77 motorhome 440 vs 71 360-what to use???
ya'll are great! Bmsjax, we're only about 35mins apart ever been on that website socalcarculture.com? They have a list of shows in our area it's great! I appreciate all the input very much....i've been gathering quite a bit of information on the 360 i have (both motors are complete from intake to pan) and it seems like a decent setup with a performer rpm, 2.02 heads, a nice cam, and a 750 i should be close to 350hp. The thing is though is that it is a "J" head motor, meaning by the time i have valves put in and machine work done, i might as well spend some more to buy the RHS heads. With the MH 440 heads, i don't know the specs but is there any performance in this head (new valves+pistons=power potential?) Thanks again, you guys have been wonderful:mrgreen:
I've been to that site now :D hahaha. Ya, I grew up in the Fullerton area, I'm only down here for work. So if you want some help anytime let me know.
MH heads flow decent enough. Before aftermarket heads came around the 452's were the ones to have. But here's some flow comparisons(intake);
------Edelbrock E-street heads ------Stock 440 452 heads
.100 -------------- 79 ---------------------64
.200 ------------- 143 ---------------------131
.300 --------------207 ---------------------169
.400 --------------256 ---------------------187
.500 --------------278 ----------------------203
So aftermarket is, of course, better.
Stock heads, stock MH compression(9:1), performer intake, performance cam, headers and a 700cfm 4bbl carb and you should be looking at 370-380 HP. So for $1000 your already only 20HP from your goal. Have a little work done to those heads and they'll probably flow real close to the eddy's. $300 for pistons w/10.5:1 compression and your lookin at 420-430HP.
With the 360 spec you listed your lookin at 380-390HP. Thats with intake, cam, headers, 750 carb and j-heads that have been worked real good. Don't know the price on all that... $1400? Less if you know the right people.
It all looks pretty close in cost to hit 400HP with either. The difference is the BB will make that 400HP 1000rpm lower with 100lbs more torque than the SB.
I chose the 440 over the 360 cause a BB will always make more power than a SB, the 440 A-body is unique, 'who wants to see another 360 Duster?' was my thought. And I like a challenge...