What kind of gas is available where you are located? What kind/brand of forced induction? Assuming US-grade 93 pump gas, and no meth, I would suspect no more than 4-6 lbs, you can run more with meth injection. I know Richie was running about 14 lbs on a HO motor but he was running meth.
Cams also play a role in this as well. Overlap is your friend in a case like this.
With 10.5 CR, he has aftermarket pistons, and some sort of rods other than non-HOs Searching through the OP's posts confirm this. So, not an issue here it seems. Avoiding detonation will be due to the high compression and IAT issues if he runs too small a F/I unit like the infamous KB kit.
You'll want a real intercooler unless you want to go through massive amounts of methanol. That's really pushing the limit with compression that high on boost too especially on pump gas. I assume you have had some engine work done and hopefully have forged internals.
Yes I had forged internals, water/meth, 12psi, running on c16 racing gas. Few weeks I ago I decided to push my 4.7 to its limit and added a 75 shot NOS. As a result piston/rod #1 flew through the oil pan and the engine block cracked in 4 different places. My engine was built back in 06 N/A and on boost for the last 6 months of its life.
My new engine block should be ready in about 3 weeks.
New 4.7 bottom end Mods
Manley forged pistons 8:1 CR bore at 3.70(+.040)
Custom Carrillo Billet rods
Total Seal rings
Clevite rod and main bearings
ARP Bolts
Forged crank (HO)
Yes I had forged internals, water/meth, 12psi, running on c16 racing gas. Few weeks I ago I decided to push my 4.7 to its limit and added a 75 shot NOS. As a result piston/rod #1 flew through the oil pan and the engine block cracked in 4 different places. My engine was built back in 06 N/A and on boost for the last 6 months of its life.
My new engine block should be ready in about 3 weeks.
New 4.7 bottom end Mods
Manley forged pistons 8:1 CR bore at 3.70(+.040)
Custom Carrillo Billet rods
Total Seal rings
Clevite rod and main bearings
ARP Bolts
Forged crank (HO)
Sorry to bring back a dead thread but can anyone confirm if using a high output crank in a standard 4.7 is possible. Or if there are any companies that offer a forged crank for the standard NON high output 4.7.
It is possible. If it has the same tone ring as what you already have it's a bearing swap drop in deal. Of course always check your clearances. Most HO Cranks 1st GEN are 16 tooth JTEC tone rings.
Sorry to bring back a dead tread…
I haven’t post anything in here in a while, about four years
My Custom forged engine still running strong but I did removed the Paxton Supercharger because I felt like it was limiting my engine and I decided it was time for a Turbo Upgrade. Unfortunately, the project was put aside for personal matters. Now, with my WJ Turbo project resurrected I will redo the suspension, tranny and reinforce everything that may break.
Currently doing my transmission-
NEW- 3400 billet stall, alto red clutches, deep oil pan, modified housing for extra clutches, seals, bearing, pump and all other internal parts. I’m only keeping my modified valve boy from my old transmission.
Let me know if I should update post as my project advances
Heck yeah post up your progress. I still have mine and drive it occasionally. This is the first time I have been on in awhile too. I kinda fell off the map for a while. Life does that too ya sometimes.