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#61
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It's a 950 Ultra HP 0-80805.
1.6" venturi and 1.75" throttle blades. It's a true 950 Sent from my SM-G991U using Tapatalk |
#62
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Quote:
I had a Pontiac 455 crank break at the same spot, several respected builders said either the balancer was junk or the bolt wasn't tight. I had an OE type non-SFI replacement balancer on it, bolt was tight. The balancer did wobble slightly though. I use forged cranks and SFI balancers that are properly fitted from that incident on. EDIT: In my case, the engine just 'shut off' and wouldn't start. I had someone turn the key and I noticed the accessories weren't turning.... .
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. 1970 GTO Judge Tribute Pro-Tour Project 535 IA2 http://forums.maxperformanceinc.com/...d.php?t=760624 1971 Trans Am 463, 315cfm E-head Sniper XFlow EFI, TKO600 extreme, 9", GW suspension, Baer brakes, pro tour car https://forums.maxperformanceinc.com...ght=procharger Theme Song: http://www.youtube.com/watch?v=7zKAS...ature=youtu.be |
#63
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Holy Sheepdip, Batman!!!
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1977 Black Trans Am 180 HP Auto, essentially base model T/A. I'm the original owner, purchased May 7, 1977. Shut it off Shut it off Buddy, I just shut your Prius down... |
#64
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Reviving thread again... I replaced a brand new Pertronix dizzy in my 81 TA last night. I bought a used stock HEI from a board member here. It was 915 when I finished and figured I would hit it today. I got home at 6 and ate some dinner and went out in the garage to put the wires on, I put them on and cranked the starter and it fired right up. The initial timing I set at 12*, I let it gain some heat and adjusted the choke a bit leaner. This engine would idle at 450 rpm smoother than a babys butt, but I adjusted to about 750 rpm, the idle screws needed 1/2 turn out more too, vacuum went from 15" to 16.5". I let it warm fully and drove it tonite. WHAT A DIFFERENT FREAKING CAR!!! Smokes tires with ease, no more black puffs on start up, and great throttle response!!! Still probably a high 14 second car at best but it does everything I want it to now. Some differences I noticed in the two dizzys was the gears were cut very different, the weights were floppy as hell, the cap seemed to never line up correctly...even off the car. So happy! I'll have another problem though you guys can help with...rest assured.
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" Is wearing a helmet illegal" Mike Kerr 1-29-09 |
The Following User Says Thank You to 4dblnkldude For This Useful Post: | ||
#65
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HEI ..IS.. a High energy ignition. Typically .045 plug gaps too. I have seen a HEI out perform petronix before.
You can even buy a small cap carbon spark rod and increase the spark voltage even more.
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"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather |
#66
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The HEI in my '91 specs 060 spark gap! I back it down to about .045 just because, no need to jack up the voltage.
george
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"...out to my ol'55, I pulled away slowly, feeling so holy, god knows i was feeling alive"....written by Tom Wait from the Eagles' Live From The Forum |
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