Correct Jason, but [O]Liv[ia and Danny are completely incorrect, wrong with not cleaning all of the carbon deposits off the pistons, inside the heads, valves as they did within the cylinders The carbon deposits result in detonation which results in harm. All of that effort to open the engine, disassemble, examine everything, also remove every piston, change the bearings, hone the cylinders and not clean, wife, remove the carbon deposits from the pistons, heads, valves is obvious, clear, silly, foolish nonsense !! Everyone that does a refresh as this certainly cleans and removes all carbon deposits ! They clearly need to modify the fuel mixture and perhaps the fuel. But why are obviously very ignorant and refuse to accept the proper, correct, valid knowledge which is known for over 5 to 6 decades to over 120 years. Ethanol and methanol are far better hydrocarbon fuels with hydrogen is the best. @GNARLY SPEED SHOP ​ @GnarlySpeedShop The inline fuel filter is certainly an improvement, but a 10 num replacement filter is far better for the fuel injection system. Adding, Switching to having "Flex-Fuel" for variable and high ethanol content is far better too. However, Ignorant Fools will remain to be foolish accepting the false incorrect ideas, claims, information from those with improper, incorrect, invalid information lacking proper knowledge known form over 140 years. Blogs, certainly 'comments' along with many involved in building, racing are certainly among those with incorrect, invalid, improper, false base, basis. The actual professionals have connection with the proper knowledge. Among the best available on-line are David Vizard, Lake Speed, Jr.. much from Steve Morris, , add especially EFI University, R.E. D which are actual engineers as Lake Speed, Jr. Certainly add experts as PME, Dennis and similar professional engineering, competent, engine builders as Ed Pink. Among the most common is ignorance with, about fuels, lubrication and proper operating temperature. All The Best and Much Success in Your Quest(s), Health, Happiness and Well Being 😊, Sincerely ☺ P.S. If You will check the CA Law, ask any PD officer, Sheriff, it is required to have the CA license plates-tags with the appropriate valid sticker on the front and rear of the vehicle along with the required registration and insurance information. Danny should already know this, since he has been loving in CA all these years, as i did when living there too [1982-1993]. Personally appreciate the older blue metal painted license tags, plates. They look especially very good with this 1967 GTO too! have been thinking often, many times about the specific 417 NPR and the meaning for this vehicle. Have You figured out a meaning yet ?

I reused all my lq4 positions. Just put new rings on them and clean them up. been running my lq4 for year's now still to very day since 2017 and not one problem

@@robertyoung. Yes, Robert Young, ... so what is/are You actual point(s) ??!!

​@@newtonfirefly3584 That minimal piston carbon buildup will not be an issue at the lower compression ratio they are running with.

@@optimisticpessimist484 Do You have any actual chemistry, physics, engineering, engine mechanics to substantiate Your claims with accuracy ??!! NO -> Your attempted falsehood instruction failed => Good Luck, Bye Bye

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Wish I could send you pics of my cars…my brother & both had 67 Pontiacs I had a Tempest and he had a Lemans convertible

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Yes! Will be working on cosmetics next

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