i am thinking of buying the L31s for my fiance's 91 RS. the motor will be about 9.5 to 1 with an XE 274 cam. Pace parts has them for 484 fully assembled. that is about what i would have into the stock heads that i have if i fixed them. the pace parts ones are drilled for 86 and prior intakes.

any comments will be appreciated.

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88 S10
Dropped 3/4
18" Boyd Coddington Timeless 5s
Dart equipped 406
12.20 @ 115.25 mph

 

theyre sweet heads but you need to watch out for the locks hitting the valve guides with high lift cams. If you have the ones set up for .500 lift then you should be ready to go. By the way, you need headers as the stock manifolds wont bolt up.

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91 RS W/carbed 350, Vortec heads, performer rpm, Comp cams Xtreme energy 224/230 duration and .477/.480 lift. BFG Drag radials. 3.42 posi,Corvette servoed 700r4, 3000 stallconverter. Edelbrock TES, 3inch cat, flowmaster with single 2.5 inch exit.
Best time yet to come
12's?? :crossthumbs:

This is a Pic of my car in race trim www.tbns.net/billyjay/camero.jpg

Yes I know how to spell camaro- so dont ask. I didnt make the link