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  #21  
Old 07-21-2022, 10:21 PM
Scott Roberts Scott Roberts is offline
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It needs higher compression.. not good on a 9.5-1 motor.. install It straight up.. has a good bottom end grunt for a heavier car... jmo.

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  #22  
Old 07-21-2022, 10:23 PM
Scott Roberts Scott Roberts is offline
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Originally Posted by Johnny406 View Post
Not intending to hijack but what is the minimum/maximum compression range of the 290b6?
11-1 or better in my opinion..

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  #23  
Old 07-22-2022, 06:14 AM
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In a 455 it seems that 11.5 is a good starting number for strip usage in something 400 cid or less 12.5 should be the minimum target.

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  #24  
Old 07-22-2022, 01:15 PM
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Lower signature info was street/strip use, and breached the headgasket between cYLs 2-4 after 4-years street duty. Probably low octane ping on a hot day on the highway.

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95 Towncar that needs more TQ.
Sold 2023: 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
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  #25  
Old 07-25-2022, 09:32 AM
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Jack Ferris Jack Ferris is offline
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Quote:
Originally Posted by 461-69bird View Post
Jack, mine is a 472 stroker, does that make a difference?
It may but I don't know what it would be. IMO a 106 LSA is pretty tight for larger cid. I went with a 110 on my 482.

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  #26  
Old 07-25-2022, 05:05 PM
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461-69bird 461-69bird is offline
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What car was that in Jack and was it street,strip or both?

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69 Firebird
472, Bullet SFT, KRE 85cc, Victor, 850xp, TH400, TSP 9.5" 4800, 3.90 10 bolt, Viking DA rears, QA1 single fronts, 3558lbs. best to date 11.14@120
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  #27  
Old 07-25-2022, 07:54 PM
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Jack Ferris Jack Ferris is offline
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One is a 64 Tempest the other a 72 LeMans. The 72 is a drag only car and the 64 saw both track and street time. Both engines built identical.

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