455 on a healthy dose of spray

[CUTLASSJESSE]

 

[yorkman1]

I love the gas so much that I have one line going to my engine and another one to my helmet. Seriously though, I've been running a 200 hp plate system in my '70 442 successfully for over 15 years. My set-up is a low compression 455 (L-2390's) with E heads, main studs & straps, oil restrictors, "O" ringed block, loose clearances for NOS, 224/234 hydraulic cam, with a heavy race weight of 4,075#. It runs 13.6 on motor and 11.50 on juice with 3.42 gears and 2.5 flowmaster exhaust. Hooker 1-7/8 headers, no-hop bars, RJ12YC plugs, and a complete MSD ignition. The key to survival (and performance) with NOS is a good FUEL SUPPLY and an IGNITION RETARD. It has a Mr. Gasket/Holley mechanical fuel pump for the carb and a dedicated electric fuel pump for the NOS. I run 36 degrees total on the engine, but my MSD 3 step retard pulls 9 degrees of timing out on the gas. Best of all, the engine can run on regular gas for cruising, but I generally use 93 octane for street & strip. I would have liked it to be faster on the motor but I believe the low compression is the secret to survival with a big shot. This motor never pings like most motors with high compression pistons and iron heads. I'll post a picture separately.

 

[yorkman1]

This is a picture of my 70 442 HT discussed in the post abov, but I have a 1979 G body Cutlass and the red convertible in the background.

By yorkman1 at 2010-11-21

If you click on the image I believe you will see a smaller image.

 

[Phoenyx]

yea i plan to build the engine like a freight train hoping to get in the 12s just on motor

lol, trying to get 12s on a 455 should be as hard as trying to get 14s out of a 350... pretty easy. 😀

 

[CUTLASSJESSE]

just got a line on a 68 olds 350 with #5 heads so the 455 may be on the back burner for a few months

 

[87oldssalon302sbc]

If you're still in the market for some engine parts I still have all the cams and valve train parts I had the last time we spoke. I have two complete 455s,two 403s and one 350, and all sorts of parts for oldsmobile. Let me know if you're intrested and we may can do some dealing.

 

[CUTLASSJESSE]

you wouldnt have any 455 heads would you? if so which ones

 

[CUTLASSJESSE]

just send me a pm of the parts you have to sell

 

[layedoutregal]

just got a line on a 68 olds 350 with #5 heads so the 455 may be on the back burner for a few months

i just did a 70 350 with #6 heads, fyi i still spent 5 gs on the build, thinking about using nos as well and was wondering how big of shot i can do with the motor? not trying to dip in on ur post lol, but if any one knows id like to have the info

 

[CUTLASSJESSE]

Does anyone know how much nitrous the stock olds pistons will handle? Still trying to get stuff together for this build