Project "Payback"

[Vegas69]

No it wasn't. The new motor will have it plugged!

[HWY Nova]

Originally Posted by GregWeld

Somewhere my math SUCKS Phone water! I've checked this three times and it comes out 473 --- but the actual displacement would - as Todd states - be 508
so what am I missing??

Bore: 4.300 in.

Bore Area: Pi X 4.300 X 4.300 / 4 = 14.522 sq. in.

Displacement/cylinder: 4.375 X 14.522 = 63.534 cu. in.

Total Displacement: 8 X 63.534 = 508 cu. in.

[66LS7]

That is going to be a killer motor, should really help loosing the extra weight on the track.



Randy(D&Z Customs LLC.)
[email protected]
1-262-347-9741

[70rs]

Way to go Todd! I am looking forward to this chapter and can't wait to see a final parts list and then some numbers from the dyno!

[gmorris]

Originally Posted by Vegas69

No it wasn't. The new motor will have it plugged!

Then just make sure you run a racing filter with no internal bypass and a sturdy can. I use wix R series filters and they seem to be good quality.

[Vegas69]

Yep, I run a moroso racing filter anyway. You should be good to go. My filter caught a ton of it, unfortunately I didn't know I had a problem until it was to late anyway.

[GregWeld]

I have read that "normal" store bought filters can't deal with the pressures a good motor will make - say 70 lbs... and they can pop or blow... so running a "Race" style filter is smart insurance.

I run a cleanable stainless steel screen O'ringed type filter with magnets internally and remote mounted.... it filters 100% of the oil. However, all of that - won't save a motor that is determined to grind itself to death... But it sure SHOWS YOU that is happening!!! LOL

[Rybar]

Very cool motor Todd, really like the idea of shedding the BBC weight off the front with the alum block.

Have you thought about the spring rates having to be changed on the front end?

And have you thought about upgrading to EFI at some point?

[Vegas69]

Luckily Prodigy accidentally put small block/lsx springs in the front anyway. I was actually contemplating changing to big block springs before I pulled the motor. Although after my last autocross I was really happy with it as is. I'm sure my coil overs will need adjusted so I should be in good shape chassis wise.

As far as injection goes, I don't have any immediate or future plans. I'd need to start over from tank to engine on my fuel system. I feel the carb is easier to deal with in a racing enviroment. It's easier to keep two bowls full than 60psi behind every injector ALL the time. Plus, I just chapped my wallet anyway! Is there a group for this sickness?

[waynieZ]

This site is the group for that. We all share the same affliction! Thats going to be a sweet engine, plenty of power and a weight savings. This car just keeps getting better all the time !