LS1TECH - Camaro and Firebird Forum Discussion

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-   -   What's my rwhp? (https://ls1tech.com/forums/dyno-guesses-bench-racing-forum/1886102-whats-my-rwhp.html)

td1168 11-25-2017 08:25 AM

What's my rwhp?
 
Getting ready to build my stock bottom end WS6 with an A4 and 3.73's. Here's a list of mods:
TEA Stage 2 243 heads
BTR Stage 4
102mm vengeance ported fast intake
NW 102 tb
42 lb. injectors

What will it put down on the rollers?

HCI2000SS 11-25-2017 08:29 AM

It's just gonna depend on the dyno. With that said I'd say maybe maybe 440-450. What size stall?

98CayenneT/A 11-25-2017 08:32 AM

What converter ?

Tough to guess through stalled autos.

400 - 450 rwhp

td1168 11-25-2017 08:35 AM

Yank 3600. I know numbers vary but I'm hoping for something between 425-450.

qweedqwag 11-25-2017 08:35 AM

410. if your lucky

HCI2000SS 11-25-2017 08:40 AM

Based on personal experience I will tell you this....don't worry about the dyno number if the car performs like it should. If this setup traps around 120 mph in a full weight setup then it's running good for what it is. Like mentioned above it could be anywhere from 400-450, but it really doesn't matter if it's setup and running right

td1168 11-25-2017 08:47 AM

I'd be very happy if this set-up trapped 120mph!

98CayenneT/A 11-25-2017 08:54 AM

I trapped 121 - 122 mph hitting the limiter on the 1-2 and 2-3 shift.
I put down 396 whp on a random hub loaded dyno through my loose, unlocked converter with setup in my sig. Made 2 pulls for fun.

HCI2000SS 11-25-2017 09:02 AM


Originally Posted by 98CayenneT/A (Post 19777960)
I trapped 121 - 122 mph hitting the limiter on the 1-2 and 2-3 shift.
I put down 396 whp on a random hub loaded dyno through my loose, unlocked converter with setup in my sig. Made 2 pulls for fun.

Prime example. 396 rwhp and tapping the limiter but with a 122 trap. Take another HCI LS1 with a similar build that's makes say 450 rwhp, but traps say 118...ive seen it go that way as well lol

td1168 11-25-2017 09:15 AM


Originally Posted by 98CayenneT/A (Post 19777960)
I trapped 121 - 122 mph hitting the limiter on the 1-2 and 2-3 shift.
I put down 396 whp on a random hub loaded dyno through my loose, unlocked converter with setup in my sig. Made 2 pulls for fun.

What was your et?

98CayenneT/A 11-25-2017 09:25 AM


Originally Posted by td1168 (Post 19777967)
what was your et?

11.26

60' 1.57

td1168 11-25-2017 09:29 AM

I'd be very happy if this set-up trapped 120mph!

HCI2000SS 11-25-2017 09:41 AM


Originally Posted by td1168 (Post 19777975)
I'd be very happy if this set-up trapped 120mph!

What tire and wheel setup are you running?

98CayenneT/A 11-25-2017 01:26 PM

You may also need a little more converter if you're trying to get everything out of it.

td1168 11-25-2017 02:20 PM


Originally Posted by HCI2000SS (Post 19777981)
What tire and wheel setup are you running?

Haven't figured that out yet. I ran 17" MT Drag Radials on my 01 camaro in my sig. That car was an M6 with 3.90's. I put down 440 rwhp but never ran any better than 11.90's and usually trapped 118-119mph. I sucked at shifting and that's why I bought an auto! Lol

HCI2000SS 11-25-2017 02:26 PM


Originally Posted by td1168 (Post 19778105)
Haven't figured that out yet. I ran 17" MT Drag Radials on my 01 camaro in my sig. That car was an M6 with 3.90's. I put down 440 rwhp but never ran any better than 11.90's and usually trapped 118-119mph. I sucked at shifting and that's why I bought an auto! Lol

I hear ya man. If you have a good tune with this setup, along with no issues, good track conditions, etc...im willing to bet you'll be very close to 120 mph

kingtal0n 11-25-2017 03:34 PM

CIDxrpm/3456 = CFM @ 100% VE * .069 (rough temp conversion) = lb/min @ 100% VE

Tell me what you get, then subtract 10-15% for drivetrain losses and thats what you have.

Example:
355cid X 6000 / 3456 = 616CFM * .069 = 42.5lb/min = 425BHP

Thats a turbo-conversion (for temperature) so power should be slightly over that. Also keep in mind its only 6k, if you goto 6500 or 7000 it will be massively different.
So give it 20horsepower for non-turbo air, 445BHP, then subtract 12% for manual trans = 391RWHP @ 6000rpm

Its just a rough estimate
all dyno read different (dynojet I prefer because the roller never changes 'weight')

td1168 02-11-2018 07:49 AM


Originally Posted by td1168 (Post 19777942)
Getting ready to build my stock bottom end WS6 with an A4 and 3.73's. Here's a list of mods:
TEA Stage 2 243 heads
BTR Stage 4
102mm vengeance ported fast intake
NW 102 tb
42 lb. injectors

What will it put down on the rollers?

Well some plans changed. I picked up a set of tfs215’s and I’ve decided not to run the BTR Stage 4 cam. I almost set on going with the vengeance racing VRX5 cam but I’m not sure of what lsa and advance to run. Vengeance said to stay with the 113+2 but I thought the 111 would build better mid range torque. Any help from you guys would be appreciated!!

td1168 02-11-2018 07:52 AM


Originally Posted by td1168 (Post 19831312)

Well some plans changed. I picked up a set of tfs215’s and I’ve decided not to run the BTR Stage 4 cam. I almost set on going with the vengeance racing VRX5 cam but I’m not sure of what lsa and advance to run. Vengeance said to stay with the 113+2 but I thought the 111 would build better mid range torque. Any help from you guys would be appreciated!!

Also I’m going with the 92mm intake and tb instead of the 102 setup.

HCI2000SS 02-11-2018 08:26 AM

What's your question exactly? Just about the cam?


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