on the site he said its a one off block.

the biggest donavon sbc block is 4.300.with a 400.raised cam and 9.8 something deck hieght.

for a 540 sbc it doesnt make much hp.only made 700hp,it said on the site.

we build 1000+ hp 468 sbc

ithink the donovan big block goes past that but they say this is small block they race a few hours from here im going for a squizz

us petrol heads lol
HWM hows the Best coming along? :hail:

horsepower means nothing, its the torque that you need!