Best head bolt on application?

[Boosted]

I am rebuilding a spare 4.3 so that I have an assembled bottom end to back up my stock powerplant that is pushing 147K

Engine will have Federal Mogul forged pistons, eagle rods and a 4 bolt main conversion. Nothing crazy, just sound bottom end.

My question is heads:
I have seen some posts, especially by jwaller that is saying 300.00 for the heads and 500.00 for the intake modifications. I can't justify that much and the time down (daily driver).

What is the best avenue for bolt on heads that accept stock Ty intake?
I have the heads from this spare 4.3 TBI engine, and the facility to port and polish on them. I also have access to manley valves. Am I going to be best off to have a machine shop 3 angle valve job these heads and port and gasket match them for the best benefit.

Opinions?

 

[jwaller]

I now have core intakes and heads in stock ready to go in almost every configuration. if you do a package deal I will give you a better price structure.

HTH.

L35's are a good first upgrade. I wouldnt waste any time of energy in stock heads.

 

[Boosted]

L35's in stock configuration?

Vortecs and lower intake modified and ready to go?

Prices for the above?

Did anyone ever do the cross section on a stock head like Myclone did on the Vortec? I couldnt find it in search.

 

[Loeryder]

I don't think the stock heads are worth cutting up to research even.

In my case I am in the same boat, moneywise.
Stock block so I am not ready to build a motor and I want bolt on heads with some benefit over stock.
I am doing L35s ported polished with back cut valves, 3 angle valve job, new seals, stiffer springs, and 1.6 stamped steel rockers.

Now if I had some decent funding the story would be WAY different.

L35s are a cheap bolt on that requires no intake mods.

Other than port matching which isn't required but is recommended with any head swap.

 

[Boosted]

know anyone wanting to get ride of a set of L35s?

 

[Loeryder]

I'd bet theres a couple dozen sets within a few miles of you.

Your local boneyards will have them, check for screw in studs. Not the only identifiable feature, but I would consider it a must when replacing stockers.
Mine are GM casting # 14099064.

'92 & '93 CPI head (L35 type) have four possible casting nos. available #10238181, 10077626, 14099064, & 10240209
that all have an 8 degree top angle cut in the ports and screw-in rocker studs, with the top of the ports having a small circular cutout for the injector holes in the intake manifold.

Check out this post, it has a bunch of info on head #s.
http://www.syty.net/phpBB2/viewtopic.php?t=21649&highlight=l35+casting

Lots of posts on L35s on here.

 

[jwaller]

know anyone wanting to get ride of a set of L35s?

I have a set of L35's but they are used (500). big valve (2.02 & 1.6) big spring. I also have a rebuilt set of big valve big springs (600)