ok new idea

[will6318]

I just came across a '75 454 what do you guys think of putting this in an 87 monte? for those of you who don't know the car has a 9" rear and a th400. What iwant to know is, how hard is it to swap a bbc in? Oh and how much work do you guys think the motor will need to get the car into the 10's

 

[beermonkey9417]

ya might wanna check the drag/heavy mods section on that one.

 

[86Cutlass383SR]

You might want to lurk around on MalibuRacing.com. Same basic car and I know some of these guys have "been there, done that". Should be able to answer most anything you'd want to know.

 

[midwestls]

Far as I've been told thus far headers are the only major obstacle, in that they have to be for a BBC G Body and the driver side has to be assembled in the car (a tube or 2 go around the steering shaft). And valve cover clearance. I've been told if I run low profile valve covers I'll be alright. I might be wrong and would love for someone to tell me if I am cause I'm planning on putting a 454 in my 87 LS. I know I've only got less then 1000 on my LT1 since I yanked the 4.3 but I drove my buddy's 79 with a 396 in it and I gotta have a big block. It'll prolly be a year or two tho 😢

 

[outsider_27]

There is a guy on oldspower.com that is running a 396 in a Monte, but he's running manifolds, not headers.

 

[bbc540racer]

bbc monte carlo

I have a 86 with a 540 alcohol motor. I use a conventional solid mount and tall sheet metal valve covers with no problems. As far as the headers, I have been running a set of Hooker super comps that have worked great. I'm needing a bigger set for this motor but these headers worked great for my 468 motor. Hope this helps. If you have any questions let me know.

 

[bbc540racer]

bbc monte

Oh and as far as a 10 second car goes my first big block in the car was a pump gas 468 that ran 8.58 in the thousand foot (about 10.60 in the 1/4) with only stock 781 oval port heads and a mild solid roller cam (268-278 @ .050 .720 lift). This was all motor, no nitrous, but was on a 10.5 inch slick.

 

[Blake442]

Tall valve covers won't clear the A/C box.
Otherwise it slips right in.
Lay the headers in the engine compartment before you put the motor in.

 

[bbc540racer]

The hooker super comps slip right in from the bottom. I dont know about the a/c box I dont have one.

 

[Blake442]

I figured they would, but thought I'd put it out there. Did you have a hoist to use? We did it in a driveway, so clearance was limited. We couldn't get the car jacked up high enough when I helped do it on my buddys car, so we had to hoist the motor back out about 6 inches to get them in.