what gear ratio to go with?

[jshouse]

i have found out, due to a bad weld, that i need a new set of gears. the truck has 3.73's in it now, but i was thinking about going to 4.10's. what do you guys think?

it is my daily driver, or i hope for it to be one day, but my daily driving consists of a 7 mile round trip to work and back, and just basic driving around town. not much if any highway driving.

and, i live about 15 mins. from redline, where i hope to be able to take the truck pretty frequently once most of the bugs have been figured out.

its a rcsb 79, ls1 with a 224 551 crane cam and lt's.

th350 tranny.

thanks

jack

[zeake]

4.10

[COWL327]

4.30s, love mine,but i have overdrive

[1slo4.8]

there ain't a big difference from 4.10 to 4.30 is there?

[GMCwantsLS1]

You are going to hate 4.10s without overdrive!

[1slo4.8]

i think he is lol but hey you got over drive too!

[RedHeartbeat]

Yeah, depending upon tire size your engine is going to be screaming at 70 mph. With 4.10s, OD and 27" tires mine was running high RPMs at highway speeds.

[1slo4.8]

dales says he runs 2600 at 70mph

[COWL327]

I do I do and get 18.5 to 19.2 mpg on the hiway

[1slo4.8]

i don't even get that and i'm runnin 2000 at 80mph. LOL