Accel says their runners are 1.65" port diameter, while the thirdgen tech articles say 1.615". Which is it?

The tech articles also say that the TPIS runners are 1.66" and the base entry is 1.75". Is this right? Nothing like blowing past a big step to kill flow.

 

Someone has told me that their Accel base measured 1.625" round, whereas the tech articles say 1.75" round.

 

Finally got through to Edelbrock. They claim their runners are 1.7" wide by 6.5" long.

 

Anybody want to reply besides me?

 

Aaron, there is a tech article here at thirdgen that had this info. How true it is I don't know but I guess you could go by this.
I hope it helps you or I hope someone else can give you input.

Good Luck!

Runner Type Length (in.) Port (in.)
Stock TPI 7.250 1.470 round
Lingenfelter/Accel 6.625 1.615 round
SLP cast runners 6.625 1.600 round
TPIS large tube 7.625 1.660 round
TPIS siamese large tube 7.625 1.660 round
Lingenfelter/Accel Super Ram* 4.125 1.870x1.970 "D" shape
TPIS Mini Ram 3.500 2.600x1.350 entry
1.960x1.200 exit
Stock TPI Manifold base 6.375 1.470 round entry
1.960x1.200 exit
TPIS Big Mouth base 6.125 1.750 round entry
2.090x1.280 exit
Lingenfelter/Accel 6.125 1.750 round entry
Super Ram base 2.090x1.280 exit
* Runners only

 

OOOOPPs!
Sorry did read the part that you said you read the tech articles.

Sorry.

 

My new RamJet intake's runner length is just 4.125 inches!
SC