My blow thru build

[walkmang]

1984 regal 4.1 200r4 been working on it since last Oct. Thanks 84beastregal for all the parts.

 

[b4black]

Awesome. Thanks for sharing!

What's the alternator bracket from?

 

[walkmang]

Original air pump bracket and a piece of flat steel from home depot and my angle grinder

 

[Mike T]

Nice project! I'm assuming you left the n/a pistons in it?

 

[walkmang]

Yes, if I kill them im gonna start another motor build. I plan to be real conservative at first

 

[Mike T]

What are you thinking maybe 5 or 6 psi?

 

[walkmang]

Yeah that range, my first build not sure what to expect

 

[dr_frankenstein]

Congrats! good job brother!

 

[walkmang]

Thnks dr.

 

[84beastregal]

Buick ftw


Sent from my iPhone using Tapatalk

 

[walkmang]

Update to my build, car is running and I'm in the tuning process, running 8-9 lbs of boost with a front mnt intercooler.

 

[WarWagon]

Peg leg, get it! Sounds alright.

 

[walkmang]

Yeah one tire fire for now.

 

[crashedout1]

What ignition did you use for boost timing retard ?

 

[WarWagon]

I'm certain, Walkman is using a 4pin HEI module in a locked out computer distributor. Timing retard is not relying on boost but rather the offset of trigger signal on the VR sensor as RPM's increase.

 

[walkmang]

I got rid of the stock computer controled distributor and got a 4pin vacuum advanced unit, but once I hit 3rd gear with 10 lbs or high rpms, timing is crap, I get serious rattling , you can probably hear it in the video. Trying to lock down this timing issue myself

 

[WarWagon]

Alright in that case you will have to limit the amount of mechanical advance in the vacuum distributor to stay near or under 22* while on load, 3rd gear or WOT.

 

[walkmang]

What do you think, heavier springs on the weights or just get some sort of ignition box, I'm assuming my timing is way up in the 30°s at WOT.

 

[WarWagon]

Ignition box upgrade is always a good idea, as is heavier springs on the mechanical advance. Since it's a vacuum distributor you can lock out the mechanical advance completely and set the lower max advance under load and use the vacuum to pull it back up when your not on it.

 

[walkmang]

Sounds like a plan, I've pretty much followed your first setup with some tweeks here and there and the car has surprised the hell out of me, with that being said in your opinion would you stick with the mallory ign box or is there something out there that you would upgrade to.