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Old 01-08-2023, 03:49 PM
SD455DJ SD455DJ is offline
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Join Date: Aug 2009
Location: Grand Rapids, MI
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I would love to hear more stories about the car...hopefully I can make contact with the family and see if they are willing to share some.

I'm amazed that the 350HO's came with 60 lb oil pumps with the hardened distributor gear...RAIII stuff...not to mention the Morraine 400 bearings also. The standard GTO YS & WT engines just came with the 45 lb. pumps and non-hardened dizzy gear. Dan discovered on the DeskTop Dyno that the 067 and 068 cams made the same horsepower, but the 067 made more torque (10 lb-ft from 2500 to 5000 rpm). Back in 2006, Dan dyno'd a '69 350HO that had .030 over forged pistons on forged Eagle rods, an actual 10.6 to 1 static compression ratio, no porting of anything, with a custom ground cam (201/217/112 at .403"/.418" lift), air cleaner base, and F-body log manifolds made 340+ hp from 5200 to 5500 rpm and 400+ lb-ft 3500 to 3900 rpm. A-body logs made the same power exactly. A-body RA manifolds added only 4-5 hp & torque max over the pull range of 3000 to 5500 rpm.

This 350HO was going to go into a stripper Tempest post coupe, but ended up selling the car and engine separately before that happened, so we'll never know how it did on the track, but low 13's likely with 4.10 gears and a free flowing exhaust system.

Dennis
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