I've got a line on a rebuilt 350 Short block. Standard stuff... somewhere around 9 to 1 compression, std bore/stroke, etc, for $300....

I've got an '87 305 TPI IROC.

Can I take this block... put in a TPI friendly 350 Cam... put my 305 Heads on it... 22# injectors, 350 chip....... and expect goodness?

I assume it will run... but IS this something I should do, over my 305?

 

That should work fine.

The only questionable thing is "to put your 305 heads on it." You might wanna try to find some used L98 vette heads or something... I do not know for sure, but I would venture a guess that putting the stock 305 heads on it would be a waste of time.

 

Your compression is gonna be pretty High with the 305 Heads.

Depending on the Shortblock you describe, It may be unstreetable.

Probrably not the best option _ but if your In a pinch will work.

If you have time (IE your 305 isnt Coming apart) Pick up the block and keep an eye out for some better heads.

 

14102193...87-up...305/350......1.94"/1.5" valves

Will those heads work?

 

is this a budget thing? or do you have a little $$$$$ to spend?

 

Aren't 305 heads more prone to crack when heat is applied?

Even so, I would find some vette heads. Junk yard might have some, they aren't that expensive, and if you save you can have them ported.

 

I could probably fund about $300 into the heads including purchasing them.

How much does porting cost?

 

$300? You are pretty much all set. A set of used vette heads is about $400 I believe . Porting would be another $100-$150 or so. A little over what you intended to spend, but would you rather wait and save an extra $200 and end up with a complete and total beast or go for it NOW with 305 heads and have a motor that was just thrown together?

Vette heads that are ported are very good heads and are very capable of 450hp. Kevin91Z (I think thats his name) has ported vette heads with an LT4 Hotcam and is putting 425tq to the rear wheels!!!!

With that said, do you wanna save an extra $200 or just throw the 305 heads on?

 

I've been pricing the Vette heads and I can get them for about $300. Does this dude you speak of have TPI? Because if he does I might just invest in that cam.

If I can get someone to buy my freakin truck then I got the money for block/cam/ported vette heads.

And I thank you all for your info too! (you really think she'll be a beast with those heads?)

 

333882.....74-80...350/400......76cc chambers
"They were on my 85 Corvette for over a year before I yanked them for some SportsmanII heads :-) They will work just fine with TPI..."

Found those use for $200 shipped to me. How would that work compared to L98 Vette heads?

 

Would Ported L98 heads be more benificial than if I could get my hands on a set of Trickflow SBC heads?

 

Not sounding sceptical, I just want to make sure I get the best head, for the money, that's going to work... Here is a post I read with someone saying this about putting L98 Vette heads on a 305... Should apply to a 350:

https://www.thirdgen.org/techbb2/sho...vette+heads+cc

They will work better than L98 heads because they have a 60 cc combustion chamber and won't lower your compression ratio like a cast iron L98 head will. But remember, vette heads, even 87-91 did NOT change the angle on the four intake bolt holes in the center. So you'll have to get the holes inlarged on you intake to make them match. Also, corvette heads run the EGR differently, and they have a raised exhaust port which could possibly cause problems sealing to the manifolds. But don't misunderstand; they're a great head if you are willing to make them work.

 

Okay I did my research... I just need to know how this D port thing will work with my Hedman headers.

 

I honestly know nothing about the D port issue.

However, I can tell you this: I had L98 iron heads (which I would venture to guess have the same exhaust port shape as your 305 heads) and now I have the ZZ4/L98 aluminum vette heads and my same SLP 1 5/8 headers fit both. That is all the help I can provide regarding that issue.

 

Was thinking today and talked to another car guru....

Aluminum and Iron (heads and block) expand and contract at different temps.... What would be the reprocussions of such....


Friend says that at about 50K miles... heads have issues from being on that block. Hense why you see alot of Vettes at about that mileage up for sale or in the shop....

A set of L98 port/polished heads sound great to me right now~!

<<<< very frustrated

 

The vette's you see in the shop at 50k are not taken care... as a matter of fact, they probably have the **** beaten out of them regularly. If they were no good, they would not be used.

Take an LS1 for example. The whole entire driveline is aluminum. Haven't seen many problems from them, even when they are beaten on.