Venomantidote95

Ok 347 10.5:1 cr and 10lbs boost, tuning moates qrtr horse. Max timing 23* head studs 1011-2 gaskets. Blew the f<Ľk out of number 1&2 cylinders.

Should we reduce the timing a few more deg or move from 93 oct to 100?
Any help appriciated!

5.0kid

run a cometic mls gasket that will help, i had a 9:5 to 1 motor with 16 psi and never had one issue with oem head gaskets in my crate motor and that was wit 35* of timing

Venomantidote95

Well it isnt mine, ots a friends he bought the same gaskets again if u ran that setup with that timing what fuel did u run 118?

mjr46

maybe try reducing the boost for 10.5 to 1 or add a water/meth kit

5.0kid

ran it on 93 and then 100

Venomantidote95

It isnt intercooled, and i see alot of other vehicles with 10.0:1 cr with 15+ lbs of boost!
Soon maybe an intercooler and or the meth he has been talking about doing that!

uedlose

it is not all about compression and boost. What head ? what is the grind on the camshaft? he could and should IMO pull a bit more timing out of it at higher RPMs when it is make its most boost and roll it to it down low. Did he drop heat ranges on the plugs? How much injector is he running?

uedlose

Also like said I would look into a MLS gasket of some kind they work great.

uedlose

Does he have a wide band? if he dont it would be money well spent also.

Venomantidote95

Yes just bought a wide band, heads are tfs twisted wedge, running 42s with 3923s.

So drop down to about 20 wot?