Have a stock L98 w/ a ported plenun & base w/ SLP runners.
SLP air foil. Original throttle body (planning on changing soon).

I have a set of 90 vette heads lying around.. Was thinkin of rebuilding / porting.. Just not sure if it would be beneficial to do so..

Also, what specs should I follow.. (if worth it of course)

 

if those heads are good enough for john lingenfelters projects they're good enough yours id personally use them. not sure on specs though keep looking around for that

 

Thx.. will do

 

They are very capable heads if ported right. Can get good performance out of them. As said, lingenfelter had or still has a CNC profile for them that puts them on par with AFR/Dart/Brodix 180cc heads and the like. Not quite as good as most decent aftermarket 195 cc heads as the lingenfelters come out around 185 I think, but they are supposively good heads from what the vette guys are saying. I personally havent used them nor know anyone close that is but I dont doubt their capability.

Plan on a camshaft swap while your down there, that will really make it worth your effort.

 

pair ur ported 113 heads with a lingenfelter 211 cam if ur keeping ur factory style intake manifold

 

Vette alum heads have no exh riser to match up to the F-Body intake ( if EGR required for inspection )

 

So they should mount right up.. other than egr.. i plan on canceling out the egr

 

Nope the heads use the old style blot pattern so u have to elongate the 2 center holes not a lot of work, but u said u have a aft mrk base so they might did it already u will need a egr block off plate too

 

or just drill into #8 cylinder header primary or #6 and run the tube to the intake like the vettes do it

scoggin dickey used to sell a kit for that mod