Two SC 61's = trouble
Join Date: Jul 2001
Re: What works best on a XR8 motor
The whole induction system is restrictive though on that model the inlet and heads are not too bad so long as he has GT40 p's.[Utes where behind sedans in the past??] I suggest a good set of extractors and quality exhaust / mufflers...As the exhaust is still restrictive with these heads etc.. Yes the std exh is crap!!!
I see he has a good exh so just port and extractors, not too big or you'll loose low end power.....A set of 1.72 roller rockers will help also..As the std ones are 1.6 ratio..Ohh good double valve springs... hth...
Don't be afraid to try something new. Remember, amateurs built the Ark...Professionals built the Titanic!
Tuned & maintained by "Peppertree Perfmormance". Dart block, Scat 4340 steel crank, Custom C.P pistons.Oliver rods.. Mal Wood twin plate clutch.. Twin SC61/2's,482 rwkw/ 645 rwhp..
Passengers, myocardial infarction material..
Last edited by ebxr8240; 11-04-03 at 02:59 AM.