why are my headers glowing on my blower motor ??
we have a 355 sbc with a mega blower { the big one ]. it has 8.5 to 1 blower pistons, it is set at 3% under, it has two 750 holley Mech carbs,. timing is set at 20 then max at 34 total. IT DOES NOT HAVE A VACUUM LEAK. it holds 9psi of fuel pressure the whole way.it leaves great, but it never really pulls, it weighs about 2350 leaving at 4000 shifting at 6400 and at a idel it will start to make the headers glow,,its only running like 10.40 to not much better,, is it fuel ?? is it timing ? what is it ?? HELP