|
Post by widefrickenopen on Dec 4, 2011 12:31:25 GMT -5
4.88 or 5.10 is what I would recommend for gears
|
|
Vito324
Feature Winner
For badass roof signs, Check out BlackFlag Designs on Facebook!
Posts: 2,189
|
Post by Vito324 on Dec 4, 2011 12:49:52 GMT -5
I use 4:10's with my 3.8, My tracks are pretty small as well.
|
|
|
Post by cheater22x on Dec 4, 2011 15:04:57 GMT -5
here are a few tips i have found for this motor that will swap over from a 350. cam bearings, main bearings,pistons, valvetrain parts, timing cover, oil pump, and front dress. im grabbing one to power my car hoping i wont have traction issues with my 7.5 stock rear gears welded solid with tractor lugs.
|
|
LT1
Heat Winner
Posts: 393
|
Post by LT1 on Dec 18, 2011 23:19:08 GMT -5
To the guy who asked about gear ratios. I would say go with 4.56s.If u run small tracks it will work perfect. It would be low enough to pick up speed quick but not low enough to rap your mtr out when your going for a full track shot.
|
|
|
Post by krazy-k on Dec 24, 2011 23:03:26 GMT -5
what about 3..73 gears with a chain saw 3-speed???
|
|
|
Post by widefrickenopen on Dec 24, 2011 23:10:17 GMT -5
you no what ratio you 3speed is i think it would depend on if the tranny was a 0 grove or on up to a 3 or 4 grove i believe, never ran a 3speed but always wanted to but i would base your rear gears off of how you first gear is in your car, lol prolly dont help much
|
|
|
Post by krazy-k on Dec 25, 2011 15:06:24 GMT -5
ill get 2 test it when i can get the broken bolt out of the egr setup and get it blocked off
|
|
|
Post by derbydriver666 on Jan 2, 2012 0:54:34 GMT -5
couple questions........just got a 4.3 , someone stuck it in a 80s blazer that originally had a 2.8 so not sure what it originally came out of.....................has black plastic center bolt valve covers stamped vortec, block #s are 4.3 LG from left to right backside of block behind dist...........2sg.........d297.......10066011
intake casting # is 14094011
have been trying to to decode it with little success.......from what ive read it says its a non vortec 87-94 tbi engine with no balance shaft , but does not really give any more info than that ...........and I guess the plastic centerbolt valve covers are throwing me off...............any ideas guys
|
|
Vito324
Feature Winner
For badass roof signs, Check out BlackFlag Designs on Facebook!
Posts: 2,189
|
Post by Vito324 on Jan 2, 2012 18:40:27 GMT -5
|
|
|
Post by junker00 on Jan 15, 2012 21:15:25 GMT -5
Hey guys I read through all the building a 4.3 section, and i have a few more questions hopefully i didnt just miss the questions. So a regular v8 disributor will go right in a VORTEC 4.3 also? I know they will work in the tbi engines. Just not sure about the vortecs. Also, I can get a carb 4.3 MARINE vortec intake and carb. Any downside/upside to a marine carb? Thanks
|
|
|
Post by smashbob12 on Jan 17, 2012 9:53:18 GMT -5
Hey guys I read through all the building a 4.3 section, and i have a few more questions hopefully i didnt just miss the questions. So a regular v8 disributor will go right in a VORTEC 4.3 also? I know they will work in the tbi engines. Just not sure about the vortecs. Also, I can get a carb 4.3 MARINE vortec intake and carb. Any downside/upside to a marine carb? Thanks should be no prob's on the marine carb .but you can run anadapter to run a holley, or any other carb really.
|
|
|
Post by junker00 on Jan 18, 2012 21:11:18 GMT -5
also i have a non vortec 4.3.....would a 350 cfm be big enough? it is a stock engine. Or should I go with a 500 cfm? Thanks
|
|
-75x-
Heat Winner
Keepin' Em Strait... Since 08'
Posts: 863
|
Post by -75x- on Apr 4, 2012 12:18:55 GMT -5
the factory Q-jet puts out between 650 and 750cfm
|
|
|
Post by dchase10-4 on Apr 19, 2012 10:41:36 GMT -5
Does anyone know the size of a header bolt for these motors?
|
|
|
Post by runinoutofgas on Apr 19, 2012 11:37:22 GMT -5
10 mm
|
|