427 build-up
Race Director
Joined: Jan 2000
Posts: 13,018
Likes: 2,262
From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
GKull---Yeah I know...that 'ole '27 was a heck of a heavy way to have fun! But that sucker ran like crazy and forever no matter what abuse I heaped on it. I'm talking serious abuse!!
Stroker stuff is getting awful cheap these days...hard to pass up the cubes. If you select the rest of the combo right, you'll be amazed at how quick a BIG motor can rev!
There's just lots of fun when you never worry about putting down your Super Big Gulp to downshift!!
JIM
Stroker stuff is getting awful cheap these days...hard to pass up the cubes. If you select the rest of the combo right, you'll be amazed at how quick a BIG motor can rev!
There's just lots of fun when you never worry about putting down your Super Big Gulp to downshift!!
JIM
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
I was just kidding. We were small block injected 8.90 class dragster racers. Always fixing blown stuff with a 9000 rpm injected motor. It ran 8.30's and you would slow it down to make the 8.90 s/c index Once we went to the injected 510 BBC we had to slow down for the 7.90 class and were always in the quick 16 bracket racing. Never had to work on it. It just ran fine and lasted a long time.
Go to a 7.90 or 8.90 national event and they are all 468 to 715 ci motor withs electronic T stops. Blowers that leave the line off idle and at the 330 foot mark come on and go through the lights at just under 200 mph
Go to a 7.90 or 8.90 national event and they are all 468 to 715 ci motor withs electronic T stops. Blowers that leave the line off idle and at the 330 foot mark come on and go through the lights at just under 200 mph
Race Director
Joined: Jan 2000
Posts: 13,018
Likes: 2,262
From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
Yeah I know you were kidding George....
But I never got the whole throttle stop or "slow down" type racing. The only thing that ever gets me excited is heads up run what ya brung stuff.
I just can't se building a 7.50 car and then slowing it down to a 7.90. It would kill me!
JIM
But I never got the whole throttle stop or "slow down" type racing. The only thing that ever gets me excited is heads up run what ya brung stuff.
I just can't se building a 7.50 car and then slowing it down to a 7.90. It would kill me!
JIM
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
.026 is lots of lash. Is it a new style cam? If your running a cam that requires a 20 minute break in period it's smart to only use one spring if it's a dual spring. I've always gone with the recommended lash settings from the first fire up till I retire the motor.
I have changed lash to as much as .006 tighter when I was running 225# closed springs just to keep from beating the needle bearing out of the rockers
I have changed lash to as much as .006 tighter when I was running 225# closed springs just to keep from beating the needle bearing out of the rockers
Thread Starter
Pro
Joined: Jan 2002
Posts: 695
Likes: 0
From: Ashley Michigan
I didn't think .026 was alot, I was looking at the chilton's manual for late 60's and early 70's, and it was anywhere from .024 to .030. I was just wondering if I should set it right at .026 for the break-in or if I should set a bigger or smaller gap. I do have a set of harland sharp roller rockers, and would like to keep from beating them up.
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Verdad Gallardo
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
That's why i ask if it was an old style cam. Modern cams are made for less lash and have much steeper ramps. My new solid roller is .008 - .012 Most Crane cams that I have used are .018 - .022
What is your cam anyway?
What is your cam anyway?
