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#41
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96 heads right here ,300$.. Will solve your problem.
https://forums.maxperformanceinc.com...56#post6266056 |
The Following User Says Thank You to Dragncar For This Useful Post: | ||
#42
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MTBE was Much more dense than Alcohol is , so YES, it was easier to make this work in the 90's.
While alcohol does have a higher octane, its not Dense, so More heat is on its way, which doesn't help with knock, or ping.
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"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather |
The Following User Says Thank You to Formulabruce For This Useful Post: | ||
#43
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I have a 1970 455 D-port with 64 heads. When we rebuilt it I went with a 15cc dish piston and a 068 Melling cam. My heads cc’d our right around 89-90 so my calculated compression is mid 9’s or so. I run 93 octane all the time with no issues, never really tried anything with a lower octane. I did have it balanced also. It’s pretty smooth, plenty of torque and pulls hard…I was criticized for not going with a more aggressive cam profile but I’m super happy with results
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The Following 2 Users Say Thank You to 69hardtop For This Useful Post: | ||
#44
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Quote:
what T stat you run?
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"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather |
The Following User Says Thank You to Formulabruce For This Useful Post: | ||
#45
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Quote:
64 GTO with M20 and 3.55 rear |
The Following User Says Thank You to 69hardtop For This Useful Post: | ||
#46
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Pretty sure i use the 180 T-stats for best results. 160 being too cold, and 198 being stoopid hot.
Here's the short block status: Slugs keyed to Rods for thrust surface and valve relief. numbering stamped and sharpied. Many (6) grandkid interrupts so sharpie keeps the status.
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12.24/111.6MPH/1.76 60'/28"/3.54:1/SP-TH400/469 R96A/236-244-112LC/1050&TorkerI//3850Lbs//15MPG/89oct Sold 2003: 12.00/112MPH/1.61 60'/26"x3.31:1/10"/469 #48/245-255-110LSA/Q-Jet-Torker/3650Lbs//18MPG 94oct Sold 1994: 11.00/123MPH/1.50 60'/29.5"x4.10:1/10"/469 #48/245-255-110LSA/Dual600s-Wenzler/3250Lbs//94oct |
#47
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Gm ( ac delco) makes a 170 T stat I have used for many years as well, just a Fyi
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"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather |
The Following User Says Thank You to Formulabruce For This Useful Post: | ||
#48
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Working with some serious looking internals for the project. Aluminum rods, look like maybe GRP’s? Be a shame to drop the compression with guts like that. Its saying let’s ROCK…
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The Following User Says Thank You to Jay S For This Useful Post: | ||
#49
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Quote:
Maybe best to trade this Flattop shortblock for a dished 455 shortblock! |
#50
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I have also carved out a piece of 6x6 and use a little hand press to move it. Past experience has been 1/4" OVER PRESS.(due to memory)...so it lands where you want |
#51
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I often wonder how much cam,horsepower do you need for the street,I'm 73? My younger days ran the 068 in 389,400,421.i was happy with overall ,mileage,driveability, performance. Now I'm not into street racing or burning off my tires,breakage.i guess im 'stale'.
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The Following User Says Thank You to sdbob For This Useful Post: | ||
#52
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Quote:
I think 550+ hp is not happening on 87-89 octane.
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12.24/111.6MPH/1.76 60'/28"/3.54:1/SP-TH400/469 R96A/236-244-112LC/1050&TorkerI//3850Lbs//15MPG/89oct Sold 2003: 12.00/112MPH/1.61 60'/26"x3.31:1/10"/469 #48/245-255-110LSA/Q-Jet-Torker/3650Lbs//18MPG 94oct Sold 1994: 11.00/123MPH/1.50 60'/29.5"x4.10:1/10"/469 #48/245-255-110LSA/Dual600s-Wenzler/3250Lbs//94oct |
The Following User Says Thank You to Half-Inch Stud For This Useful Post: | ||
#53
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I ordered .080" thick for 4.20" bore, and maybe shipps by mid-Sept. $300 for the pair.
Piston velocity from 4.21" Stroke should keep the quench alive. Good ting i didn't drive to Norwalk (or local track); the Alum Water bearings were shot to a full wobble. Replace with BMG Alum $48 from Parts geek. Sum-2821 cam and liftems came in for Spare motor.
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12.24/111.6MPH/1.76 60'/28"/3.54:1/SP-TH400/469 R96A/236-244-112LC/1050&TorkerI//3850Lbs//15MPG/89oct Sold 2003: 12.00/112MPH/1.61 60'/26"x3.31:1/10"/469 #48/245-255-110LSA/Q-Jet-Torker/3650Lbs//18MPG 94oct Sold 1994: 11.00/123MPH/1.50 60'/29.5"x4.10:1/10"/469 #48/245-255-110LSA/Dual600s-Wenzler/3250Lbs//94oct |
#54
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SUM-2821 cam arrived: white boxed, looks fine but no identity stamped on the cam. hmmm.
SUMMIT Lifters arrived: Look fine but pump-up in oil bath not so firm. like .060" play left in each. Summit Timing Chain: looks fine but upper gear looks lightly used, lower gear looks refurbished. Both are new but sure have their visual ills. |
#55
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I would go out of my way and some of the good USA made lifters on this engine. I have some of those white box lifters, doubt I will ever use them on a engine. Not worth the risk.
You can buy a Cloyes "Morse style" heavy duty timing set for 25$. |
#56
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So what are the good US made lifters?
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#57
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Best lifters made in the USA are probably between Topline hylift Johnson, Muskegon, MI, which also make the lifter cores for Rhoads. Or Isky’s might be ok yet, not sure what their Pedegre is. No idea who makes summits lifters for Pontiacs, could be Eaton or Delphi? Last edited by Jay S; 08-21-2021 at 12:08 AM. |
#58
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#59
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Cam core has CWC cast. Just no informative stampings on either end.
Lifters had retaining wire, so i put my last set of C-Clips to the,. |
The Following User Says Thank You to Half-Inch Stud For This Useful Post: | ||
#60
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Finally got the Pan on. 1-piece Pangasket TQd to 12 ft-Lbs. Checked and mostbolts relaxed to 9 ftLbs, so re-torqued to 12. Probably check again later huh.
Rotated engine upright, Put in Cam and lifters with Rev Lube. Then did the rookie move with the Oil Pump Drive: off align. Magnet gotit. Misaligned again and walked away. Really never messed up the oil pump drive install twice. |
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