1.6's are available, you can even get roller tips too. But all Gen 1 small blocks with stamped rockers are 1.5's. Check the circle track mags, good high po stuff, reasonable prices....
Originally Posted by VortecCaddy
Does anyone know what the stock rocker arm ratio is for a 1990 chevy 350 with roller cam?
I am going to purchase some upgraded ones, any input is appreciated.
Best upgrade you can do. Get a set of Vortec 350 heads (NEW for $400-$450 at local GM dealer), 1.6:1 rollers ($200) and a F/Y Body LT1 cam (used free to dirt cheap, or get a modern Comp Cams grind $250) and you are looking at an easy 280 hp, maybe more closer to 300. Will mandate PCM tuning though.... All for less than $1000. All sorts of fun you can do with a 350 Chevy.
yes, the Fastburn heads dpnty have the low lift flow of the Vortec heads, but they do offer superior high lift flow comared to the Vortecs, ESP. on the exhaust side of things. The Vortecs exhaust port is poor when compared to its intake.
I would use a cam with way more lift than the stock F body or even a Y body cam.
This guiy neesds a cam with some lift to take advantage of his Fastburn heads.
The Hotcam will work, but be ready to use a higher stall torque converter to help with shift extension and loss of off idle torque.
I think a 396 or 406 shortblock and ported Fastburn heads will be needed to even get close to the 500hp mark, along with a pretty wild cam.