69sunfireGTX
Well-Known Member
It only takes the u-bolts to be a bit loose for that to happen. Have you checked the torque on the suspension system bolts recently?
I talked with John Gay at Calvert this morning. He says they have seen this before, but it’s very rare. He felt the weight of my car coupled with the age of the springs (7 years) and the fact that they have seen a fair amount of street use could all be factors. But said it is still a very rare occurrence. He’s sending me out a pair of new locator studs. I’ll raplace them both; Should be good to go.
Hello lemonade. Just curious, have you ever been in the Renton area? Return to Renton car show? Reason im asking is there was a guy that cruised area in a car painted the same color years ago.
That’s racing....... On to the improvements!
It only takes the u-bolts to be a bit loose for that to happen. Have you checked the torque on the suspension system bolts recently?
Looking good . I would say a Victor 440 would be better if you have a RB , used both .
The PBR 29.5x10.5 are great i use them , if you can go a wider rim i would they are designed around a 10" rim . I started with PBR 28x10,5 on 8s then T thrustd 8 1/2 now 10s contact patch widened with each rim increase . Mini tub kind of makes it a no brainer . I moved the diff back 1/4" to fit the 29.5
Good luck
Tex
Oh ok. Maybe I'll see you next year at Pacific raceways.I’ve never cruised Renton in this car. I Did hit the Renton loop when I was a kid back in the late ‘80s in my 68 4-speed GTO, and a really nice 69 Buick GS400 I let get away. I am in Renton these days on a weekly basis, however. The car doesn’t see cruise duties too much anymore. I’ve been infected with a pretty deep case of “bracket racing”. If it went 500 miles this year, 496 of them were within the Pacific Raceways Property.
its funny talking about rev range . With my 440 i shifted@6000trapped about 64/6500 (28x10.5 PBR). With my first 505 shift@6000 trap 67/6900 (28x10.5PBR). Both ran the same Victor intake/carb/heads . When i fitted TF270 and Super Victor/dominator had to raise shift to 6300 as the vert flash moved from 5800 to 6000 (i also went 29.5x10.5PBR around this time)I went with the M1 because it will fit under my hood Tex, which a victor won’t do. Also, my engine operates in a lower RPM range than I think the Victor really fits. Good point .
—-its funny talking about rev range . With my 440 i shifted@6000trapped about 64/6500 (28x10.5 PBR). With my first 505 shift@6000 trap 67/6900 (28x10.5PBR). Both ran the same Victor intake/carb/heads . When i fitted TF270 and Super Victor/dominator had to raise shift to 6300 as the vert flash moved from 5800 to 6000 (i also went 29.5x10.5PBR around this time)
When i split the 505 i put the TF270 heads,Super Victor/1050 on the 440 and shifted @ 6000 trap about 65/6600 (29.5x10.5 PBR)
Now World 505 same top end shift@ 6500 trap 6750ish .
The extra 90lbs meant 2-300 more in the 2 step and 200 more on the shift . But its a lot safer block.
Tex
Malex , i am just conservative on the rpm . As a bracket racer i see little value in wringing the snot out of my motors . And as it is my daily i want some life as well . I had the 440 put together in late 2007 or very early 2008 , never touched the bottom end since , changed cam, intake and heads though . Probably 70000miles or so , sat for 15 months till split 505 then ran for about a year . I have plenty of fuel and limiter is set @ 7300 . Hopefully back on track on the 31st—-
Your trap RPM reminded me of my top end layover problem that I was experiencing for the last year plus. I did have a fuel system that was too small. Got that figured out but still had a top end lay over. I found it the last race day. Had a good run going and sure enough it started fluttering at 65- 66 range before the stripe again. Rev limiter was set at 6800. Turned it up to 7100, next pass out, no more layover and straight into the 9.90’s. I dialed 10.0, went 4 rounds. Yeah, something isn’t calibrated right, I’m sure looking forward to next year.
---Malex , i am just conservative on the rpm . As a bracket racer i see little value in wringing the snot out of my motors . And as it is my daily i want some life as well . I had the 440 put together in late 2007 or very early 2008 , never touched the bottom end since , changed cam, intake and heads though . Probably 70000miles or so , sat for 15 months till split 505 then ran for about a year . I have plenty of fuel and limiter is set @ 7300 . Hopefully back on track on the 31st
Tex
——Malex ,
No not me . I have been very happy with my Tflows
Tex
—-You would be amazed at how long the 1/2 shift takes to complete with a factory based valve body. The quicker the car the more rpm between the shift light an the actual shift. The shift takes the same amount of time for the band to grab the drum regardless of ET range. In my case it was close to 800 rpm. The 2/3 range is much closer, about 200 rpm. We even modified the T/A valve body by milling all the 2nd gear servo feed passages larger. It now takes about 500 rpm. Fortunately my shift light is adjustable for different rpm/shift. You guys may want to try 1/2 earlier.
Doug