what gear should i run

[daves 72 dart]

what gear should i run in my dart? Work done: O-ringed, tubed for roller cam, oil gallies enlarged, bored to 4.07
(.030 over) and honed with deck plates by Herb McCandless.

340 steel crank
Prepared by Lunati, stroked .110 to 3.42 stroke and balanced to 8000 rpm's.im planning on shifting at 7200.

340 steel rods
Prepped by Lunati. Hand picked set. All are within .001 of each other in length. Bronze bushed, balanced and lightened.

Heads
340 X heads with 2.08 intake valves and 1.60 exhausts. Double springs for
.700 lift cam, Maximum porting on intake and exhaust ports.Ports are 63cc combustion chambers. heads flow a little over 260 cfm.

Pistons
Venolia lightweight forged pistons. Uses dykes top ring, 1/16 2nd ring and standard tension oil rings. Weight is 510 grams.the Compression is 11.3

Intake
Holley Strip Dominator ported to match heads.950 carb

Camshaft
Cam Motion roller 269 275 @ .050 and .631 lift with 1.5 rocker Valves set on .024 .028
RPM range 4500-7500. Cam is degreed in at 104 deg centerline.

Other Parts
High volume Melling oil pump, Comp Cams roller lifters, Crane 1.5 roller rockers(gold), Fluid Balancer, windage tray, Cloyes double roller timing set. SCE copper head gaskets(.060). Tall valve covers for use with roller rockers. Moroso 8 qt deep sump oil pan. Bronze cam gear for use with roller cams
my dart has a 727 with 4500 stall and 4.88 gears i will be running 275/60/15 tires.i have had people tell me i will run out of revs and others said the 4.88 is what i need.is there a formula to find out what gear to run. thanks

 

[skybolt]

http://www.wallaceracing.com/Calculators.htm

This should help. Sounds like a wild little motor!

 

[bOb shingler]

keep the 4.88's

 

[1wild&crazyguy]

4.57-4.88 gear should be good.

 

[rumblefish360]

I was thinking 4.88's even before I got half way through the post. The tire should be tall though as to reduce rev's as a regular like 28 inch tire would dish out.

Big ol'Mickey's or the like. 33 X 15's or the like.

 

[daves 72 dart]

rumblefish i dont think 33s will fit.i dont wont to run out of revs before i cross the line in a 1/4 mile.i plan on running 275/60/15.im going to be getting some mono leafs and i dont have a clue if i should get stock hight or 1" over. so if anyone of you guys have a idea what hight leafs i should get that would be great thanks