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v869tr6 · 04-01-2017, 07:56 PM

This thread is about the Crow, the Crow is a TURBO car that runs 40+ psi of boost, some turbo cars are starting to run 80 psi, so no real port work needed. Good valves and springs, top hat washers and tubes in E heads to keep the studs tight and a good size cam. That and a bottom end that stays together will tear up most cars, LOL

Tom Vaught · 04-01-2017, 08:42 PM

Quote:

Originally Posted by v869tr6

This thread is about the Crow, the Crow is a TURBO car that runs 40+ psi of boost, some turbo cars are starting to run 80 psi, so no real port work needed. Good valves and springs, top hat washers and tubes in E heads to keep the studs tight and a good size cam. That and a bottom end that stays together will tear up most cars, LOL

X2. Say you have the typical 330-340 cfm E- head out there available from a lot of people.

13.5 psi of boost will make 850 hp on a very basic 455 type engine. Luhn Performance proved that deal.

Many Years ago there was a guy named Doug Hess who ran 8.40s with his heavy Camero with a 350 cid engine. Article by Woody Hatten in Super Stock magazine.
So Doug put a single dominator on a new car (Monza body - same engine) and TURNED UP THE BOOST and ran well into the high 7s. HE WAS RUNNING TWIN TURBOS SO THAT WAS EASY TO DO. many years later, as you said v869tr6, that still is the way to make big hp, and not so much on the cid and head flow side of the deal. Only reason why you need the head flow is if the class restricts boost and engine displacement.

Tom V.

GTOGEORGE · 12:37 AM

Quote:

Originally Posted by Tom Vaught

X2. Say you have the typical 330-340 cfm E- head out there available from a lot of people.

13.5 psi of boost will make 850 hp on a very basic 455 type engine. Luhn Performance proved that deal.

Tom V.

I (KRE) made almost 800 hp with a 455 and a 250 B & M street charger roots blower and ONLY 8 lbs of boost with 320 e heads! Big Deal!

GTO George