Texas Speed 427 low NA power - Page 3 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

ss camaro-monte · 04-26-2024, 04:53 PM

Numbers do seem low but if motor doesn't have any mechanical problems that intake I am sure is not optimal at all for 427 cubes. Even a ported intake would be worth Probably 15rwhp. Most guys running those big cubes need an aftermarket intake.
My buddy had a mild 408 ls2 and even with a ported ls3 it wasn't enough. He went with one of those high ram types... can't remember which one it was years ago in a 2000s goat and he jumped like 25rwhp.

ruby2010 · 04-28-2024, 11:47 AM

Remember end of the day the dyne is a tool, go to the track and get some numbers, your mph will tell you how much power you are making.

Pkeen · 04-28-2024, 05:47 PM

When I had my Dyno tune done ,they did the same thing handed me the sheet and just had the rwhp and no tq. I had him go back and in and print out with both.
I really don't get it ,tq is just as important or more than hp!

When I'm paying for a Dyno tune I want both . I know of several well known professional racers that will tell you ,never trade peak tq for peak hp. At least for na anyway .So why would they give half a tune sheet is beyond me!

kennyry83 · 04-29-2024, 03:18 PM

Ya honestly I'm not worried about the HP or torque. I'm worried about power drop off at 5900rpm which is the main issue, should be producing power to around 6500rpm. Spoke with TSP already, salesman is talking to some people and getting back to me.

Pkeen · 04-29-2024, 08:54 PM

Was this dyno run in 3rd gear or 4th ?

Ashen L99 · 06-05-2024, 11:48 PM

I’m with WHAMMO, it seems to be pretty choked, with all of the factory top end stuff and even with an F1A94, you could open it up and make it more efficient.

Im not going to bash Abel, but I have nothing nice to say.

*SSE 4 2SS* · Yesterday, 12:22 AM

Quote:

Originally Posted by Pkeen

Was this dyno run in 3rd gear or 4th ?

If the mph on the graph is accurate, and the motor is falling over at 5800, that’s a 4th gear pull… Stock gears and motor at 6500 rpm or thereabouts is about 110 mph in 3rd… if memory serves…

We did my dyno pulls in third due to 3.07 gears out back, and 1/2 inch taller tires made for some very high mph pulls… especially with 9000 rpm pulls…

04-28-2024, 05:47 PM	#31
Pkeen Drives: 2010 Camaro 2ss/rs, 2008 Avalanche Join Date: Jan 2019 Location: Lake Pannasoffkee,Florida Posts: 252	When I had my Dyno tune done ,they did the same thing handed me the sheet and just had the rwhp and no tq. I had him go back and in and print out with both. I really don't get it ,tq is just as important or more than hp! When I'm paying for a Dyno tune I want both . I know of several well known professional racers that will tell you ,never trade peak tq for peak hp. At least for na anyway .So why would they give half a tune sheet is beyond me! __________________ 2010 Rally Yellow 2ss/rs , M6 ,416ci , K1 rods & crank,weisco -3.0cc dome pistons,.040 head gasket, 11.5 compression,1 3/4" LT ,3" pipes w/x-pipe no cats, Cam Motion cam 239/247 113+3 .621"/604" lift , BTR .660 Platinum dual springs w/Titanium retainers, CAI . Stock ls3 heads,intake,injectors & TB. 515rwhp/500rwtq.

04-29-2024, 08:54 PM	#33
Pkeen Drives: 2010 Camaro 2ss/rs, 2008 Avalanche Join Date: Jan 2019 Location: Lake Pannasoffkee,Florida Posts: 252	Was this dyno run in 3rd gear or 4th ? __________________ 2010 Rally Yellow 2ss/rs , M6 ,416ci , K1 rods & crank,weisco -3.0cc dome pistons,.040 head gasket, 11.5 compression,1 3/4" LT ,3" pipes w/x-pipe no cats, Cam Motion cam 239/247 113+3 .621"/604" lift , BTR .660 Platinum dual springs w/Titanium retainers, CAI . Stock ls3 heads,intake,injectors & TB. 515rwhp/500rwtq.

06-05-2024, 11:48 PM	#34
Ashen L99 Drives: Ashen grey, 1SS, L99 Join Date: Aug 2016 Location: Oklahoma Posts: 530	I’m with WHAMMO, it seems to be pretty choked, with all of the factory top end stuff and even with an F1A94, you could open it up and make it more efficient. Im not going to bash Abel, but I have nothing nice to say. __________________ Roto-fab big gulp, Nick Williams 102mm TB, Kong X-port LSA, Ported LS3 heads, BTR stage 4 V2 pd cam, 416 CI bottom end, original block. TSP 2” long tubes, Corsa ZL-1 catback. Nitrous Outlet 102mm plate kit/100 shot JUST IN CASE. NGK BR7EF plugs with Taylor plug wires. DSX flex fuel kit, 1 Walbro 450lph, 2 525lph return style fuel system, deatchwork 1000cc injectors. B&M deep trans pan, stock 6L90 converter, ZL1 diff 3.23 ratio. GM ground effects, T-Rex upper grill, Z/28 Spoiler, Lolly pop Lime brake calipers, Forgestar F14s, 12” subwoofer, and custom paint matched interior.

04-26-2024, 04:53 PM	#29
ss camaro-monte Drives: 2015 camaro 2ss, 87 monte ss Join Date: Jun 2016 Location: Houston Posts: 242	Numbers do seem low but if motor doesn't have any mechanical problems that intake I am sure is not optimal at all for 427 cubes. Even a ported intake would be worth Probably 15rwhp. Most guys running those big cubes need an aftermarket intake. My buddy had a mild 408 ls2 and even with a ported ls3 it wasn't enough. He went with one of those high ram types... can't remember which one it was years ago in a 2000s goat and he jumped like 25rwhp.

04-28-2024, 11:47 AM	#30
ruby2010 Drives: 2010ss Join Date: Oct 2018 Location: USA Posts: 67	Remember end of the day the dyne is a tool, go to the track and get some numbers, your mph will tell you how much power you are making.

04-29-2024, 03:18 PM	#32
kennyry83 Drives: 2011 Camaro SS Join Date: Aug 2023 Location: Oklahoma Posts: 21	Ya honestly I'm not worried about the HP or torque. I'm worried about power drop off at 5900rpm which is the main issue, should be producing power to around 6500rpm. Spoke with TSP already, salesman is talking to some people and getting back to me.