Post by eatchevyshtf@#d on Mar 23, 2007 17:14:49 GMT -5
i have a 305 now but i have already replaced the tranny, now i want to move into the gears and finish up the drivetrain.........so guy's what do you recommend......i am lolking to sill cruise on the hwy, but also want the performance of coming out the hole..............give me a ratio and why do you think that's the best way to go
83 Silverado, 305v8 rebuilt 700r, A?C still blowin cold
Post by Pontiac1976 on Mar 23, 2007 17:33:23 GMT -5
Well I would use a 3.42 or 3.73 then it depens on what motor going to be like later. .The 700R4 will help with both for gas mileage. But out of the hole 3.73 still rev a little high if your doing a lot of high way driveing . If your not towing anything with it the 3.42 will still fell good out of the hole.First find out what you got in it. Are you still going to use the same size tire. look like 205 or 215. How big cam are you going with the motor ,stock\mild\ hot rod.
77 1/2 ton Heavy Half chev 454,350TH,3.07rear driven 6 YR now changed back to 85 monte carlo SS 305 Motor as of 2004, june,30 inter changed to 84 GMC style, flatbed with a 98 van bumper.
Pontiac1976 has a good point, gears in the rear all go in hand with cam, tire size, and usage of the truck. I had 3.73 gears inn mine with a 700r4, and a stock 350 basically. But my tires are 28.5 inch diameter. At 70 I was turnning about 2700 rpm which isnt too bad for highway crusing (kept me from speeding alot too lol). I drove my truck from Louisiana back to North Carolina when I moved home. After moving here I aquired another vehicle to drive daily and swapped out the 3.73 10 bolt rear axle for a 12 bolt 4.11 with a posi unit that I picked up for 500 bucks from a good friend. Now I am kinda stuck since I have wrecked the daily drive and recieved a DUI in the process I am stuck driving the old truck daily now. Anyways back to the point. Will 4.11 gears and 28..5 inch tall tires I am pushing 3 grand at 70 now. Highway cruising is not completely out of the option I just make sure I don't have to be in a hurry. If you have a big cam it will like the steeper gears, along with a good stall. Mild cams don't need as much gear, you can run a 3.42 gear with a mild cam and it will still feel good off the line. Thats the advantage of the 700r4, really low first gear. So when deciding on what gear to go with you nneed to think about how big is your cam? Do you need a stall for this cam? How big are your tires? And also how will I be driving this truck?
[glow=blue,1,300][shadow=green,left,150] 86 1/2 ton 2wd Parts house replacement 350 Several performance parts added Performance built 700r4 4.11 gears with a true locker[/shadow][/glow]