318 to 390 stroker

Wyrmrider said
rumble
we don't know if the builder picked the old h or the newer hl
that h predates UDHarold
but customer ended up with the hl
IMHO cranes were smoother good for U
not a magnum I take it
The hr regrinds seem to work well

You don’t know what cam the op got?
No worries, read below! No “HL” after the XE274.

dieselman966 said
We got the rotating assembly back finally. Ended up right at 10:1 compression. DCR calculates out to 7.9:1 with the comp xe274 cam that the builder recommended. Should be quite the runner all said and done. We have a tc coming from ultimate converter with a stall in the 2800 to 3200 range. Do any of you have experience running a holley avenger carb? Thinking well slap on a 670 avenger.