5.3L to 408?
09-04-2011, 05:43 PM
#11
TECH Fanatic
just get a 6.0...all your stuff will bolt right up....i wouldnt stroke a 5.3 to 408 your lookin for trouble..you can go to tsp and get a short block 408 for 3500
09-04-2011, 08:10 PM
#12
On The Tree
Thread Starter
Join Date: May 2009
Location: macomb, mi
Posts: 128
Likes: 0
Received 0 Likes
on
0 Posts
09-05-2011, 12:02 AM
#14
On The Tree
Thread Starter
Join Date: May 2009
Location: macomb, mi
Posts: 128
Likes: 0
Received 0 Likes
on
0 Posts
Thats great, my s/c replaced my intake so that should still work.. also will my oil pan bolt up to it? and i wont have any problems will i? its just a straight swap right? Only reason im asking is i dont wanna get it and then be stuck ya know
09-05-2011, 08:06 AM
#16
If you're keeping the 1900, just bore your 5.3 to 347ci (3.905 bore) use your stock crank, forged pistons/rods and put all that leftover money toward some good heads. I wouldn't go any bigger than the 383 build already mentioned with that head unit unless you only want 3-4lbs boost. You'll need to go with the bigger 2300 to feed a 400+ci stroker. Keep it small, throw all the boost you can and you'll be happier and keep some cash in your pocket in the long run IMO...
09-05-2011, 08:43 AM
#17
Also something to think about is your heads..I assume your using stock 5.3 heads..They will work on a 408 but combined with low boost im willing to bet it wont be much faster than what it is now..
You would at the bare minimum need a stock set of 317 heads..
Go look at TIM Z's setup..stock headed 6.0 with 12psi from a 1900 and runs almost a full second faster than you..I would also do a different cam
You would at the bare minimum need a stock set of 317 heads..
Go look at TIM Z's setup..stock headed 6.0 with 12psi from a 1900 and runs almost a full second faster than you..I would also do a different cam
09-05-2011, 08:51 AM
#18
Didn't Atomic do a 408/TVS1900 combo? High CR if I remember, like 11:1. He made 6-7psi.
I agree a 2300 would be optimal for a 408 (I bought a 2300 for my 408)
If you want to stay on the cheaper side a 383/1900 would be a fun ride. Better on gas too.
If you want to stay super cheap, swap in a LQ4 and throw 10psi at it with your 1900. Big TQ increase from a 5.3 to 6.0. (add small cam while it's on the stand) That's a cammed, boosted, tuned, 6.0 for less than the price of the 408 short block
I agree a 2300 would be optimal for a 408 (I bought a 2300 for my 408)
If you want to stay on the cheaper side a 383/1900 would be a fun ride. Better on gas too.
If you want to stay super cheap, swap in a LQ4 and throw 10psi at it with your 1900. Big TQ increase from a 5.3 to 6.0. (add small cam while it's on the stand) That's a cammed, boosted, tuned, 6.0 for less than the price of the 408 short block
