What's a "Economical" way to increase our Displacement????

[alnukem]

Right now I think i'm in the upper 300's RWHP in my car, I don't have the dyno sheet handy. I am happy now. I just like to know what to do if I had a failure. I have a C5 with a 427 in it....the extra torque is really sweet!

[A1990]

If you are going into the bottom, big bore (4.125) and offset ground crank is best bang for the buck to increase cubes. Still a lot of $$$ though.

[Blue Flame Restorations]

More never seems to be enough. If you have 300+ to the rear wheels now, just wait until you drive a cammed, ported car. You'll be hooked!

[alnukem]

Originally Posted by Blue Flame Restorations

More never seems to be enough. If yo have 300+ to the rear wheels now, just wait until you drive a cammed, ported car. You'll be hooked!

I know, I know.........Story of my life!!!!!!

[alnukem]

Originally Posted by A1990

If you are going into the bottom, big bore (4.125) and offset ground crank is best bang for the buck to increase cubes. Still a lot of $$$ though.

That does sound like the right way. I am sure that the bigger bore would increase head flow "a lot". How much does the small journal/offset grinding gain you cube wise?

[Jagdpanzer]

When hooked on the quest for more power at some point to much is still not enough.

[WARP TEN]

Originally Posted by Jagdpanzer

When hooked on the quest for more power at some point to much is still not enough.

I think it was the late great Mickey Thompson who said "Too much horsepower is almost enough" --Bob

[WARP TEN]

Originally Posted by Paul Workman

Welcome to the "500" club!

Lots to be said for this level. 500+ is nothing to sneeze at

-you keep the "Nikasil" (factory) bore lining (good stuff!)
-stock cam = stock idle (read: sleeper!)
-best bang for the dollar
-mileage remains nearly the same

My mileage is not exactly the same as I installed 4.10s and it dropped a bit. But grin time went up.

One thing to consider is a set of re-grind intake cams to Pete's specs. If I had/have it to do over again, cams will be in the mix. Pete's cams have shown they reliably could bump rwhp by perhaps 20 hp +. With Marc's porting, you'd be in the "hood" of 530+ ish chp (something like 440-450 at the tires...Just a thought.)

Defintely was in my mind but then my mind noticed my empty wallet. And I have limited my HP a bit because I have decided to include cats (they soften the exahust note somewhat and keep the world just a little cleaner) and keep the dual mass flywheel, as I always pop the trans into neutral when I come to a stop or am in heavy traffic. Even with the thicker lube I fear the gear rattle would be too annoying. I can always change my mind at a later date on either of these things without huge financial consequence. And while it doesn't show up in the dyno numbers, the 4.10s help the engine to rev a bit quicker like the Fidanza does.

Wecome to the FBI madness!!!
P.

Thanks. Looking forward to it. --Bob

[Blue Flame Restorations]

Originally Posted by WARP TEN

My mileage is not exactly the same as I installed 4.10s and it dropped a bit. But grin time went up.



Defintely was in my mind but then my mind noticed my empty wallet. And I have limited my HP a bit because I have decided to include cats (they soften the exahust note somewhat and keep the world just a little cleaner) and keep the dual mass flywheel, as I always pop the trans into neutral when I come to a stop or am in heavy traffic. Even with the thicker lube I fear the gear rattle would be too annoying. I can always change my mind at a later date on either of these things without huge financial consequence. And while it doesn't show up in the dyno numbers, the 4.10s help the engine to rev a bit quicker like the Fidanza does.



Thanks. Looking forward to it. --Bob

I have the single mass flywheel. I had the idle set at 850rpm and the chatter is almost gone. I do have 3" Tri-Flo B&B though. Can't really hear much of anything. hahahahahahahaha Only the roar when I drop the clutch!

[Pete]

Originally Posted by alnukem

That does sound like the right way. I am sure that the bigger bore would increase head flow "a lot". How much does the small journal/offset grinding gain you cube wise?

Yes, very true bigger bore way better flow.
4.125" bore X 3.75" stroke = 401 ci

Pete