Cam only. Why is my torque number so low
06-19-2018, 07:19 PM
#21
TECH Junkie
you also need to find out where you are shifting at. You should be shifting around 6700 rpms. If you are shifting at around 6200 that means your shift extensions are around 5000 rpms. Look at your graph and you will see at 5000 rpms you are not making much power after your shifts. Now if you spin it to 67-6800 rpms you may see shift extensions around 5900 rpms so look at your graph and you will see you would be making a lot more power after your shifts.
06-20-2018, 08:36 AM
#22
Moderator
iTrader: (4)
Join Date: Jul 2014
Location: My own internal universe
Posts: 10,446
Received 1,836 Likes
on
1,145 Posts
I think your primary issue is a late IVC as indicated by your cam specs with a low compression ration - assuming stock since its cam only. I think you either need compression or less cam.
06-20-2018, 09:46 AM
#23
TECH Senior Member
Good call! I don't think many guys realize how much dynamic compression is lost with a donkey dick cam.
06-20-2018, 01:33 PM
#24
Teching In
Join Date: Mar 2007
Posts: 47
Likes: 0
Received 0 Likes
on
0 Posts
what cam? Auto or 6 speed? Reason I'm asking is I have same setup except LS1 intake, swapping to LS6 this weekend, with 230 234 600 602 111 lsa cam and only made 365 365 and I think it's low.
06-20-2018, 01:51 PM
#25
TECH Senior Member
The LS1 intake held it back a bunch. Putting the LS6 intake on will do you a big favor!
06-20-2018, 02:42 PM
#26
Here's why... Your heads don't flow the airflow that cam needs and the intake is overkill for 853 heads + 3.23 gears suck for drag racing situations. Invest is some heads that flow good in the .200 - .500 range and I would get some gear 3.73 to 4.11.... Your problem lies in your cylinder heads, you can have the best intake,cam, and tbody but if the heads dont flow to the required specs it is all a waste.
06-20-2018, 03:26 PM
#28
Staging Lane
Thread Starter
Here's why... Your heads don't flow the airflow that cam needs and the intake is overkill for 853 heads + 3.23 gears suck for drag racing situations. Invest is some heads that flow good in the .200 - .500 range and I would get some gear 3.73 to 4.11.... Your problem lies in your cylinder heads, you can have the best intake,cam, and tbody but if the heads dont flow to the required specs it is all a waste.
06-20-2018, 06:09 PM
#31
CALL THESE GUYS, ASK ABOUT PORTING THE HEADS YOU HAVE, 1/2 THE PRICE OF BUYING NEW.
https://frankensteined.net/#services
OR
http://www.headgamesmotorworks.com/
OR BUY SOME FROM THEM ALREADY DONE -- https://frankensteined.net/shop/gm-ls1-fed/
DONT WORRY ABOUT MAX FLOW AT .600 --- LOOK AT THE .200 - .500 RANGE, BETTER FLOW THERE = BETTER DESIGNED HEAD
Last edited by SRT8.Acelleration; 06-20-2018 at 06:18 PM.
06-21-2018, 03:12 PM
#32
TECH Junkie
Here's why... Your heads don't flow the airflow that cam needs and the intake is overkill for 853 heads + 3.23 gears suck for drag racing situations. Invest is some heads that flow good in the .200 - .500 range and I would get some gear 3.73 to 4.11.... Your problem lies in your cylinder heads, you can have the best intake,cam, and tbody but if the heads dont flow to the required specs it is all a waste.