Ended up going back to a ported stock intake with an AUS 48 lb/hr spider. Put the smaller cam back in a while back too. Just changed out the muffler and tailpipe. Dual 3" in Walker quiet flow...

http://www.gearhead-efi.com/Fuel-Injection/showthread.php?7701-LLoyd-Elliot-Ported-Assault-Racing-205cc-heads

Still have this pig and it now has an 11:1 383 in it. Just upgraded the cam from a 218/228 on a 110 lsa to a 232/244 on a 108 LSA. Waiting on the 1200 cfm 4bbl throttle body to go on the marine...

Been on vacation this week from work. I got the engine in last night and buttoned up today and fired up a few hours ago. I bumped the WOT shift speeds to 6,200 and left the old tune in place. Drove...

Been at this old Express van again. Swapped a 5.13 re-geared 10.5" full floating 14-bolt under it. 1 ton springs. 1 ton front control arms and knuckles up front. All the 1-ton brake parts. ...

Well it is time to pull this old pig apart yet again. I pulled the old L31 and opened it up to fix an oiling issue about 6 months ago. I put a Lunati Bare Bones 218/228 cam in it. I failed to...

Had a chance to mess with it a bit more today, then put some E85 in the tank. This was on 93 octane and it pulled nearly 5° of timing on this run!!! After adding 26 gallons of E85 and reflashing...

Finally have it dialed in pretty well. Its cool, dry and windy. Was running in my normal testing area but into a bit of a headwind (~15-20 mph out of the North). When I let off around 80-85 mph it...

So I have a few snags to overcome such as rebuilding the dog house area, a new doghouse/engine access cover and finding a frame to motor mount bracket all of which have been discontinued.

I am...

Thanks for the info Tom!!

I found the old saved files from the older GM Powertrain information I had saved on these engines. Including these GM Marine power charts. The 375 HP engine used the...

I am confused! Not working with a LS1 here maybe someone else is though. I am working with the 8100 aka 496 big block which is a different animal. GM has a TSB to replace intake bolts and a revised...

I am starting to think so!!! The L31 in my 1997 Express rolled down the assembly line with died in 2004 at 57K miles due to hydrolock on startup breaking a rod and sending it through the side of the...

I pressure washed the 8.1 today and popped it open. It was all factory down to the plugs. I about panicked when I saw how much oil it had been burning that is until I discovered the source. The...

Thanks Tom!

I may get a set of the Raylar roller rockers somewhere down the road.

I also believe it is an underated engine and I can't wait to have it running.

Here is what I found for the...

I did a little more research and decided what the heck and ordered the cam. Might be a shade big for many heavy haulers, but my Express is fairly light compared to a Dually or a Workhorse. Seems...

On a side note I have a line on an entire cam/valvetrain from a very low hour 425 HP 496 Mag Mercruiser for $300 that was given the Raylar treatment. Cam/Lifters/Pushrods/Guides/Studs/Rockers and...

I just don't want the added power loss!! My 4L80E already has the dual stator 4.3 converter that stalls 2,300 rpm behind the 350. The 10.5" FF I have has 3.73s in it. I want 4.10s in the back but...

I now own an 8.1, picking it up tomorrow.

I sent you a message. I am hoping I can acquire the 8.1 before it sales. I found a $548.00 check in my mailbox today when I got home. Refund after refinancing my car with a new bank. Really made...

Work on the chassis donor is progressing. Sold my spare 4L80E for $450. Up about $700 of the $1100 I spent on the van and getting the van to me. Still have a running L31 and a ton of small parts...

The frame donor fading fast!

http://i243.photobucket.com/albums/ff172/Fast355_album/20150826_092752_zpswtpjqgpn.jpg

Here is the reason for the 1-ton frame.

http://i243.photobucket.com/albums/ff172/Fast355_album/20150826_095953_zpsd2s4lphd.jpg

Express vans are body on frame. I actually got the donor van running today without spending a dime. No knocks, no ticks, runs smooth.

No idea on that one....Same idea can be applied to a pickup truck or SUV or any car for that matter.

I also picked up a donor with a rust free and straight chassis. My Express was hit in the passenger front wheel and repaired at a young age. The frame was tweaked and stretched but it has never...