Thread: A SBC build

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the heads have 10 degree locks and retainers

step up 1.750 stock for a small block @130 lbs to lite and coil bind is 1.200 at 385 lbs 500 lift is pushing it ? you will need a hire setup like 1.850

Originally Posted by pat mccarthy

step up 1.750 stock for a small block @130 lbs to lite and coil bind is 1.200 at 385 lbs 500 lift is pushing it ? you will need a hire setup like 1.850

Are the springs shimmed? You could gain a little height but give up some pressure, 385 is plenty with the valve open I would think.

I now it's not a chebbie, but the Pinto wagon with the 289 and 5 speed I had about a gadzillion years ago ran about the same rpm, crossed the line @7200. Was a long time back, but the lift was in the 520's and duration was split, both in the 280's. This was with the cast iron 271hp/289ci heads angle milled to 58cc. Maybe the guru's will know what that mini mouse would want as opposed to my antique blue oval setup!!!!

try this 247 252 @050. .507 .528 lc 112 or a round there

like i said i probably mis read it all ill ask the guy tomorrow to de-dumbeyfye it. <nice spelling huh> these are the springs that are on there specs from jegs on the k-800's 1.460'' Dia. Silicon Double Valve Spring with Damper,
Seat Load: 165lbs @ 1.850''
Open Load: 495lbs @ 1.150''
Coil Bind: 1.085''
Max Lift: .700''
Set of 16
571-K-800
like i said, theres just a sheet with a bunch of writing i dont know what i t all means! yes springs are shimmed .030

well i would want to see abit more then 130 on the set and the spring can not take much more lift and would want a hard shim under the spring stock set up is 1.750 with stock parts

Many moons ago, Schneider Cams had some really strong skinny block flat tappet cams, don't know if they still do or not. They had real good selection and price was reasonable, too. Used to be they could get you as close to a custom grind as you could get without paying the big $$$$ for a custom grind....

Pat, should you alter the valve spring pressures when using the new "trick of the month" cams with the higher ramp speeds???

Originally Posted by Dave Severson

Pat, should you alter the valve spring pressures when using the new "trick of the month" cams with the higher ramp speeds???

well how many sets of springs will he have to buy for that fast ramp speed he will not hold that heavy valve train down

Originally Posted by pat mccarthy

well how many sets of springs will he have to buy for that fast ramp speed he will not hold that heavy valve train down

Ok, I see... Didn't realize they would grenade the springs.... Thanks for straightening me out!

Originally Posted by Dave Severson

Ok, I see... Didn't realize they would grenade the springs.... Thanks for straightening me out!

well i just can not say but if he well go that way the springs will take it all parts need to be light or in time the springs will get killed i would but isky spring s and the lite lifters they have

Originally Posted by pat mccarthy

well i just can not say but if he well go that way the springs will take it all parts need to be light or in time the springs will get killed i would but isky spring s and the lite lifters they have

Some lightweight components would help it live a little better. Been out of the engine stuff for a lot of years, would like to try some of the newer stuff sometime....

just someone help me find a cam! the bumpstick is more important then many people think to many people saying keep it under .480 and to many saying got .650 i need to know about the mysterious bumpsticks!

the springs will drop off 10 lbs on the EX and i would like more on a hiwinder but before you get all ready to put that killer cam in thing have to not flex and if the pushrod are not the right size well??