Im wondering if my 750 Holley DP is to big....I have an '89 iroc with a '75 350 bored .060,airgap intake ported to match the Dart 215cc ported and polished heads, longtube headersgoing into true duels with FM 40's, built 700r4 with 2800 stall and 3:42.......this is an all purpose car......daily driver,cruiser, and occasional racing

nope sounds good to me. just tune it up and it'll be fine.

Any respectable HP/TRQ numbers and 1/4 times with good traction at the track?

for me or you? my times are definately respectable at the track

for you....i need to know cam specs to get a general idea on your car, also are you running slicks, any suspension mods, etc.

Id like to know urs too ......my cam specs are 230/236 duration with .487 lift, and probably just a few minor suspension mods like drag shocks for now, and ill be running a set of 275/295s out back of one of the better tires out there, havent decided yet.

those are huge heads for such a small cam. does that thing lack low end torque at all?

i'm running larger cams in 305s at the track. also, street tires are pointless at the track if you want to go fast. look into some slicks if you want to hook up.

Im not sure with the cam.......its what was recommeded so,Im not to familiar with them yet. Its a flat tappet motor and there isnt TOO much to pick from.......but if anyone has a better cam to choose let me know before i put the motor back in

The best place to call for cam help would be comp cams(1-800-999-0853). There are plenty of cams too choose from, for the best left you should look some research and find out what is the maximum amount of air that your heads flow and at what lift? The duration is the power band and the lobe separation should be matched up with the weight of you car. also most (if not all) cam specs for lift are at 1.5 rocker arm ratio if you have 1.6 and you want to find out how much lift you would have you need to get the gross lift and divide buy 1.5 then multiply it buy 1.6 of just get your cam lift if and multiply it buy 1.6(or your rocker arm ratio)

1-800-999-0853

I have the same cam (XE274) only with smaller heads and more stall. I'm running a 750cfm Speed Demon and it works absolutely perfect... Keep in mind Demons are said to flow like 10% more than advertised so my Demon is quite a bit bigger than your Holley. I've never managed to get this thing to bog or backfire

Also, I've called Comp Cams 3 times in the past for a cam recommendation on the exact same motor. Every single time they recommended me a different cam and never once recommended the XE274 that I'm running now