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Original Message
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Opinions wanted for street 390 |
By Jim - 12/16/2001 3:59:00 AM; IP 209.162.200.197 |
I have a '66 T-Bird Town HT I'm building. It currently has a stock 390 with a few bolt-ons. I'd like to build a street friendly 390-406. I don't need cammer power... just something that can move my big beast at a nice clip. :) I don't want to get exotic with custom EFI or any of the outrageously priced and rare parts. Here's what I've been thinking of as a general blueprint:
rebuilt 390 shortblock (maybe 406?) Edelbrock Performer RPM package - heads; intake; cam Holley or Edelbrock carb (750 or so cfm)
My questions are:
1) will a stock rebuilt shortblock handle the 400+ hp fine? How far can I comfortably overbore a 390 block? .060?
2) Would it be cost effective horsepower to toss in a 428 crank to pump my engine up to a 406? I know the 428's externally balanced, but other than getting a vibration dampener and 428 flywheel, are there any other pitfalls to this conversion? Would I need different rods, or just different pistons to make this work?
3) I chose Performer RPM since they're new parts instead of 30+ years old, lighter weight, fairly streetable. Is the performance similar to an original CJ setup? Better?
4) Since Performer RPM's power curve really kicks in around 1500 rpm rather than just off idle, would it be a good idea to use a higher stall speed torque converter for my C6?
5) is it possible, without modification of the heads to install Dove roller rockers on these heads? If so, will the added performance be worth the cost for a street FE?
6) Is it recommended to use Mallory or MSD electronic ignition over the dual point distributors? Will there be any difference other than less maintenance?
Thanks in advance for any help. |
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