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Advice needed
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oregonchevelle
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Joined: 19 Feb 2006
Posts: 64
Location: Oregon
2194.26 points



PostPosted: Mon Feb 20, 2006 3:38 pm    Post subject: Reply with quote

ok sounds great. how much cam do you think I would need or could go and still stay pretty streetable? Also, do you have an intake and carb suggestion? I have an Edelbrock Performer on it now, and a friend suggested a Holley Street Dominator 300-36. Others have suggested a Performer RPM or Weiand Stealth. As for carb the general consensus seems to be a Holley 750. If I do not change the cam would the motor be benefiting from the increased fuel or is it too much?
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1966 Chevelle
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af2
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Joined: 01 Sep 2003
Posts: 5578
Location: grassvalley, ca
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1933 Willys Coupe

PostPosted: Mon Feb 20, 2006 4:22 pm    Post subject: Reply with quote

All the carb changes in the world won't do a thing until you go through the trap in 4th gear at 5500 rpm. Gears and traction is the only thing that will fix you're car and make consistent runs.. After that you can see if cam, carb and any thing else you want to try is actually better or worse. You have to have a starting point. I have run 3.90 gears with 26" tires and never disliked it.
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oregonchevelle
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Location: Oregon
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PostPosted: Mon Feb 20, 2006 7:27 pm    Post subject: Reply with quote

O.K. Yes I think you are right. I am waiting on a friend to get the rearend out of his car to put in mine. So I was thinking of things I could do and not have to wait on.
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66burban
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1966 Chevrolet Suburban

PostPosted: Mon Mar 06, 2006 9:58 pm    Post subject: Reply with quote

Definately gears or at least try some short tires. If it is bogging when it hooks I would not be throwing a bigger cam in it, you will loose even more bottom end torque. My dads 66 impala with a worn out stock 454 has at most 250hp left in it. With street tires it would spin for the whole first 60' second gear would finally hook and our best time was a 9.98 in the 1/8. Then we got a used set of slicks from a buddy that were 25 inches tall, now it dead hooks out of the hole and bogs down the big block and that is letting the clutch fly at 4500 rpm. However it has now, with no other changes, run a 8.96 just by getting traction and a slightly lower gear ratio thanks to the smaller tire size. The 60' time went from 2.40s to 1.90s. Good luck, Coby
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oregonchevelle
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Joined: 19 Feb 2006
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Location: Oregon
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PostPosted: Tue Mar 07, 2006 12:58 am    Post subject: Reply with quote

Thanks for the good luck. Yeah If for some reason I do not get the new rearend I will try to find some shorter tires. I use drag radials now and they are 28 inches tall. I will see if someone at the track wants mine as they only have about 40 passes on them. Then get some shorter ones and see if that helps the 3.08 gears.
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af2
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Location: grassvalley, ca
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1933 Willys Coupe

PostPosted: Tue Mar 07, 2006 8:31 pm    Post subject: Reply with quote

I noticed a big gain by going from 3.08 to 4.11 without doing nothing else to the motor. The 3500 stall was the greatest thing since. (you know) Stall and gears flat work!!!!!!!!!!
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af2
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Location: grassvalley, ca
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1933 Willys Coupe

PostPosted: Fri Mar 10, 2006 9:14 pm    Post subject: Reply with quote

The way I look at it he needs 21" tires to help. af2
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af2
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Joined: 01 Sep 2003
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Location: grassvalley, ca
71842.50 points


1933 Willys Coupe

PostPosted: Fri Mar 10, 2006 9:21 pm    Post subject: Reply with quote

The 3.08 gears are killing me!!!!! We have to talk on the same line or I can't seem to deal with the situation. af2
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af2
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Location: grassvalley, ca
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1933 Willys Coupe

PostPosted: Fri Mar 10, 2006 10:31 pm    Post subject: Reply with quote

I hate to say but the 3.08 gears are killing you. I have said what gears you should run witch are 4.10 and you need to listen. Those gears are not extreem in yor're situation and should be considererd. To much said. AF2
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oregonchevelle
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Joined: 19 Feb 2006
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Location: Oregon
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PostPosted: Fri Mar 10, 2006 11:06 pm    Post subject: Reply with quote

Yes I agree with you. I have access to a 12 bolt with 4.10 gears but I am waiting on a friend to take the rearend out of his car so we can put it in mine. Will probably not happen til summer though.
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af2
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Joined: 01 Sep 2003
Posts: 5578
Location: grassvalley, ca
71842.50 points


1933 Willys Coupe

PostPosted: Sat Mar 11, 2006 5:23 pm    Post subject: Reply with quote

Hope you get to put the 4.10s in this summer. You will sh@t when you take off. I had a 69 Chevelle that had 3.08 gears with 3000 stall and ran
14.79. I got a hold of a 4.10 posi and gears and holy cow what a difference. The only problem I spun # 6 bearing before I could run it on the 1/4 and back then didn't have enough money to fix it, therefore I sold it for peanuts. Sad
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