Just wondered how much of a difference in flow there is between SS runners and the large tubes. I've got an Accel base coming and I just put in a convertor. I will be running stock heads and cam for a while too.
Which runners would you recommend for me.
Thanks

Bob

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350 TPI, 700R4(rebuilt), K&N's, MSD 6AL, Headers, Flowmaster, 160* stat, airfoil, MAF screens cut out. 13.88 @ 101.18 mph

 

Get the SS ones. At least that what the most of the people recommend. Check out https://www.thirdgen.org/messgboard/...ML/000267.html



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GTA -89:Free flow muffler,dual 3" HF cats, Edelbrock headers, Vette heads, 1.52 RR 7/16, ZZ-9 cam, Big Mouth, AS&M LTR, !plenum, 52 TB, MSD 6AL, TPIS level V prom, Superior shift-kit and all the minor mods, a AFR 195 headed 383 in the works!! ready May 2001...
http://www.itv.se/tacs/members_cars/m279/m279.html (Swedish Trans Am Club)

 

If your going to be running stock heads and cam, I'm going to have to go with the LTR's.

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Looking For:

87 IROC-Z28 350 TPI: The car I want.

84 TRANS AM 305 H.O.: Another car that would be OK to own while I look for the IROC-Z!!

 

Will the SS runners move the power further up (less low end--more top end) more than the regular LT's?
If so how much more?

Bob

 

Yes, they most likely will. I can't tell u how much though, it depends on the engine and how its modded.

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Looking For:

87 IROC-Z28 350 TPI: The car I want.

84 TRANS AM 305 H.O.: Another car that would be OK to own while I look for the IROC-Z!!

 

Our illustrious vendor for the GP verified that the Accel runners will make power to 5500 if the rest of the motor can support that and is well-matched. I think you can get decent performance from the SLP's if you're willing to do some porting, but they are probably not the best choice. AS&M or Accel would be better, but they do cost more.

I have some pic's of the siamese porting I did on my SLP's and plenum - send me an e-mail if interested and I'll send them to you.

 

Does the plenum need to be opened up to look exactly like the entrance of the SS runners?
In other words instead of having 4 larger holes, make them into 2 "B" shapes just like the runners.

Bob

 

Yes, the plenum does need to be opened up to match the runner ports of SS runners