Cyl head suggestion for blown SBC
07-19-2021, 12:10 AM
#21
Racer
Thread Starter
Does anybody have a idea what spark plugs are best some are saying the n NJK r5671a-7 are good but what heat range should I be at from what I am hearing 2 heat cycles cooler than stock and what is the stock heat range .thanks guys not trying to hijack thread but I think its all related .
07-19-2021, 12:11 AM
#22
Racer
Thread Starter
07-19-2021, 12:12 AM
#23
Racer
Thread Starter
07-19-2021, 07:55 AM
#24
awsome
07-19-2021, 08:54 AM
#25
Dr. Detroit
Member Since: Mar 2012
Location: New Braunfels Texas
Posts: 9,963
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What is your total timing? Should be about 28-29 with 8psi boost......
I put Dart 200cc Iron Eagle heads on my friends 355 with a Dyers 6v71 at 8psi boost and it is brutal........total timing is 29 degrees.
Jebby
I put Dart 200cc Iron Eagle heads on my friends 355 with a Dyers 6v71 at 8psi boost and it is brutal........total timing is 29 degrees.
Jebby
Last edited by Jebbysan; 07-19-2021 at 08:55 AM.
07-19-2021, 10:31 AM
#26
Team Owner
When the MSD E-tec dizzy came out I bought it. you set digital dials for max advance, when it's all in, when the advance curve starts, max additional vacuum advance. I messed with all the springs, weights, and stops years ago!
I've worked on boosted cars and products like these are the only way to go. F.A.S.T. has some great products also
https://www.summitracing.com/parts/m...EaAhWlEALw_wcB
I've worked on boosted cars and products like these are the only way to go. F.A.S.T. has some great products also
https://www.summitracing.com/parts/m...EaAhWlEALw_wcB
The following users liked this post:
akdale (07-20-2021)
07-19-2021, 08:27 PM
#27
07-19-2021, 08:33 PM
#28
boost
When the MSD E-tec dizzy came out I bought it. you set digital dials for max advance, when it's all in, when the advance curve starts, max additional vacuum advance. I messed with all the springs, weights, and stops years ago!
I've worked on boosted cars and products like these are the only way to go. F.A.S.T. has some great products also
https://www.summitracing.com/parts/m...EaAhWlEALw_wcB
I've worked on boosted cars and products like these are the only way to go. F.A.S.T. has some great products also
https://www.summitracing.com/parts/m...EaAhWlEALw_wcB
07-19-2021, 11:23 PM
#29
Racer
Thread Starter
32 is where it is today. after 4psi I pull 1 degree per pound of boost.
07-20-2021, 02:34 PM
#31
Melting Slicks
Dutch Harbor has grown up whether we wanted it to or not. Fist Fights in the Bars are being replaced by families in there Kayaks. Same old Fish prices of 20 years ago so much for Covid making everything more. Well there is a shortage of Delo 400 15-40 lube oil and it is currently at crazy prices.
Have You tried running it with no octane booster ? Hasn't there been 40 different boosters in the last 40 years and every one of them sells with the pitch that this is the one that works ? Since You live in Alaska and Alaska moves by small Air Craft I would think that Av Gas would be a better option.
Have You tried running it with no octane booster ? Hasn't there been 40 different boosters in the last 40 years and every one of them sells with the pitch that this is the one that works ? Since You live in Alaska and Alaska moves by small Air Craft I would think that Av Gas would be a better option.
07-23-2021, 10:31 PM
#32
Racer
Thread Starter
Dutch Harbor has grown up whether we wanted it to or not. Fist Fights in the Bars are being replaced by families in there Kayaks. Same old Fish prices of 20 years ago so much for Covid making everything more. Well there is a shortage of Delo 400 15-40 lube oil and it is currently at crazy prices.
Have You tried running it with no octane booster ? Hasn't there been 40 different boosters in the last 40 years and every one of them sells with the pitch that this is the one that works ? Since You live in Alaska and Alaska moves by small Air Craft I would think that Av Gas would be a better option.
Have You tried running it with no octane booster ? Hasn't there been 40 different boosters in the last 40 years and every one of them sells with the pitch that this is the one that works ? Since You live in Alaska and Alaska moves by small Air Craft I would think that Av Gas would be a better option.
I live in Palmer, AV gas is available, it's not real cheap either and many places wont let you put it in your car. Wasilla Airport I have done it. Yeah it knocks without it and I agree lots of snake oil. The torco appears to be legit.
07-24-2021, 10:42 AM
#34
colder plug
I just ordered the number - 9 so 2 sizes colder and will gap at 30 I ordered some bushings for my distributor a 10 and 14 degree and a msd timing light . With that cold weather your blower motor loves that .
07-24-2021, 09:36 PM
#35
Well all I can say is trying to tune my msd distributor with out the e curve is a pain I am trying to get a total of about 32 degrees and I have 22 initial and the lowest I can go is 18 degrees centrifugal advance which is too much I found a company that sells a 10 and 14 degree bushing but it does not fit .