Thread: Need a base line for my blower carbs, etc

Hey guys got another question. The Weiand manifold we have has two 1/2" plugs in the rear over the water jacket in the heads, one on each side of course. I know there would be no flow there but wondering if would be a place for a reliable water temp reading for the temp gauge? There is nothing on the front. Where did you guys install the gauge fitting?

On any blower motor, the thing to avoid 24/7 is going lean on fuel to the engine. When going to WOT with a blower, carbs that have not been boost referenced may read a vacuum signal between the carbs and top of the blower rotor that causes, whether on an Edelbrock with its rods and springs or on a Holley with power valves, the carbs to go lean precisely when you need maximum fuel flow. "Referencing" what the engine is...

2 750's is not too much carb at all as a matter of fact it is about the minimum for a 6-71 or larger blower. It's not about the fuel needed it's about not choking the blower. Roots blowers move air very well, you never EVER want to restrict the inlet side of the blower. Now as far as boost referencing, it is nice if you can, it's not a must. Leave the 6.5 PV in the carb you don't want to go higher, but may need to go...

WAY TOO MUCH CARB!! Get carbs like something in the 400 cfm range. Unless you like fire shooting many feet high from the carbs.

These work great for temp sensors. I use one for my main engine temp and the other will be for the heater. It seems to read a bit higher than the front ones but I also added the blower which generally will run about 10 deg warmer anyway.

You guys seem to know your way around blowers and their best combinations,,, I am putting together a 468 BBC 8.5-1 comp with gm oval port heads, a comp cams #11-414-8 grind #cb nx29hr-13, with hyd rollers, in- lift .566 ex .575 and have a B&M 420 blower, I am needing to buy some carbs soon, and and need some advice on what to get, I also want to install a nitrous plate system any advice?? [...

Quote: Originally Posted by Bad Rat You guys seem to know your way around blowers and their best combinations,,, I am putting together a 468 BBC 8.5-1 comp with gm oval port heads, a comp cams #11-414-8 grind #cb nx29hr-13, with hyd rollers, in- lift .566 ex .575 and have a B&M 420 blower, I am needing to buy some carbs soon, and and need some advice on what to get, I also want to install a nitrous plate system any advice?? [...