Quote:
Originally Posted by 1JEWLDSSRS
Great advice here! All the items I used in my build came from BTR,( Brian Tooley Racing) and TSP, (Texas Speed and Performance). The cam was a TSP piece, the pushrods, retainers and locks, valve springs were all BTR pieces, they came as a kit from them. We went with the steel retainers and locks due to strength and longevity, titanium were lighter and could be used for their lightness for higher revs, but not necessary. As mentioned on the stall converter, you will want a higher than 3200 for that big cam, like mentioned at least a 3600-3800, or even higher if you want. Like one of our great members on here that really knew his stuff on these cars, "don't fear the stall"! I trust him and his builds, and his knowledge, so I went with the 4200-4500, all good! Love it. BO WHITE was his member name, great guy!!Thanks BO!! And as for the Johnson lifters, you WILL have to make sure to measure for the needed pushrod length as they are shorter than the normal size lifters we use. And as Dreams mentioned, those two shops really know their stuff, you can't go wrong with either one!!
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Thanks man! I definitely need to re-check my lifters. If my mod shop can’t measure lifter length, I might have to go your route…
I also wanted to ask about the fuel system. My tuner told me that without cutting pistons, it would be pushing the limits, and he recommended upgrading and optimizing my fuel system (injectors, ignition coils, and fuel rail). Do I really need to upgrade? I recall the stock L99 injectors are 42 lb/hr. Based on my target of 480–490 hp and the requirements for E85, that’s already very close to their limit. So if upgrading is really necessary, are there any recommended brands or part numbers? It’s been tough finding reliable info around here.
Also, my use case is track-focused, especially stop-and-go style circuits. I don’t run endurance races, but I do frequently hit high RPM. With zero tolerance for knock, is it still possible to reach my target power?
I looked into the 4500-stall torque converter you mentioned earlier, but I found a potential issue: paired with a BTR stage 4 camshaft, it seems like it won’t lock in 1st or 2nd gear because temps would spike too quickly? Not being able to lock 2nd on track might be pretty annoying… Would a 4300-stall converter be better? At least on a ~1:50 per lap circuit, I could use locked 2nd occasionally. I already have an independent oil cooler, transmission cooler, and an oversized aluminum radiator. Any suggestions? Thanks!