You're right Overkill, I can't even figure out now why I opened my mouth.....he must be running Chrome Molly and lied about having 4000 miles on it, I'm sure now with that knowledge that his compression will come up quite significantly soon.........Now I can hope my cars will all increase in compression and just get fast as my rings start seating as they all have less than 5k miles on them.......YEA Me!!!
Engine was built over there, paperwork I got states Sealed Power forged pistons +.030", and doesn't state the ring type. I'll wait till Terry does the dissy and tune and leave the comp test to him I think. I'm confident he will get the engine to optimum tune with what I got and that when I ditch the ballast and with some start-line technique, that I'll shave off some tenths. Never had much experience racing a slushbox, more of a stickshift man, so practicing loading up the converter to just on its stall speed for launch will make a difference I'm sure. wtf would I lie about the engines mileage? Im deducting the mileage on the import papers from whats on it now. engine was rebuilt before the car was shipped, got a big stack of papers and 3 photo albums of build pix with the car, havent fully perused it all in fine detail yet, theres a lot of stuff right from day one, titles, first ten years of regos, lots and lots of stuff. Had a body off to bare frame build some 18 yrs ago with lotsa supporting pictorial evidence . Really straight in Regal Black too, bodywork is my thing and this thing is super-straight! (body and paint on the orange, white, and bronze cars in pix are all my work)
Thinking back on his post with the miles on his engine with my CRS memory I was thinking 400. Good luck with your engine after 5k.
ok, going out there for another crack tomorrow night. more relaxed 26psi in ET Streets coolant overflow repaired dissy still on 9 initial 35 total no passengers on board and no wheels or jack in the trunk, still need to check throttle is fully opening. That's about it till this time tomorrow, and hopefully Ill have some quicker times/faster speeds to report!
yes @hugger I bought a digital dialback timing light. Its a Stage 1 dissy part no 1112016 fitted with Pertronix at the recomended factory 10 deg initial it ran out to 37 deg total... So I brought it back to 9 deg initial, which spun to 35 total up around 4-4500rpm Till Terry can regraph my dissy for more initial and bring the total in earlier I just gotta run what I got.,.unfortunately. That should change by next time out. With the stock convertor Ill try holding her on 1500rpm for launch. Interesting in Motor Trends dragstrip runs both Auto and Manuals had the lower diff ratio, and the Auto posted a quicker ET The auto was shifting at 6000 rpm, Im sure mine shifts into second earlier than that, Ill try leaving her in Drive first up, then shifting manually and see what nets a better time. Its hard to hear my engine if Im alongside an 11 second animal though and I dont wanna over rev on the L-2 change, so I may adjust my startline strategy to suit. @rkammer I'll keep that rear psi in mind if I have any traction issues I'll drop to 20-22 Nights are cold here still, the car will like the cold air but I suspect a cold track would be less grippy that a hot one?
1112016 is the Stage 1 distributor. It has 20-24* of mechanical advance. 10* initial, 34* total is possible. Of course it's possible that the particular distributor he is using has more mechanical advance. Manufacturing tolerances were not what they are today. Some of the late 60's Buick distributors had 30-34* mechanical advance.
If its gonna fail it will on the strip. Runs fine on the street. Checked throttle at shed this arvo and it was only half opening the secomdaries! Bent the pedal for full throttle. In staging lanes now. There was hour holdup some dude hit the wall up the top end. Things moving now Shes dying momentarily as she hits second .mates got vid of it. Thinking maybe wasnt wheelspin last time... Mystery... Looking at vid theres a good puff of smoke when she gets going again as well as gojng into 3rd ...could be dumping too much fuel in when secondaries open.... Dunno. Ill have anothet crack and try manually shifting the auto this time. Frustrating Thought with full throttle Id be in the 13s for sure
Bring the RPM up when you're staging as high as you can with tire pressure lowered to about 20 psi. If you can get the 60 ft. time down to 1.8 you should turn a high 13 1/4 mile.
Better this time, thought it was the last run for me for the night as staging lanes closed at 930pm. I held around 1500rpm at the startline and gave it my all, spun it to around 5000 in Low shifted into Second on the column shift and held it to 5500 then into Drive foot through the floor to get a 14.109@97.64 a personal best ET on 4 wheels. Rushed to get back around before the staging lanes closed, just scraping in! Intent on getting my high 13 I ran a 14.891@94.94mph Anyway for now Im happy with the 14.1 and I know my 60 foot will come down with launch practice. And once Terry works his magic on the tune Ill definitly be knocking on the door to high 13s Carby needs some work to help with the transition from primaries to secondaries as well as the dissy regraphing. Had fun and now Im tired... Ill just check to see if the track photographers pix are up yet.
If your running a Petronix III you have a built in rev-limiter and factory setting is 5500, might check and see. Also with driving skills alone and a quicker reaction time your 14.10 was actually a 13.9 run already with no mods yet.........BBB!
Reaction time has no bearing on your E.T.....You could sit at the light for a minute and it'd still be a 14.10.
Yes, thats right, it comes down to 60 foot time to achieve that 'what if?' Earlier run when the car didnt transition into to secondaries properly I scored a 1.9 time for 60 foot, now with the magic power of the words 'what if' Id married that 60 foot to my Personal Best E.T. Then Id run a high 13 Like magic! Once the carbs set up right to transtition onto the secondaries without flooding the engine and momentarily putting out the fire, As well as optimising the advance curve then I think the engine will perform at its best for what it is. Now a Question. Were the 71 heads (TS) more of an open chamber than the 1970 items?
My recollection of '71 Stage 1 heads vs '70 heads is that they were almost the same. They were both closed chamber heads. The 70 heads had about 2 cc less volume than the 71 heads. (69cc vs 71cc) but, the lower compression for 1971 was mostly achieved with a deeper dish in the piston.
You many find it difficult to get your short times much lower because you are unable to raise RPM up at the starting line because of that stock (presumably) converter. It happened to me a few years ago with one of my Turbo Regals. It would go over 100 MPH in the 1/4 but, I couldn't get the short times below 2.0. Installed a very mild 2500 converter and went from the mid 13s to the high 12s with just that change. It may be time to read Jim Weise's post #29 and bite the bullet for a decent converter. With one of his, you won't even notice any change in street driving and cruising. Dropping the tranny isn't really that bad if you have a good relationship with a garage or a good friend willing to help.
Heres a pic from the 1970 Motor Trend article showing the difference in the combustion chamber area between Stage 1 and stock 455 heads. Im fairly confident I can get under 14 with a stock converter. Im happy to equal the performance of a factory Stage 1 in its day. The nature of drag racing being what it is and with my addictive personality I know for certain that with a converter change I run solid 13s, then Id be chasing 12s, buying alloy heads, intake manifolds, maybe bigger carb or dual quads, chasing 11s, 10s even. Running lower gears and ultimately trailering the car to the strip. Its never ending. I went down that route with my last car and was content to slightly better its 1971 performance figures. My bike runs 2 seconds quicker than stock, with overbore, cams, intake, exhaust, and a Power Commander and dyno tune. Where does it end?...when the money runs out. I cut a sub 2.0 sixty foot last night, so Im confident I can repeat it. I know how addictive chasing tenths of seconds becomes. I spent the last 7 years doing just that with a 351C 4V 4-speed GT Falcon. And the last 4 years with my Victory. Its fun, thats why I do it. You guys know how to get the best out of what youve got, thats all I desire.
Easy to go down that rabbit hole, aye. Roll cages and trailers. Been there done that. Now I just prefer to cruise to the beach
