Small block head ID question

Reply Subscribe

Thread Tools

Search this Thread

Oct 21, 2007 | 03:47 PM

mr nasty

Thread Starter

Pro

Joined: Sep 2006

Posts: 671

Likes: 0

From: McCook Nebraska

Small block head ID question

I asked this in Tech/Perf but no answer so I thought I would ask here. I have a 1969 350 horse 350 4 speed car with 61,000 miles. I pulled the valve covers off today and the heads are stamped J 9 2 and 3991492 which my book says is 1970 350 LT1, camel hump with acc holes, 64 cc chambers and straight plugs. Are these the right heads for my car? If these have the press in studs instead of screw in are they 1.94's instead of 2.02's?

Thanks,
greg

Oct 21, 2007 | 04:05 PM

0Road-Race Vette

Former Vendor

Joined: Oct 2007

Posts: 2,092

Likes: 2

From: walpole ma

the ncrs guide doesnt call for that cylinder head in 69 or 70 vettes.I know for a fact that the heads for your motor should be 186 or 187.So i would definately say those heads are incorrect.

Oct 21, 2007 | 05:15 PM

mr nasty

Thread Starter

Pro

Joined: Sep 2006

Posts: 671

Likes: 0

From: McCook Nebraska

Thanks Road-Race Vette.

greg

Oct 21, 2007 | 08:38 PM

DZRick

Le Mans Master

Joined: Jun 2005

Posts: 5,447

Likes: 3

From: Syracuse NY

492 heads were an over the counter only performance item, never offered in a production vehicle.

Damn good head in their time.

Reply Subscribe

Reply Share

First
Prev
1 / 1
Next
Last

Forum Jump