Thread: Egr?

Tweet

Yeah, I have a Va Title for a 1929 Ford Roadster (I even have plates for a car that is incomplete in my garage!), and I suppose since the non-EGR intake is 50 state legal for most SBC 350s the only problem will come if someone matches the motor number to a year list with models. My Chiltons manual for '63-'82 Corvettes does list Corvettes with EGR. Since I am only interested in low speed torque maybe the easy way out of this problem is to just put the stock iron EGR manifold back on? The cam is rated at 1000-4200 rpm and some dyno studies I have seen on the Chevy Performance site

(http://www.73-87.com/chp/gm350.htm)

show that the non-EGR Performer intake actually loses torque in the 2000-2500 rpm range compared to a stock iron intake and that is the range I will be cruising in with the 2.79 rear gear. Maybe this just tells me to dip the iron intake and paint it Chevy orange like the rest of the block and then I will really have almost a stock 350 with headers but it will still be more than I would have had in my memories of a flathead even with a 4" crank, so the light body should still move OK on the Interstate! (Air resistance with '29 fenders may be the limiting factor!) On another thread regarding painting with a brush, I recall flooring my '31 Fordor on a downgrade on one of the very new Interstate Highways (I-76 just west of Phila, the infamous Schuykill Expressway, aka Shortkill Expressway) in 1954 and being disappointed that it only did (a rather wild) 64 mph. Years later when I studied Model-As more I found out that they were only rated at 62 mph stock! Thus If I can cruise at 65-70 on modern interstates that will be OK and if the traffic response is from boggesville, I will then add a 3.55 rear gear and then take whatever mileage I get (15 mpg?) noting as several of you have commented that this will not be a daily driver in any case. Thanks, maybe you have helped me figure out that I can just put the iron manifold back on. On the other hand I can bite the bullet and buy the more expensive and more complex Edelbrock 3701 EGR manifold. I will think this over but the dyno runs in the site listed above say I will actually lose torque in the low rpm range. Anybody out there know tricks to improve low rpm torque now that I have a 194/204@0.050" cam? Will small diameter tube headers (1 1/2" ) improve low rpm torque?

Don Shillady
Retired Scientist/teen rodder