What do you think would be better for an F1R with Victor jr heads @ 10-1 comp. ratio for DR competition. 4.125 bore with a 4.00" stroke or 3.75"? And why?
What do you think would be better for an F1R with Victor jr heads @ 10-1 comp. ratio for DR competition. 4.125 bore with a 4.00" stroke or 3.75"? And why?
Current. 420" N/A 1.26 60'-9.48 1/4 On the bumper!
New Build- 400" Dart Iron Eagle. 4.125 bore 3.75 stroke 10-1 Comp. F-1R Procharger.
3.75'' stroke = allows more room for the ring package compared to the compression height needed with the 4.00'' stroke.
any chance of going with a 3.875'' stroke for a couple more cu or just crank the boost for more hp ??
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