What year did the SBC have vortex heads?

[BangkokDean]

I was always under the impression that the center bolt valve cover heads were vortex heads. But I really have never had one so ?????

 

[Twin_Turbo]

No, center bolts came in 86/87, intake bolt angle changed to 72deg for the center 2 bolts too.... Except on the vette, it always retained the 90deg olt arrangement. The changes were for better gasket sealing..

The vortec heads are a raised runner head, they came in 96. Basically it's the same as an LT1 head, same intake, exhaust and chamber in a normal water jacketed head.

 

[mrvette]

But yet with just redrilling a LT1 intake, I fit it on a L98 engine....

the dizzy mount was the worst of it, the surprise to me was the intake passages lined up....

:beer:

 

[BangkokDean]

What motor do you think this is? Advertised to be 400hp.......

 

[Ozzy]

What motor do you think this is? Advertised to be 400hp.......

L-98 with lots of bling

 

[mrvette]

What motor do you think this is? Advertised to be 400hp.......

L-98 with lots of bling

355-383 I can't tell if stock runners/induction or aftermarket....I had large runners and a edel intake on mine, looked pretty much the same....

:beer:

 

[clutchdust]

Agree with Ozzy. 1986 to 1991 L-98. Judging by the intake, I would be real surprised to see 400hp. Maybe 400ft/lbs of torque, but I really doubt 400hp.

 

[BangkokDean]

OK L98 so what heads does that motor have?

 

[mrvette]

OK L98 so what heads does that motor have?

I have had 3 sets of heads on my basic L98 truck roller block, 993 iron, Edel, and now #113 stock aluminum.....which have outlasted and been more trouble free than all the others combined....knock on wood....

 

[Twin_Turbo]

impossible to tell from that pic what heads it has. Runners look stock but may be TPIS.

 

[CNC BLOCKS]

The Vortec heads came out in 96 I believe!!

 

[BangkokDean]

So is there some way to see if they are vortec heads by the markings on the front of the heard?

 

[JE Caudle]

Here is a link to some very good information about vortec heads.
It provides photos and part numbers. http://www.chevymania.com/tech/vortec.htm