carbed lt4...decided AGAINST hotcam
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Supreme Member
iTrader: (-1)
Joined: Mar 2002
Posts: 1,728
Likes: 2
From: SE Michigan
Car: Bright Red 91 GTA
Engine: CARBED LT4
Transmission: MK6
carbed lt4...decided AGAINST hotcam
ok guys its time for me to start round in up the...
the thing that i havent picked up is the cam...i was going to use an lt4 hotcam (i still may)..i ran about a dozen cams against the hot cam and i found it beat about 5 times
with my combo the hot cam made 435hp@6000 and 427lb. ft.
4500
the cam i was lookin at is comps XR258HR-10, not only cuz it makes the most power but intake duration was 258 degress..but then i tried to change the timing specs from seat-to-seat to .050 and the duration didnt change...is 258 its advertised or is that the duration@.050?
i looked through all the XE's but i didnt find one i liked...they all wanted to rev the **** out of it..the 258 makes it peak at 5500 so i shift at 6200 and ill be good
does ant company sell this cam in a kit?...like cam and lifters..
the springs are with the heads (if u guys need the spring stats for some reason then let me know)
i dont really want a big cam..this is still going to be my daily ride..
ii have a really good flowin set of heads so i dont need a massive cam to get the charge in and out..
im open to any input u guys have!!
thanks
Rob
the thing that i havent picked up is the cam...i was going to use an lt4 hotcam (i still may)..i ran about a dozen cams against the hot cam and i found it beat about 5 times
with my combo the hot cam made 435hp@6000 and 427lb. ft.
4500
the cam i was lookin at is comps XR258HR-10, not only cuz it makes the most power but intake duration was 258 degress..but then i tried to change the timing specs from seat-to-seat to .050 and the duration didnt change...is 258 its advertised or is that the duration@.050?
i looked through all the XE's but i didnt find one i liked...they all wanted to rev the **** out of it..the 258 makes it peak at 5500 so i shift at 6200 and ill be good
does ant company sell this cam in a kit?...like cam and lifters..
the springs are with the heads (if u guys need the spring stats for some reason then let me know)
i dont really want a big cam..this is still going to be my daily ride..
ii have a really good flowin set of heads so i dont need a massive cam to get the charge in and out..
im open to any input u guys have!!
thanks
Rob
Supreme Member

Joined: Feb 2000
Posts: 1,416
Likes: 0
From: Johnstown, Ohio
Car: 84 Z28
Engine: 355 (fastburn heads, LT4 HOT cam)
Transmission: 700R4
Axle/Gears: 9-bolt, 3.27
Personally, I like my LT4 HOT cam....So far. I have carb issues to get over before I can say that I like it for sure, but so far it's nice. Slight lope at idle, turns good RPM's, and should be pretty efficient on fuel (after the engine's broke-in, and the carb is right)
I beleive that 258 is advertised. Anyways, I heard the hotcam is made more for a fuel injected car (something about the centerline) and there are better cams for a carbed application. Maybe someone can shed light on the situation. I have an XE262 non roller (218/224 @.050) in my car and it is a good torquey cam with a power peak around 53-5500 rpm.
The LT4 hot cam is a good cam. It has the popular position of being the largest cam factory FI can get away consistantly. Therefore it's good for 100% of the L98s out there.
Us Carbed guys have more options, we can use any cam we want. If you're looking for a cam in that size class anyway, it's a fine choice. Narrow down exactly what your criteria are, and then look for one that matches it.
Us Carbed guys have more options, we can use any cam we want. If you're looking for a cam in that size class anyway, it's a fine choice. Narrow down exactly what your criteria are, and then look for one that matches it.
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