fastlt1

iTrader: (4)

What is the best options for junkyards heads for a 94 TBI 350 truck?
I think I read somewhere TPI corvette heads where 1st then Camaro TPI. Anyone know for sure and what years? Thanks.

violent_celerity

well 87-93 camaros/firebirds with 350's would work. i think vettes got the tpi in 86 and got the LT1 in 93 just like the f-bods. you might also consider some vortec trucks heads. if you do, grab the intake too. vortec heads would make alot more hp, but the torque wouldnt suffer like it might with those other 2.

My01SSCamaro

iTrader: (1)

vortecs, are great heads all around they make good torque and hp, but are limited to lift without modifications i think about .480, the tpi's started in the vets in 85, and in the f-bodies in 86, and the lt1 in vetts in 92 and fbodies 93, and the ls1 97 in vetts and 98 in fbodies the vets have always been one year ahead, none of the tpi heads are ganna be much of an upgrade all of them pretty much suck they are alittle better due to the non divider in the intake port like on the tbi heads also known as swirl port heads they really suck, your best bet would be to pick a set of vortecs up with a vortec intake so you can still use your tbi, there are abunch of guys on here that have vortecs for sale for a good price,

fastlt1

iTrader: (4)

Is vortec heads and intakes a bolt on swap? What year trucks do I need to look for? Thanks.

violent_celerity

96 to 98-2000 for hd's. they can be hard to find, but just do a little searching and you can find them.

fastlt1

iTrader: (4)

Summit recomended these.
http://store.summitracing.com/partde...0&autoview=sku

If I use vortec I have to use this intake.
http://store.summitracing.com/partde...5&autoview=sku

jmm98LS1

iTrader: (28)

I would go with a set of vortecs over those. Check out ebay, there's always several sets on there for lots less money. For cost comparison, I just picked up a set of 906 casting vortecs for $355 off ebay. They are fresh from the machine shop with new stainless valves/valve job and look brand new. After machining costs to cut the valve guides down & tap for screw in studs, I'll have ready to bolt on vortecs with comp beehive springs good to .600" lift for a total investment of ~$550. Now that's bang-for-the-buck, vortecs are hard to beat.

1997bird

iTrader: (2)

The vortec heads are close to 40 hp bolt on over the TBI heads. They are hard to beat for the $, if you are wanting brand new heads, www.SDPC2000.com has better pricing than Summit.

redbandit98

iTrader: (13)

plus sdpc kicks ***.

Beaflag VonRathburg

iTrader: (176)

What sort of casting numbers would someone look for? Any vortec heads particuarly better than others?

I'm looking on ebay and see quite a few 906, 12558062 and, 12558059.

fastlt1

iTrader: (4)

But that aftermarket intake is what I need to put my factory TBI stuff on?

1997bird

iTrader: (2)

Yep!

The stunningman

iTrader: (47)

062's the ones with the saw tooth pattern on the front. The 906's with the single hump have the restrictive hardened exhaust seat (more $$ to fix).

jmm98LS1

iTrader: (28)

Stay away from the 059 castings, those are 305 vortecs. The 906 and 062 is what you're after, for all intensive purposes they will perform equally.

1997bird

iTrader: (2)

You might want to read this info. http://www.sallee-chevrolet.com/Disc...tml?1048253397

psy4s

You can get a great set of vortecs for
12558060 Cast Iron L31 Vortec SB Chevrolet Cylinder Heads Assembled $269.75
At
http://www.sdpc2000.com/catalog/3129...nder-Heads.htm
They also offer a set that have the guides cut ans Z28 springs installed to increase lift
SD8060A2 Vortec SB Chevrolet Cylinder Head w/ Valve Spring Upgrade $339.95
Stock vortecs only allow a lift of 0.45 this upgrade will allow a lift of 0.525 for much less than having it done at a local shop. The base vortec head they sell is a new head cheaper than having old ones refinished at any local shop.
This is something to think about.

psy4s

This may be the best way to go,
SDPC also offers a total kit which includes Vortec Head Kit, TBI Intake, and all gaskets for $1,079.95
Part # SD8060TBIH

http://www.sdpc2000.com/catalog/2172...ke-Headers.htm

This could be a way to go since it leaves nothing to chance. You do not have shipping costs to a dozen places, and you will not come up against something you need you didn't know about.
"Vortec cylinder head kit provides you with everything you need to install the new Vortec heads on your vehicle. The following kit includes assembled Vortec heads, head gaskets, GM head bolts, GM stamped steel rocker arms, intake manifold, intake gaskets, 12 point intake bolts and additional required components as stated."
This kit is for use with headers and includes EGR adapter #E2899 and EGR adapter fitting #12552329. Headers not included.

NemeSS

iTrader: (127)

i was given 11 sets of 062 and 906 of vortec heads, but they seem to look identical everywhere, supposed to be the same, i believe.

The stunningman

iTrader: (47)

Personally can't care less what the magazines say. Every set of 906's I have got had the hardened seat which hangs over into the exhaust flow exiting. Anyone that has truly worked with both castings can easily distinguish the stock seat difference. 062's are the standard production set to be looking for.

Intake flow between the 2 should (will IMO) be identicle. Exhaust flow can be equaled though $$'s spent.

"there are only two Vortec castings, 062 and 906. They both flow identical intake and exhaust. There is however, one variation on the 906 casting which has a single-angle Inconel exhaust seat for HD use on 3/4 and 1 ton trucks. This head flows only slightly less than the other two on the exhaust (the intake is the same for all Vortec heads) up to .100" lift, however the difference is so slight it doesn't appear to matter any. These are the heads I used."



****So basically IF you happen across a set of 906's or 062's that DO NOT have the pressed in hardened seat on the exhaust side you will be bucks ahead.*****

Beaflag VonRathburg

iTrader: (176)

Feel like donating to the needy? Want to give me a set?