The V8 Owners Forum -

Good day all.
I have a mgb gt with stock V8 and a 4 barell holley carb. I have given some consideration to a supercharger. I think the Low compression standard 150hp 3.5 would do well with a boost.
I have seen a few on line but would like some advice from anyone who's stuck a charger on a similar engine. Pros and cons.
Many thanks.

I supercharged my 3.5 using a centrifugal supercharger, these can mount anywhere on the front as long as the pulleys line up.
I did find the V belt was unsuitable to transmit enough power without slipping though.
Even a modest boost pressure gave a good 'seat of pants' improvement.

the benefit of the centrifugal supercharger is it won't interfere with your bonnet, however to get the most out of any supercharger/turbo - fuel injection and mapable ignition are better than carbs and mechanical dizy.

My first supercharged rover was a 3.5 with Land Rover pistons, IIRC 8.5 compression, I had a Wade ro34 about 5-6 lbs of boost,
Certainly ran ok, but power ,especially boosted power is addictive, and before you know it,
You’re hooked, you have been warned

So taking that its a standard spec 150hp engine. And assuming the engine is in good working order, would I get away with do little else. And would it pump through the holley

Yes, as long as you don’t have to much boost, get it on a rolling road to sort out the timing, (don’t ask me how I learnt the expensive way)
Put a grade cooler spark plug in, a boost referenced carb is best, but a good rolling road will sort it out (fatten it up) and make sure you’re ignition system is top notch

My 4.8 with a Procharger D1SC centrifugal supercharger fitted, for an idea

Blown v8 wrote: ↑

Thu Nov 26, 2020 5:41 pm

My first supercharged rover was a 3.5 with Land Rover pistons, IIRC 8.5 compression, I had a Wade ro34 about 5-6 lbs of boost,
Certainly ran ok, but power ,especially boosted power is addictive, and before you know it,
You’re hooked, you have been warned

What size carb did you get boost referenced Sir? @Blown V8

I had a 390cfm Holley, Real Steel upgraded it for me, but that was a lot of years ago