This is a double post from the tbi page also but, after posting there i figured that this may be the better place. If this is a big no no or someone has a problem with it feel free to delete 1 of them.

Alright guys what i've got here is a stock 1986 lg4 block with barely any miles on it (less than 38k on it). What i plan on is a comp cams full install kit with match parts and a head porting.

The heads are 416s and i've already began to grind at them a little. As for cam selection i'm thinking either the comp cams xe262 or xe256 leaning towards the 262.

I'm probably going to leave stock valves in the head and just have a 3 angle valve job done (1.84/1.5s).

I'd like to run headman elite longtube headers( 1 5/8 primarys and 3 in outlets) on it and a weiand stealth dual plane intake underneath the tb (not sure if i'm going to have hood clearance issues so any insight to that is appreciated). I'll have a 454 tb on top of the intake with adjustable fpr and a 255 walbro pump in the tank.

My biggest concern right now is to get the compression up a little, this block already uses the stock thin steel shim gasket so a thinner gasket won't help much, so i'm looking more along the lines of decking the heads (don't want to buy pistons no matter what). What i want to know is the max safe ammount i can shave off these heads?

How high can i safely rev this stock 2 bolt 305 with screw in studs in the head? I'm hoping for 5,500.

I'd also like to know if the comp cams xe262 or xe256 would be fine running a low 9 to 1 compression ratio. or high 8 to 1 compressions (8.8 8.9 or so).

Basically i'd just like to know if this is a good matching setup for a mild build.

Any insight on a better cam selection, intake manifold,hood clearance, cheap ways to gain an ideal compression for this setup are greatly appreciated.


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