hello guys i jus got a good deal on sum vortec heads 906 and i was wondering can i take the Crane 1.6 roller rockers, Roller lifters, Comp Cams springs, retainers, and locks and the screw in studs off of my 041 heads cast iron heads and replace it and put it on the Vortec heads?? i no i hav to get sum machine work done on the heads because i wanna go wit a LT4 hot cam or sumthing a lil bigger

 

Yep, you can move it all over there. I think vortec heads usually used SA rockers, so you'll need guide plates.
And yea, machine the bosses down so you can use your comp springs, and have that big lift cam in there.

 

man thanx so much for the info i really apperiate... im buildin a385 stroker...the block is was used in 69-79 Corvettes the guy is charging me $950 i hav a super vic intake i got for 150.00 of ebay dats in good condition....these are the specs on my future build

4 Bolt Mains
Block Knotched for 400 crank
Bored .040 Over
Scat Forged Steel Crank 3.75" Stroke
Corvette Rods
Keith Black Hyperuetectic Pistons
This comes out to be 385 Cubic Inches
All balanced
New Rings
New Bearings

is this a pretty good deal wit my 350 vortec heads and a 770 avenger holley cab p/n 0-80770...im tryin to put out at least 400hp

 

he is charging you $950 for the block???

you understand corvette dont mean squat...right?
they put that same block in thousands of trucks...

you can go to a junk yard and pick up a core for probably 75...

 

its not jus the block its a short block with the info i gave above 385 stroker

 

vortec heads can only use self aligning rocker arms and NEVER use sa rockers and guide plates, must also use center bolt valve covers. If you use 1.6 rocker arms you must enlargen the pushrod holes in the head with a 1/2" drill bit so they don't rub on the inboard side. Great performance heads for the money, but on that many cubes I would enlargen the intake and exhaust valves since the machine shop is already gonna do work on them. lt4 hot cam is a good choice for the vortec heads.

 

Must use self-aligning, or guide plates. But, as you said, not both. Originator didn't mention guide plates, but I would guess with 041 heads they were non-self-aligning rockers, so guide plates would be indicated with the Vortec heads. If the screw-in studs on the 041 heads didn't have guide plates, you'll need different studs.

I've only heard that with slotted, non-self-aligning rockers. I was under the impression not needed with later round hole self-aligning rocker type heads. Can't hurt to enlarge them, though.

 

ive got a 89 5.7litre iroc-z motor bought v-tec heads for it lt4 hot cam sa rockers stock push rods cut the bosses just got it running 3 days ago started right up. sound great