TSP 408 with TEA Heads
12-15-2005 | 12:58 PM
#21
Originally Posted by BLKWS6
make sure you take a clean pair of underwear with you on your first drive. cuz if you take it anywhere near WOT.....your gonna **** yourself....lol 
12-15-2005 | 02:49 PM
#22
Originally Posted by BADSS
Exhaust is QTP 1 3/4" long tubes with the high velocity merge collectors and Lane's 3" true duals with an X pipe and 18" Pro Flo Twister mufflers.
Anybody know how restrictive the Twisters are? I wonder if it would dyno higher with open headers.
Would I pick up any power going to a 1 7/8" primary header?
Anybody know how restrictive the Twisters are? I wonder if it would dyno higher with open headers.
Would I pick up any power going to a 1 7/8" primary header?
no, do not go to a 1 7/8. you willl lose a ton of TQ and gain almost nothing. my 408 set up for drag racing max effort only gained 5rwhp from 6500+ going to 1 7/8 with high velocity collectors and lost about 20lb/ft of tq.
from my experience twister style mufflers are fairly restrictive. I bet bullets would pick up 10rwhp and open headers will probably pick up 10-15rwhp over that.
12-15-2005 | 04:37 PM
#23
Originally Posted by 383ss
no, do not go to a 1 7/8. you willl lose a ton of TQ and gain almost nothing. my 408 set up for drag racing max effort only gained 5rwhp from 6500+ going to 1 7/8 with high velocity collectors and lost about 20lb/ft of tq.
from my experience twister style mufflers are fairly restrictive. I bet bullets would pick up 10rwhp and open headers will probably pick up 10-15rwhp over that.
from my experience twister style mufflers are fairly restrictive. I bet bullets would pick up 10rwhp and open headers will probably pick up 10-15rwhp over that.
Thanks for the info on the bigger headers- it goes against conventional wisdom for a big cube engine, though, doesn't it?
What about a stepped header? What kind of impact do they have on power output?
I suspected the Twisters might be a bit restrictive- is there a better flowing and quieter muffler that would work with true duals? My car is loud!
What about the Borla XR1's? I have heard they are quieter than bullets, and are a straight-through design muffler.
