350 Chevy engine advice

[Deaken]

So I have a 85 GMC Jimmy that has a burnt valve, so I'm at a crossroad of do I do a valve job on the current factor heads or upgrade to a set of double hump heads/vortex/etc? It has a crate motor with ~40K on it. It had a crack in the manifold at the head of the valve that is burnt so I'm positive that is want cause it to burn the valve so needless to say a new set of manifolds or perhaps a set of headers are in order too? Now I'm not a big Chevy guy nor are any over my friends so that way I'm looking here for advice. Is it worth the extra cash to upgrade the parts or just rebuild the factory stuff? FYI I will need accessory mounts on the new heads if I go that route. Thanks in advance,

 

[Deaken]

And BTW it's used to do mild towing, under 2,500 lbs.

 

[Echo 1]

Check with Summit racing probably get a set of aluminum heads for price of double hump.

 

[Hasselhoss]

You can get the Vortec heads for $300 each. What would it cost to rebuild the old heads and have them checked and faced?

 

[Deaken]

If I go vortex I'd have to changeiintake also correct?

 

[PA4476]

If I go vortex I'd have to changeiintake also correct?

Not really. You just have to use a 3/8 drill to "re-posisition" the angle of the holes on the intakes 2 center mounting holes on each side.

 

[Hasselhoss]

If I go vortex I'd have to changeiintake also correct?

Yes, you will also need new valve covers and self aligning rocker arms.

 

[Hasselhoss]

Not really. You just have to use a 3/8 drill to "re-posisition" the angle of the holes on the intakes 2 center mounting holes on each side.

meh... for $200 I'd just get new. You could sell the old one for $100 on Craigslist.

 

[PA4476]

Your heads all have the same angle for the intake bolts, they all go in at the same angle. The vortex heads have the same angle on all except the 2 on each side right beside the carb, those 4 go in more straight up and down. I have put many a old model 4 bbl intake on newer engines and this is what I always done. Never had a problem.

 

[patracy]

A junkyard 5.3 could be had for $500. Toss on a intake and ign system then swap your carb over. 300hp stock.....