[BruceWilkie]

Eight sensors arent going to tell BES anything that 8 spark plugs wont! AFR gauges or EGT gauges are good for reference AFTER spark plugs confirm your tune!

^^^ Truth learned the hard way!

[Tiger Paw]

Bruce, I agree completely! When you understand reading sparkplugs AFR and E-temps is just extra time and money spent. Be sure BES can read plugs and have have fuel and timing under control.

JC, Those headers should perform a bunch better. I notice the primaries are welded to the flange perpendicular. 99% of all fabricators will do that cause it's a bunch easier to fit and weld the joint. If however the exhaust port ROOF is at angle to the flange, that angle should be incorporated to extend into the tube. Less than 20 degrees misalignment? don't worry about. Anything more will cost upper power.

BTW, one of my old Roush buddies was working for Tony last I knew.

Good Luck!

[Gary H]

If reading the plugs is all that's needed, and I'm not saying it's not, why check anything at the collector like they're obviously going to do?

[Tiger Paw]

Gary, those collectors look like they may have been used previously? Or, they may haved checked A/F for baseline? Individual A/F sensors are more frequently used with EFI and Multiple carbs, as in 1 fueler per cyl. With a single carb adjusting cyl-cyl fuel requires manifold mods. Sometimes easy sometimes not and may impact the budget, for not much gain.

Baseline.... I had a set of Domos modified by a longtime big name carb company that were set up at 14.5 AFR. Ran the car once read the plugs it was obviously lean put them on our wet flow bench and found the problem.

[Pont428]

Originally Posted by Tiger Paw

Bruce, I agree completely! When you understand reading sparkplugs AFR and E-temps is just extra time and money spent. Be sure BES can read plugs and have have fuel and timing under control.

JC, Those headers should perform a bunch better. I notice the primaries are welded to the flange perpendicular. 99% of all fabricators will do that cause it's a bunch easier to fit and weld the joint. If however the exhaust port ROOF is at angle to the flange, that angle should be incorporated to extend into the tube. Less than 20 degrees misalignment? don't worry about. Anything more will cost upper power.

BTW, one of my old Roush buddies was working for Tony last I knew.

Good Luck!

Yeah John works there. ;-) Tony is one of the best tuners out there, I guarantee after doing these intakes hundreds of times, it is very optimized. Headers were built for these ports and lined up perfectly as well. They will be testing for reversion and exhaust efficiency on this next dyno. The cam guy thinks based on the results last time exhaust is limiting RPM and overtakes HP gain at 8100. He says 8500. That would be big.

[65nss4spdGTO]

TTT.

Any updates on this build?

Calvin Hill
Hill Performance
708-250-7420

[J.C.you]

car had to be rebuilt to 25.5 c...it is almost done. Should have some time slips this year.

[65nss4spdGTO]

Originally Posted by J.C.you

car had to be rebuilt to 25.5 c...it is almost done. Should have some time slips this year.

Thanks JC, can't wait till you get that thing out.

Best of luck and be safe.

Calvin Hill
Hill Performance
708-250-7420