vortec heads and pushrods?

[mtnrat]

I have a set of the new small port vortec bowtie heads I want to install on my early 2 piece main 350. Can I use the same push rods?

 

[FreeBeeTony]

Re: vortec heads and pushrods?

What are small port vortec heads?

 

[RubberFrog]

Re: vortec heads and pushrods?

They are vortec heads with small ports.

 

[mtnrat]

Re: vortec heads and pushrods?

They are a new vortec head by GMPP.

SB Chevrolet Complete Small Port Vortec Bow-Tie Cylinder Head



GM Performance Parts? latest and most powerful iron cylinder head
for Street or Racing. This Vortec design Special Performance cast
iron cylinder head features revised intake and exhaust ports and is
machined for 2.00" intake valve and 1.55" exhaust valves. The deck
surface is .450" and features 65 cc combustion chambers, 175 cc
intake and 65 cc exhaust ports. All Vortec intake ports are taller
and narrower than early model Chevrolet heads. The valve cover
mounting holes are for both early model flange and late model
center. This head also includes intake manifold mounting holes for
both early model 6 bolt main and late model 4 bolt Vortec design.
The head is machined for 3/8" screw in rocker studs(included),
large valve spring pockets, and will accept up to .530" lift
camshafts without modifications. Heads are identified with the
Bow-Tie logo on the exterior of the head below exhaust flange and
Vortec logo on top of intake port area. They also feature GM logo
cast into bottom of intake ports.

 

[Bondo]

Re: vortec heads and pushrods?

You probably should go back to where you got That Info,+ Ask Them if the Valve Geometry is the Same with the old Pushrods.......

That's just something that I've always left up to My Machinist.........

 

[FreeBeeTony]

Re: vortec heads and pushrods?

Sound alot more expensive than the regular Vortecs I bought.

 

[John_S]

Re: vortec heads and pushrods?

Confirm as Bondo suggests, but I believe the GMPP's have the same geometry as any SBC head. Push rods length should be determined by lifter type. Another area I would check is sparkplug location with marine exhaust manifold.

Tony, I believe they are close to double the standard vortec head. I briefly considered them, before going standard. The small port GMPP outflows the standard at higher rpms, but for me the gain wasn't worth the extra cost.

 

[mtnrat]

Re: vortec heads and pushrods?

I will email the source. Yes, more expensive, retail $500 each, ebay $400 each.

http://www.sdparts.com/product/25534421/SBChevroletCompleteSmallPortVortecBowTieCylinderHead.aspx

 

[John_S]

Re: vortec heads and pushrods?

Just watch the shipping. Most ebay deals on the standard vortec head didn't include shipping. 50lb each heads don't need to go far to get the cost up there. Jegs and Summit were better deals with free shipping, but they do have a handling fee on the complete order.

 

[mtnrat]

Re: vortec heads and pushrods?

I already own them. Found a set on ebay. Shipping was $79 for both.