XE266 with AFR190's. Is anyone on here running this cam and head setup? I'm hoping for over 400hp n/a to the wheels. By desktop dyno this setup seems to match up pretty nicely but I have heard of many people running the XE274 cam with the same heads. But that cam looked to peak to high for a stock bottom end to effectively use.

I'm also going to be running Hooker LT's 1-3/4" and probably a HSR on this combo.

Opinions please.

 

What's the XE266? I'm running the hydraulic, flat tappet XE268 on a slightly wider 114* LSA, 1.6 rockers. AFR 190 heads on a 383 short block.

390HP to the rear wheels through an old 3 speed automatic.

HOWEVER, that's with a Weiand 142 roots blower shoving 5 PSI into the engine. And I'm still not at 400 RWHP. Just factoring in the usual 20% loss through the drivetrain that puts me at about 480HP at the crank.

Just no way you're getting a REAL 400 to the rear wheels with that combo unless you put a plate system on it. 400 actual at the rear wheels is about 475-500HP at the crank, depending on the type of tranny you're using. That's a lot of HP for a bolt-together small block to make N/A.

That combo on a 383 with decent compression, carb and exhaust and a rather large XE 282 solid lifter cam MIGHT stand a shot at getting you to that HP level. Or maybe a roller cam of similar specs would get it done. The little flat tappet 268 just ain't gonna get it done.

 

In the real world through the mufflers and with all the accesories I doubt you would see 400hp at the crank with those mods if this is a 350.