062 Vortec Heads vs Large port 206cc Vortec Heads

[1980RS]

After poking around on the ole net a bit...... I see that the OP is going to be trying Heads that have nothing to do with the ones I posted about above.
So...... sorry for the hi-jack.

Well, not quite true. While the Fast burn heads are a little different the heads do share some similarities. I decided this will be a better option on the 406 as this allows me to use my next cam with the new heads after the test with the little cam.

Hi Bob,
Running 10.90s @ 120 mph means you have your car set up well.
Would you be willing to share some more information on your car,converter, gears,tyres cams etc,I like the way you test at the track as I am in similar position with track testing.

I will send you the low down on the car.

[1980RS]

Bob, I'm watching and learning closely as this MIGHT be right up my ally.

Due to some financial commitments, I might HAVE to take possession of a '78 Z28. It's a nice car, 4sp with a 12 bolt. Anyway due to the weight of these cars, I would probably go 406/408 (400 sb GM 2 bolt block). I would like to do a budget pump gas motor, probably reusing the OEM crank after checking and either 5.7 or 6.0 rods. Just depends on the deal for rod and pistons when the time comes.

So with that being said, I was sent some info from Team Chevelle site where another guy used stock906's on a mild 406 and went 11.60's. He then swapped to ported 062's and went 10.92 @ 119.67. Actually, are you the guy from Team Chevelle?

Anyway, I like the results and was looking around for Vortecs, either 062, 906 or the 206 cc large ports. But also wondering if in my case, I would be better running Jegs 195cc SB alum heads?? Seeing that I have a AFR Titan dual plane for it, the Jegs 195's (that I'm told are actually renamed Profiliers) might be about the same cost as me sourcing and doing up the Vortecs?

Your thoughts? I'm not a sb guy so I don't know much on these.

Thanks, John

Yes, that would be me. I was going to sell the Large port heads last year and when I told people what I wanted they all laughed at me, I also told them the valves are worth more than the castings and got the same. I decided after that to do a little mild porting and redo the crappy GM valve job and use them. Would have been this year but I decided to play with that darn BBC I put in the car, it worked good also.

[Monza355]

Well, not quite true. While the Fast burn heads are a little different the heads do share some similarities. I decided this will be a better option on the 406 as this allows me to use my next cam with the new heads after the test with the little cam.

Hi Bob,
Running 10.90s @ 120 mph means you have your car set up well.
Would you be willing to share some more information on your car,converter, gears,tyres cams etc,I like the way you test at the track as I am in similar position with track testing.

I will send you the low down on the car.

It would be interesting to see what the combo is. Because the only thing you’re going to change are the heads right ?

At least i’m looking forward to see what it does, the 062 Vortec combo did great !

[67 Nova]

1980RS, sent you a PM.

[67 Nova]

Any updates??

[1980RS]

Any updates??

Racing has not started here yet. I will be doing the final test on my peanut port engine first, then I will put the 406 back in to make sure it's still running good, next will be the 206 Vortec head test. Heads are all done ready to go.

20210315_171121.jpg

[F-BIRD'88]

A lil quicker.. A lil faster.

[1980RS]

A lil quicker.. A lil faster.

That's the plan, test the same short block with the better heads then add a different cam with a better profile. Should produce some interesting results or could be a complete dud

[67 Nova]

I highly doubt a dud!

I would consider Vortec heads if the had the duel intake bolt pattern as I read some did, so I could use my AFR intake? The way things are going the need to keep this car as stock looking as possible is the key. I would have to get the conversion kit to put the gen 1 valve covers on a Vortec head though.

[F-BIRD'88]

The vortec head intake ports are taller so the old intakes don't fit and the floor approach is wrong anyway.
The centerbolt covers don't leak.. If you want to go vortec do it right. Lots of vortec intakes and good looking covers.

[1980RS]

I highly doubt a dud!

I would consider Vortec heads if the had the duel intake bolt pattern as I read some did, so I could use my AFR intake? The way things are going the need to keep this car as stock looking as possible is the key. I would have to get the conversion kit to put the gen 1 valve covers on a Vortec head though.

My Large Port heads have both intake and valve cover patterns so they are a sneaky set for sure. I did put my 300-25 on it for testing and it was still off compared to a conventional head. I will use my Super Victor with the Vortec pattern fits pretty good. Would be cool to make a sleeper 406 out of this and toss it in my street car. Sure would give my buddy with his 385 SBC with AFR 230's a run for his money, he hates anything I build now.

[steve cowan]

I like the idea of track testing as well,can you give any information about the strip dominator as I have been doing one to go with my 180 darts.
Is yours ported??

[F-BIRD'88]

There is a holley single plane intake for vortec heads.
Looks like and same height as a Vic Jr.
Good price.. Holley # 300-264 (vortec)
Shorter than a SuperVic and Hurricane SP Vortec manifold.
Another choice to play with
https://images.holley.com/300-264_03.jpg

[67 Nova]

Bob, I think I should have just bought your 400 VORTEC deal complete.......

Block's in shop now, Pistons are hear, rods supposed to be in today. I'm using GM crank and block, ARP main studs and Ohio's 6" Street/strip rods. Pistons are Wiseco flat tops.

Heads, just not sure? Jegs 195 or ATK 210's probably just as this is a budget street driver car. Intake is AFR Titan dual plane (if I can get it to seal up right) Going with Holley Sniper EFI.

For a cam, I'm thinking the Edelbrock 2201 Hyd roller? 1,500 to 6,500, 539/548, 234/238 @ .050.

What are you running for balancer? RPM range?

[Monza355]

Bob, I think I should have just bought your 400 VORTEC deal complete.......

Block's in shop now, Pistons are hear, rods supposed to be in today. I'm using GM crank and block, ARP main studs and Ohio's 6" Street/strip rods. Pistons are Wiseco flat tops.

Heads, just not sure? Jegs 195 or ATK 210's probably just as this is a budget street driver car. Intake is AFR Titan dual plane (if I can get it to seal up right) Going with Holley Sniper EFI.

For a cam, I'm thinking the Edelbrock 2201 Hyd roller? 1,500 to 6,500, 539/548, 234/238 @ .050.

What are you running for balancer? RPM range?

I like this combo you have planned. I would personally go with the 195cc head. Even though it’s very tempting to go with the larger 210cc head on a 400 cid engine I think the combination of parts will work very well with the smaller head. Especially if it will be used on the street as well as on the strip.

I have built similar street/strip 406 with stock block and crank. I used the Pioneer SFI dampener. But since then them dampeners seem to have skyrocketed in price. It does cost over 300$ today...