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#41
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Short block is basically together (the hard stuff anyway) still watching on heads getting milled. Official cam specs are 243-249 .638-.600 111ls installed at 109. Looking forward to seeing how the tri-power does vs the RPM intake vs T2.
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#42
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too bad no bathtub to throw on it for grins!Tom
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#43
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Actually we might be able to do that.... Good idea, I'll see if I can make that happen. I sure hope Slowbird is efficient in changing manifolds.
If not I'm dyno'ing a pretty stout pump gas engine soon using a Wenzler tunnel ram, I should be able to do a back to back and see how close the Bathtub comes. Last edited by PAUL K; 12-31-2020 at 12:49 PM. |
#44
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Im totally game! I can swap intakes pretty fast
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#45
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Make sure all these intakes are port matched to the cylinder heads. MANY years ago Tom offered to loan me a real Bathtub intake to dyno test with my 4.125 stroke 450 engine. It would of been fun but my intake ports would of been too big, that and I'd have to round up the two carbs.. The engine ended up making 680 hp at 6900/7000 rpm with a Victor intake and old Brad Urban Stage III 750 double pumper Holley.
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__________________
'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 ) Old information here: http://www.hotrod.com/articles/0712p...tiac-trans-am/ Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine) 5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension https://www.youtube.com/watch?v=qDoJnIP3HgE |
#46
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Quote:
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#47
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Actually Jim Robertson is converting mine right now,not sure on that one what I will have him make the port exit yet as it is going on a stock set of 96 heads.I with I knew for sure if a RA IV port would seal on the head I would have him make them IV size.For street driving im sure it would not make any diff of the miss match.Tom
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#48
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Xover pic
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#49
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Heads are finished, now i just need to find time to finish the assembly. Sadly time has been pretty short lately.
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#50
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Who did the casting numbers on the heads??
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66 GTO Nostalgia Super Stock/Street Legal Car 421 CID, stock block, Wenzler Intake, 2- Carter 750 AFB's, 3.90 Gears, Full Factory Interior, Full Exhaust, Stock Suspension 3750LBS 9.77@136.99 Multiple NSCA/NMCA World Champion 66 GTO 389 3x2, 4 speed, 4.33 gear, Montero Red 33K original Miles 67 GTO 2dr Post, 428, Tri Power, 3.55 Gears 80 Trans Am Black SE Y84 W72 WS6 |
#51
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618/628...
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1970 GTO (Granada Gold) - 400 / TH400 |
#52
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Paul K did the heads. Turned out pretty good in opinion.
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#53
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Quote:
with that small a cam. I just dynoed one of my motors and it was hard to get over 600 hp. Mine made 625.6 hp and 634 lbs I was hoping for more. I'll get a dyno sheet up here soon. GT. |
#54
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Oh Yea 550HP 589trq
GT |
#55
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Ya please share more details.
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#56
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462 Dyno
Yea sorry.
462 Factory crank eagle rods ross pistons moly-file fit rings E-Heads with 320 cfm 2.190 it-1.770 ext valves 72cc chambers cnc chambers 11:98:1 comp victor with 1050 dom and 1-inch spacer Cam is .626 lift 1.5 rocker dur @50 274-278 with a 106 LSA. I could'nt beleive it made most power at 37 deg timing with the newer chamber but it did. GT. |
#57
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Quote:
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#58
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Quote:
This uses an Isky 238 / 248 with .578 / .608 - 109 LSA. https://www.youtube.com/watch?v=rIIoazbO0d0 Hits 600 HP @ 5400 RPM and continues to climb. Induction flowing 300 ish isn't going to do it. |
#59
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HP=5900-6000
FT=4400-4500 GT |
#60
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