5.3L to 408?
Sep 5, 2011 | 02:52 PM
#21
Joined: Jan 2006
Posts: 16,282
Likes: 438
From: Huntsville, AL
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
If you want a big engine, I would contact a shop like HKE, LME, ASP, TSP, TR, etc. and see what they say...dont even try a 5.3 to that many cubes.
You could always just boost the 5.3 and give it hell...mitch made close to 800hp and 1000rwtq with twins on his 5.3
Sep 5, 2011 | 03:58 PM
#23
If I was in your situation, and could do it over myself, if u want to be around the 500hp mark I would just do heads, cam, and boost it...these stock lower ends can take a beating, and drivability and gas milage won't go totally to ****.
Sep 6, 2011 | 07:28 PM
#25
Thread Starter
On The Tree
Joined: May 2009
Posts: 128
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From: macomb, mi
Yea, and it was great. 408, 11:1 cr, stockish 317 heads, 218/230 cam, and a tvs1900 with a 2.8 pulley made 600hp and torque out the *** instantly. I wouldnt try that high of a compression ratio with more than the ~8lbs I was running though.
If you want a big engine, I would contact a shop like HKE, LME, ASP, TSP, TR, etc. and see what they say...dont even try a 5.3 to that many cubes.
You could always just boost the 5.3 and give it hell...mitch made close to 800hp and 1000rwtq with twins on his 5.3
If you want a big engine, I would contact a shop like HKE, LME, ASP, TSP, TR, etc. and see what they say...dont even try a 5.3 to that many cubes.
You could always just boost the 5.3 and give it hell...mitch made close to 800hp and 1000rwtq with twins on his 5.3
Where you making 600 to the wheels?? I wounder how much i will be making to the wheels in my full size SUV... Also if im at 10psi now with a bigger crank pulley how much boost will i drop with the 408/tvs1900 setup?
Sep 6, 2011 | 10:56 PM
#27
Thread Starter
On The Tree
Joined: May 2009
Posts: 128
Likes: 0
From: macomb, mi
Sep 7, 2011 | 12:25 AM
#30
