Small amount of nitro or m5

[masracingtd1167]

Hi Spud I am not shure if this would work for me or not . If I wanted to pick my car up a little let's just say 3 tenth's do you think going to m5 methanol or 20 pecent nitro would do it . The only problem I see is my compression is 14.8 . I do run  pretty big cam 280 Int 294 Ex 114 CL I run a pair of Ron's terminators on a sheetmetal intake a 0and a half pump 37 nozzle 88 main jet no high speed The way the car sit's right now it will go high 7.40's and that's with a tight 6400 converter and 1560 lbs . I have sprayed it with a 200 shot of nitrous and gone 6.94 . I would like to be able to run the 7.0 pro class but you can't run nitrous . Also if I took all the nitrous stuff off it would be about 60 lbs lighter Thank's Bill

[slingshot383]

I've run 18% in a 528 Mopar with iron 440-1 heads and that much compression.  Car loved it, #3 quench area of the head, not so much, blew out a 2.5" x 1.5" piece of the head.  But, I think it was a thin area and was destended to fail anyway.

[Spud Miller]

Hi Bill,

I don't think 20% is going to get you 3 tenths. Probably take 30% or a little more and you would definitely have problems with that much compression ratio. Heads, head gaskets, bearings...

Lower that squeeze and I think you'd do great by putting more juice in it. Swap out those pistons for something with less dome and away you go!

[George]

I played with some M5 late last year and it didn't show any improvement over my " cheap stuff".

[masracingtd1167]

George did you fatten it up at all? They say about 10 percent richer

[COKER]

'Spud,

Congratulations on your magazine article you deserve it. On the low amount of nitro issue Rich Barnard out of Ohio had a big block with aluminum heads and 12.5:1 compression on alky and best he ran was 8.16 and was frustrated with the performance of the car. I mixed him up 25% and right out of the box he went 8.02, 8.01 and on a 8.00 index run he went 7.96. Like you I don't recommend the nitro much with 14:1 compression. It did seem to me with the engine set to run nitro you gained a tenth for every 10% you added. I found it to be a good tuning tool.

coker

[George]

George did you fatten it up at all? They say about 10 percent richer

Yes I did. But I will try it again soon. I got a few things figured out.