racerx1976

Just wondering if anyone might have an idea on why my sbc acts like it wants to fall down when I try to stall it up now. The engine is a 355 ci with 58cc chambers, throat cut, bowl ported with 2.02/1.60 valves. 13.54:1 comp. weiand single plane intake, 700 dbl pumper carb.
Cam is .488/.510 in/ex. • 300°/310° Adv. Dur. • 112° Lobe Center • 81° Overlap.
3000 stall conv. With th400 tranny.

Used to have a crane fireball 2 292 duration .480 in/ex cam in it and it ran like a champ with a 750 com carb on it, besides just running a tad rich.

JimmySmith

MY opinion is convertor is too tight ,don't know anything about your car but I would GUESS at least a 4500 convertor. I also don't like the 112 C/L , I would want 106-104 Later J.Smith 4621 racing

p68ramair

i agree the converter is to tight depending on what the car is used for u need about 4500 stall or more

outlaw256

going to say stall also. and im wondering about that 400 tranny. anything done to it...

curtisreed

He has probably figured it out by now. It's been 5 months since he posted this.

It's odd that the date of p68ramair's post is the 2nd but it came before outlaw256's post dated the 1st.

annamarks

I would GUESS at least a 4500 convertor. I also don't like the 112 C/L , I would want 106-104 Later J.Smith 4621 racing

TheodoreThompson

Pelo que descreve, parece mais um problema de combinação do que falha isolada. Essa nova árvore de cames tem bastante duração e overlap, o que normalmente “mata” o vácuo em baixa e deixa o motor fraco ao tentar estolar no conversor de 3000. Pode ser que o conversor agora esteja curto para esse conjunto. Além disso, o 700 double pumper pode não estar https://estorilsolcasino.com/ bem acertado para essa configuração. Eu começaria verificando ponto de ignição, mistura e talvez considerar um stall mais alto para casar melhor com o novo comando.