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#41
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Standard blocks are very weak. I have never seen a T-block but the standard block has 7/16" main bolts instead of 1/2" on 1-4 and 1/2" instead of 9/16" on the rear. I had one that seized up and broke the crank in 3 pieces and ripped the 3 center main webbing's out of the block. The main webbing was very thin. I would be afraid to use a standard block for any of this. It was a 79 301 in a Grand Prix.
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Paul Carter Carter Cryogenics www.cartercryo.com 520-409-7236 Koerner Racing Engines You killed it, We build it! 520-294-5758 64 GTO, under re-construction, 412 CID, also under construction. 87 S-10 Pickup, 321,000 miles 99Monte Carlo, 293,000 miles 86 Bronco, 218,000 miles |
#42
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Stock cranks were subcontracted to Lenox.
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___________________________________ "Objects in mirror are closer than they appear" |
#43
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Years ago when I was bending tin I was going to build a 93-97 LT-1 style intake for my 400. I had just transplanted a 85 IROC TPI into an 83 Camaro (everything from the gas tank forward) and thought that the ECM while primitive would adapt well to a Pontiac. Made an assembly fixture to build an intake but did not follow thru. This short deck assembly would make a better candidate for this - and as stated would fit later cars, ie 82-92 Firebirds better.
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#44
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Tom very cool. Post this on 301garage forum. I know they will love to see this.
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Conrad 79 Trans AM 406 #12 heads Torker II intake Crower 60210 750 holley vac. sec. T400 3500 Stall 3:73:1 rear. ECMTTFMFers. IHTTFMFers. |
#45
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Quote:
Better to build the engine and show them that it takes 326-400 parts to make a better 301. Geno |
#46
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LOL,actually posted there days ago but no pics.There is someone on there already that is doing a 4in stroke CV1 race type engine,looks hi dollar,diff from my on the cheap(sort of) street build.Tom
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#47
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Although the more I learn about the 301T block, the less I like it (the block, as the foundation for this build). I've read rumblings of a possible short deck block from the AllPontiac folks (or was I dreaming again???) I hope the 383 holds up, and meets your expectations!!! You must have picqued Dave Bisshop's curiosity a lot, to get him to build that intake. As busy as we all know he is, it's a great looking piece. The single plane setup makes the most sense, from ease of fabrication point, a dual plane would have been a lot more difficult w/ the sharp turns and getting everything lined up, at the head..... Keep on keeping on....
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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... |
#48
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As far as I know there is NO short deck block on the drawing board.There is and has been "shorter" deck blocks on the market.It would take a change in the oil filter pad to make a true short deck block.Tom
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#49
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Wow what a neet piece. Can't wait to see the turn out on this build.
I'd like to see a big cam and make it a high winder but thats another story. This is a very interesting build though and can't wait to see the results. It's going to be a neat piece. GT. |
#50
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Crank went to the machine shop for turning today.Shim is being built.Joe and I have decided to run the 3122-3115 cam with 1.65s on the intake and 1.50 on the exhaust.The 3122 I is a 380 lobe and the 3115 E is a 400 lobe.Still not sure about lifters,Comp told me the pontiac hyd roller lifter should be good(SHOULD?)Tom
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#51
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Tom
How goes the 301???
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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... |
#52
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Crank is done,have bearings,waiting for my friggin machinest to make the bearing shim.He is holding up the whole deal.Called Rick Johnson this morning to see if he could knock a couple out for me.If there are any machinest reading this,I need a shim 3 1/4 ID and 3 3/4 OD and 69thou thick.Need a couple ASAP.Tom
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#53
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What do you need the shim for?
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Paul Carter Carter Cryogenics www.cartercryo.com 520-409-7236 Koerner Racing Engines You killed it, We build it! 520-294-5758 64 GTO, under re-construction, 412 CID, also under construction. 87 S-10 Pickup, 321,000 miles 99Monte Carlo, 293,000 miles 86 Bronco, 218,000 miles |
#54
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the thurst bearing web is 69 thou narrower on a 301 block than a 400 bearing.Much like a 428 block compared to a 400.Tom
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#55
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This may be easier to have laser cut out of 14 gauge cold rolled then lightly sanded down. What holds it in place?
http://www.sheetmetalguy.com/sheet_m...auge_chart.htm |
#56
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I thought the 301 would take 400 bearings. I have never built one. Did not know they were different.
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Paul Carter Carter Cryogenics www.cartercryo.com 520-409-7236 Koerner Racing Engines You killed it, We build it! 520-294-5758 64 GTO, under re-construction, 412 CID, also under construction. 87 S-10 Pickup, 321,000 miles 99Monte Carlo, 293,000 miles 86 Bronco, 218,000 miles |
#57
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Michael Oshawa built 1 option Judge basket case. 463, SD KRE 295's, CNC'd factory intake, Cliff's Qjet, Stump Puller HR cam, RARE RA manifolds, Pypes exhaust, T56 Magnum, McLeod RXT clutch, 3.42 12 bolt. 24 year project almost done... |
#58
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Two 1975 455 Grandvilles & '79 455 Trans Am ‘69 Camaro SS 396/375 (owned since ‘88) ‘22 Toyota Sequoia V8 ‘23 Lexus LS500 awd ‘95 Ford F-super duty 4wd 7.3 p-stroke & countless Jeeps & off road vehicles. |
#59
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Nope, the "HD 301" blocks were leftover 303's that had been stacked in the shop, someplace.
I do wonder this: would hard-blocking a 301T block help with some of the strength issues? Anxious to see how this one turns out. Have always regretted that Pontiac killed the traditional V-8 for the SBC in the Third Gen Firebird. The lighter V8 with the turbo woulda been a killer in that one. Likewise, always wondered what a true 303 Turbo in the last of the Second Gen Firebirds would have been able to muster... with real Pontiac heads, a good crank and decent rods. |
#60
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I'm waiting with great interest as well- small-bore Ponchos have always been ignored as a real performance engine, and a 301/383 stroker would definitely bring the 301 into the fold as real Pontiac high-performance V-8. I don't think a turbo would really be necessary unless you're trying to get power like a built N/A 455 (500-600 hp)- and at that level the stock 301T block would no doubt be the weak point. I think the point of the build is to make as much N/A power as possible with as many off-the-shelf 326-455 parts as possible and still retain use of the 301T stock block.
Even a 301/383 with traditional ported iron heads and a HFT cam should be able to pull down 400-425 hp with some revs. The 3.75" stroke crank should give it more than enough torque to impress most Pontiac guys. Geno |
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