Two SC 61's = trouble
Join Date: Jul 2001
Trickflows require guide plates and roller rockers and hardn'd pushrods.Like any mod in the valve gear they ALL have to be set up correctly.Though the set up on the Trickfows [track heat] are more complicated they are also more higher spec or severe duty compared to pedestal mount esp.The AFR's are more expensive due to cnc porting std. A ported [cnc] T/W will flow similar or better resalts.Nothing wrong with both heads.There is no real direct comparo.Hell with 230 duration 550 lift cam 11:1 compression Victor or T/W inlet they made 400+ H.P in MM & FF...
If it was my motor I'd put Crane 2021 or B303[ fairly wild ] with 1.7 roller rockers which it already has.. Remember the cam on a Sprint has less duration on exhaust than a std 5 Ltr, made up with the 1.7 rockers..Port the GT40 heads with good springs.As EDXR8 said port the bottom inlet and you have 220+ easy. More with a 76mm maf and bigger 70mm throttle body..You have most the GOOD stuff allready on you'r car!!! Just enhance it more... Open to debate ??
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..