dynobobstieg
New Member
There has been a lot of discussion lately about throttle body's and plenum's for the SVT Cobra and I thought I would share the data we have accumulated though many hours of experimentation and testing. These numbers are for Stiegemeier Porting ported TB's and PL's and represent what is available from us.
Stock Plenum 70 969 CFM
Ported Only Plenum 77 1066 CFM
Welded and Ported Plenum 81.5 1128 CFM
Stock Plenum and Stock TB 66.4 919 CFM
Ported Plenum and Series 1 TB 72 996 CFM
Ported Plenum and Series 2 TB 77.5 1073 CFM
Welded and Ported Plenum and Stock TB 73.5 1017 CFM
Welded and Ported Plenum and Series 1 TB 75.5 1045 CFM
Welded and Ported Plenum and Series 2 TB 81 1121 CFM
Stock Accufab Plenum and TB 80 1107 CFM
Stock Dragon Plenum and TB 83 1149 CFM
Ported Dragon Plenum and TB 83.5 1156 CFM
Welded and Ported Dragon PL and TB 94.5 1308 CFM
All research, development and testing done in house. All TB and PL cfm numbers derived from Superflow 600 Flow Bench corrected to 28" by % flow scale x valve x 3.05 at 3". All tests performed with a clay radius entry. The picture below is of the GT500 Testing we performed, it is merely to demontstrate our testing procedures. Thank you and for any other information on these or any of our other products feel free to give us a call or check out our website.
"]
[
Stock Plenum 70 969 CFM
Ported Only Plenum 77 1066 CFM
Welded and Ported Plenum 81.5 1128 CFM
Stock Plenum and Stock TB 66.4 919 CFM
Ported Plenum and Series 1 TB 72 996 CFM
Ported Plenum and Series 2 TB 77.5 1073 CFM
Welded and Ported Plenum and Stock TB 73.5 1017 CFM
Welded and Ported Plenum and Series 1 TB 75.5 1045 CFM
Welded and Ported Plenum and Series 2 TB 81 1121 CFM
Stock Accufab Plenum and TB 80 1107 CFM
Stock Dragon Plenum and TB 83 1149 CFM
Ported Dragon Plenum and TB 83.5 1156 CFM
Welded and Ported Dragon PL and TB 94.5 1308 CFM
All research, development and testing done in house. All TB and PL cfm numbers derived from Superflow 600 Flow Bench corrected to 28" by % flow scale x valve x 3.05 at 3". All tests performed with a clay radius entry. The picture below is of the GT500 Testing we performed, it is merely to demontstrate our testing procedures. Thank you and for any other information on these or any of our other products feel free to give us a call or check out our website.
