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#1
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Dyno day is almost here!
Been a long time coming! Way back in April of 2013 I broke my old stock block 462 in half on the street near my home.
It was a block failure...split from main up through the cam tunnel. This old engine with a set of 64cc Eheads was powering my 3600 lb GTO to 9.8’s in the quarter. I swore I would never build another engine for it unless it was an aftermarket block. In the meantime my wife and I found 80 acres of land we wanted so I stored the GTO and we purchased the land and I fenced it which pretty much took our extra money for closing and fencing. A year later we had some more savings and decided we wanted to live on our land because we loved it so much so we built a house and shop on it. Again no extra funds...I saved a couple bucks and bought an IAIIA block in 2017, about a year later I bought a set of heads, 2 intakes, shaft rockers, lifters... In 2019 I took the GTO to a chassis shop that mini tubbed it, rack and pinion steering, control arms, brakes, coil overs, crossmembers, tube core support, and a lot more roll cage. 2020 I decided it was time to start putting things together. I also decided the end result would be Mechanical Alcohol injected 535 CI so I needed an intake and sent a Gutsram I got with my wide ports to Hampton Blowers to get a top put on it... We bought a cam based on 12.5-1 Blown alcohol. Here is what it looks like with the 8-71 and hat... But we are dynoing it built like this on gas and I will add the alcohol injected supercharger later... What do you think this 380 CFM wide ported, 12.5:1, 535 ci engine should make on gas with the cam listed on the cam card with a 1050 dominator, Victor intake? We are dynoing Friday... Sent from my iPad using Tapatalk
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1969 GTO, 3370 lbs, 10.5” tire... 07/31/21 Norwalk 9.42 @ 142 1/4, 5.95 @ 115 1/8th mile 3400 lbs...535 with Junk dinosaur Eheads |
#2
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Congrats!
It's been a long time coming for you!
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Carburetor building & modification services Servicing the Pontiac community over 25 years |
#3
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First and foremost, im glad to see you're going injection and not carbs!!
That lobe separation looks a bit tight for a blower car in my opinion.. Last, im most impressed with what you did to your block! Thats a true racer right there.. |
#4
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#5
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Quote:
I thought the same thing on LS of the cam but that is what my engine builder got as a recommendation from Comp...I figured it should have been at least 114. That blown up engine lasted a long time. I changed the oil in it and found a main cap dowel pin on the magnetic drain plug. I pulled the engine and found where it came from and pulled the cap and reinstalled it. Nothing looked out of place so I buttoned it up and I decided to take it for a rip down the Highway...it got just into high gear when it let go...even more impressive is it lunched the converter, broke the trans bellhousing, and took out the ring gear in the rear! |
#6
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Nice!
Who did the wide ports (they look cnc'd)? What valves are in them? |
The Following User Says Thank You to slowbird For This Useful Post: | ||
#7
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Glad to hear its almost done. 👍
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The Following User Says Thank You to Scott Stoneburg For This Useful Post: | ||
#8
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725HP?
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72 lemans,455 e-head, UD 255/263 solid flat,3.73 gears,,,10" 4400 converter,, 6.68 at 101.8 mph,,1.44 60 ft.2007 (cam 271/278 roller)9"CC.4.11gear 6.41 at 106.32 mph 1.42 60 ft.(2009) SOLD,SOLD 1970 GTO 455 4 speed #matching,, 3.31 posi.Stock manifolds. # 64 heads.A factory mint tuquoise ,69' judge stripe car. 8.64 @ 87.3 mph on slippery street tires.Bad 2.25 60ft.Owned since 86' |
The Following User Says Thank You to scott70 For This Useful Post: | ||
#9
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Looks great! Well worth the wait.
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The Following User Says Thank You to PAUL K For This Useful Post: | ||
#10
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Where are you getting it dyno’d at?
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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... |
#11
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You are going to have a great time with the new engine,congratulations. Engine looks bad to the bone, mean.
That engine blown must have been quite the experience. |
The Following User Says Thank You to Dragncar For This Useful Post: | ||
#12
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825 HP
Stan
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Stan Weiss/World Wide Enterprises Offering Performance Software Since 1987 http://www.magneticlynx.com/carfor/carfor.htm David Vizard & Stan Weiss' IOP / Flow / Induction Optimization - Cam Selection Software http://www.magneticlynx.com/DV Download FREE 14 Trial IOP / Flow Software http://www.magneticlynx.com/DV/Flow_..._Day_Trial.php Pontiac Pump Gas List http://www.magneticlynx.com/carfor/pont_gas.htm Using PMD Block and Heads List http://www.magneticlynx.com/carfor/pont_pmd.htm |
The Following User Says Thank You to Stan Weiss For This Useful Post: | ||
#13
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When the engine let go , did it look like that in the car or did it fall apart while lifting it out? Thats scary..
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My Half AN Injun..... |
#14
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Engine looking good with the blower!
Quote:
781 HP (Naturally Aspirated)
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
The Following User Says Thank You to johnta1 For This Useful Post: | ||
#15
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810 HP NA
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Darby 74 Grandville 2Dr 455 c.i 4550# 2011 1.60 60 ft,7.33@94.55-11.502@117.74 2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, 6.314@108.39 9.950@134.32 M/T 275/60 ET SS Drag Radial 2023,(Pontiac 505) 1.27 60 ft, 5.97@112.86, 9.48@139.31.... 275/60 Radial Pro's |
The Following User Says Thank You to grandville455 For This Useful Post: | ||
#16
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They are hand ported. I have no idea who did them originally originally. I had them flowed and that was it other than having 2.19 titanium intake and 1.77 stainless exhaust.
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#17
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I hope a little more. My blown up stock block 462 way back in early 2000’s made 716 with standard port e heads. You may be right though but I would be very disappointed.
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#18
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#19
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It actually just stopped immediately and did a quick lock up of the rear and then release.
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#20
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The oil pan and intake was holding it together...
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The Following User Says Thank You to 69Goat1 For This Useful Post: | ||
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