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Mod | | | Forums66 Topics128,091 Posts1,056,034 Members48,433 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Aug 2019 Posts: 172 'Bolter | | 'Bolter Joined: Aug 2019 Posts: 172 | Seems like the dyno results I got were similar to the 1955 GM reported net hp. But the gross torque comparison seems similar between the Gm and the shop dyno.
Makes me wonder if the apple to apple issue is more like the difference between the technology of GM 1955 factory dyno vrs the 2023 shop dyno ;or the 261 head is better in terms of hp over the 235 848 head ? ; or possibly hei ignition and fenton headers are both all candy | | |
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