Hello All, Perhaps this is a newbie question but I can’t find the answer on a internet search so I need to ask. I have an LS1 with a build up bottom end. I am wishing to put some aftermarket heads on it (probably AFR). My question is the bolt pattern the same as the factory heads for the...

Maybe someone, with a similar combination, would be willing to make a spark plug recommendation... 69 Camaro - Manual Transmission - 3.73 Rear Gear Gen VI Big Block - Iron Block .030 over - 489CID AFR 290cc Oval Port Heads Eagle 4.25" Forged Rotating Assembly 10.70:1 Compression Edelbrock RPM...

OK, So I have a 327, double hump heads, unknown cam, HEI, dual plane Edelbrock, 350TH, Holley Street Avenger 570. I have been working with an Innovate LM2, and tuning on this carb for some time: I have swapped out the primary metering block for a Proform with adjustable IFR & PVCR I have...

out of nowhere my solid roller cam, AFR-alum head 406 started making a loud noise and I shut her down. it was a loud banging/ clanking noise over the pass side head. drained the oil, removed filter, checked plugs, removed valve covers, checked fuel pump. nothing looked abnormal so I ran her for...