bjankuski

I have a 1986 vette with various modifications (listed in my sig) and I decided to change from the large tube TPIS runners to the Superram intake manifold. Nothing else on the car was changed other then the large tube runners to the superram. I did a before and after dyno comparison to see what the real differences were. With the large tube runners the car had 272 RWHP at 5000 RPM and 355 RWTQ at 3400 RPM. After the change the car had 311 RWHP at 4700 RPM and 376 RWTQ at 3700 RPM.

I was very happy with the 38 RWHP gain that the superram gave me and even more impressed with the torque gain that was acheived over the Large tube runners. When you compare the two runs to each other the Superram beats the large tube runner setup across the entire testing range of 2800 RPM to 5700 RPM. One other thing that I found interesting was the HP peak of both systems, the large tube runners actually peaked at 5000 RPM while the Superram peaked at 4700 RPM. I was expecting to see the Superram peak at higher RPM then the large tube runners. Both systems actually had very little drop off in power after their peaks to the test end of 5700 RPM, with a drop off of only 10 HP for both.

Overall I was very impressed with the gains of the superram over the large tubes, next I am going to change to the 219/219 superram cam and note the changes from the ZZ-9.

Caboboy

Very interesting info. Thanks for taking the time to isolate the mods and do the dyno!!! :cheers:

BTW, is that a bolt on SR, or has it had any porting done? Thanks again!

scorp508

Nice comparison good job. :thumbs: I think you'll see the HP curve move higher with a cam matched for the superram. Here is a comparison chart of my car stock and modified (so far) with a superram setup, 219cam, 1 3/4" headers and out of tune. There is lots of tuning left to do as it is majorly rich below 4200 and killing lots of power.

Stock: 211rwhp & 315 ft/lb
Modified: 322rwhp & 369 ft/lb



Nasty A/F ratio curve

FoolCrzy

Awesome Numbers!!!

:cheers:

bjankuski

I cleaned up the Superram and matched the plenium to the runners before I bolted it on. The stock Superram casting was very rough with poor matching of the plenium to the runners.

TA

Thanks for the great info :cheers:

Rob90

:cheers:

LD85

Nice job, very telling information!

This post should help a lot of the curious people out with some hard core facts!

I agree with Scorp, the new 219 cam will surely move your RPM band up.

Corvette0096

Very good break down.. :cheers:

Ramanstud

I guess I better screw all this porting crap and get a second job so I can afford that superram....


:thumbs:

J Z06

:cheers:

Thanks! Nice write-up.

Hole-Shot

Is your TPIS intake manifold ported?

Chance

THe Superram sure seems to be the way to go. :yesnod: I can't wait to get mine to a dyno. :cheers:


[Modified by X-FireChance, 10:33 PM 3/22/2003]

bill mcdonald

:party:

I cant wait!