rffanat1c

Hey all,

I'm putting this kit in my 84 Z28 L69 soon, Xtreme Energy 262H Hydraulic Flat Tappet Camshaft Complete Kit (recommended by Comp Cams). I believe I read before that the L69 stock intake manifold is already pretty decent. Since I'll have everything off, would any of you recommend a new intake manifold while I'm in there or leave the stock one in place. This is the only engine upgrade I'm doing other than headers. I'm keeping the carb the same along with the engine. Thanks!

Atilla the Fun

I have seen for myself, on an engine dyno, the Edelbrock Performer 2101 be worth 25 HP on a stock L69. Still think the stock one is good? To keep yours legal, you need the Performer EGR 3701. The XE262 is wrong. You'll be happier using the HE260 with a 3-position roller timing set on the 4 degrees retarded position.

rffanat1c

So how would I still use my Rochester carb with the 2101? Also why would the comp cam guy recommend the 262 and not the 260? Thanks for the info

Atilla the Fun

First, you want the 3701, not the 2101. The only difference is the EGR provision. And a few dollars. Stock carb bolts right on, no problem. Be sure to use a 4-hole gasket, not an open gasket. Second, the exhaust opening makes an extremely dramatic impact on low-end torque. Your heads don't need it to be early, and with headers, your exhaust doesn't either. You keeping the stock carb means you're keeping the computer, and that won't like the XE262 having 1 degree of overlap at 0.050". You'll spend hundreds on custom chips trying to sort that. So for both of these reasons, the XE262 is wrong. Using the HE260 keeps the stock RPM range, but gives you noticeably more in that range. It'll also drive well with stock programming in the computer. Your stock heads, better intake and headers could take a little more cam, like a Comp 12-253-4, if top end HP is your thing. It'll like it if you have the heads milled, use more rear gear, and a looser torque converter, but these last 3 mods aren't mandatory.

sofakingdom

iTrader: (1)

The XE262 is well and widely known by all who have used it, to be one of the best cams out there for the L69.

I would recommend using that, and avoiding cams that give more "top end" at the expense of the already lacking bottom end of a 305.

It works perfectly fine with the stock L69 programming. There are no "custom chips" to speak of available for those archaic "computers" anyway.

I've had the stock intake, the 2101 (which is the right choice BTW.... the 3701 is for the 87-up bolt pattern IIRC), and the ZZ4 on my L69. None of them were really different enough from each other to be worth the price, even as cheeep as they are, for reasons of performance alone. If your existing intake is OK (no leaks, broken bolts, damage, etc.) I'd suggest keeping it.

Since you already have at least 3.42 gears and maybe 3.73s, your gear is already perfectly fine. A higher stall converter might be alot of fun though.

Atilla the Fun

Sofa, stop posting when you really don't know. The HE260, 4 degrees late, will have way better low-end than the XE262. The 3701 is correct, the 3706 is the '87-up. Had Sofa bothered to check Edelbrock's website, he could have avoided this embarassment. As to the intake, are you gonna take HIS opinion over dyno testing?

rffanat1c

I want fact over opinion. Atilla, can you tell me why comp cams site lists the 260 for trucks and vans? I know most parts are interchangeable but I'm still curious why comp cam recommended the 262. I want to wake this motor up a bit so I'm not out for more hp just to have the numbers. I want to up the fun factor without dropping $3K or more into a new motor. I'm getting the whole shebang installed for $480 (cam, belts, lifters, valve springs, seals, and timing chain).

sofakingdom

iTrader: (1)

Sorry; I thought maybe OWNING a L69 and OWNING EVERY SINGLE ONE of the parts in question (except the exact cam... have a very similar Comp roller in my L69) and HAVING INSTALLED AND USED THEM would qualify as "know". But I see as usual, I'm the idiot.

I defer to the expert. :notworthy:

OP, the reason Comp recommended it is, it's an EXCELLENT cam for the L69. Plays well to its strengths and the strengths of the car around it (*cough*gearsandexhaust*cough*)

HighPressure

hey guys..
was just looking for some opinions on the 2101 intake on a L69 and found this thread.

Today I found a edelbrock performer 2101 intake and a holley carb wich says 8050B on the side and 80457-5 on top with 0636 in the line below, in our garage. This seems to be a 600cfm 4barrel carb.

As far as I know until I read through this thread now, is that the 2101 will fit on my L69. So, even if my Stock-Intake is good, I think it would be a power gainer ?? Or isnt there any change noticeable ?


I tried to check if the holley fits on the 2101.
the bolts are, but the rest I dont know? and are the cfm not too much? I read in some other threads its just right, but summitracing sizes the 2101 for the 305 with less cfm in their calculator, than this one seems to has (600cfm ?)

A friend of mine said that a carb wich is too big, will end up in less power.

what do you think ??