[Jay S]

To me a 704 in a 4.25” combo’s have a decent lope to them, like Garry H mentioned. Not sure I can tell the idle apart between a 704 in a 455 or a 703 in a 400. But, you might miss the some bottom end on the 400, the bigger cubes should have that covered.


Bullet has almost the identical profiles, same intensities with different lifts. The 280,288 232,240 @.050versus 281,289 233,241 .050 on that Lunati. IRC I did a 283,291 235, 243 Bullet also, it is the next step up from the 280 profile. We have used some bigger ones to from that family also, great profiles IMO. Aggressive but not as extreme as a comp XE. Usually I widen the LSA out to 112 or 114 with Exh manifolds, 110 with headers. Smaller stroke I have done 110 with manifolds though. Lunati cost a little less to do the custom lsa, but with shipping it isn’t much different. So I have done more from Bullet than Lunati.

We have always done 4 to 6 on the advance like Harold suggests.

They seem to be very effective at filling cylinders, seems like they are forgiving with less compression than other grinds. The last 462 we was closer to 9.0 than 10 compression. It was on a 112 LSA and a 108 ICL and sounds just like your video link. It was a 232,240 Bullet with 1.65 rockers with .550 lift.

I went with the 4.25” stroker in my W72 4 speed 3.23 T/A.