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: add on accessories...


big_gil_on_the_hill
10-12-2005, 01:38 PM
Once again I am asking questions. Which carb, intake and headers should I purchase for my engine i just had rebuilt. Engine is '93 chevy 350 out of a tahoe, I have a high volume oil pump, a torker cam(442/446) or somthing close, dish piston heavy duty valve springs and a few other internals. the builder said it should put out about 300hp.

I am thinking edelbrock air gap intake, with the demon road jr(625cfm) carb and ceramic coated shorty heads. I am not interested in the smog side because it will not be registered where I am at in SOCAL. Also will the stock distributor work?

any other advice will be greatly appreciated. I am also planning on a 700r4 conversion. looking for a good source here in LA/Riverside/San Diego area. and ultimately a posi rr with 373. I have some money now and need to finish this up before my wife checks our account.(lol)

PaPa Johns 77
10-12-2005, 08:57 PM
8) Hey Gil ! Sounds like a plan! I think you might be a little small on cab size though. I'd personally use a 750 cfm. Then you can always jet it up or down to your engine. Dish pistons huh, sounds like somthing that cries out for a little NOS!!! :cool:

PaPa John

WhisperPC
10-13-2005, 08:31 AM
The air-gap intake is probably a bad choice for a carburated car on the street. This is because it removes the heat source from under the carb. This heat source helps a street engine to vaporize the fuel. EFI and race engines approach this issue from different angles.

I assume that the numbers you listed for the cam are lift. This will likely put the duration around 200-210. This duration will work best with a dual-plane intake. The short duration will also limit the high-RPM usage of the engine, so 600-650CFM will be fine.

Running with an EGR valve should have a slight possitive effect on the fuel economy during cruise. I'd leave it in place. Also, the fuel vent lines and PCV should be left in, as they REALLY help to clean up the overall emissions, and don't hurt the performance significantly.

Changing the carb and intake should have no effect on the distributor. If it works now, it should work properly after the change.

PaPa Johns 77
10-13-2005, 09:19 AM
8) Hey Gil! If you want to build a California smogger he is right! But you said you are not interested in the smog side of things. As far as the crossover under the intake it heps the engine run better on cold starts. After the engine is warm the fuel is unessesarly heated and everybody knows that cooler fuel burns quicker and produces more power! I'd go with the air-gap rpm which is a dual plane intake. I also would use a 750 cfm carb which is roughly equal in size to a Q-jet.

PaPa John