentine Belt Setup, Dual IROC Fans, Jamex springs, 16" IROC Rims, 36mm/24mm Sway Bars, Global West Steering Brace. Hotchkis Rear LCA's,Panhard Bar and SFC's.
My Camaro Project
Moderator at SE ThirdGen

 

Thank you sir...

 

[This message has been edited by RCR (edited November 13, 2001).]