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Larry, I bought the
short block from a friend I completely torn it down I used the pistons, rods,
and crank. I had the internal parts balanced and the pistons fly cut to
get compression down to 10.5 to 1. I had the crank with harmonic balancer
and flex plate spun balanced, that a lone cost me $300. I put all new
bearings in motor. I had to buy all new parts ,I went w/ a trick flow kit
from Summit it gives you alm. heads, hdy. roller cam, roller rockers arp head
bolts, gasket set, timing chain and more. Summit owns trick flow they are
just down the street from summit. It run good after I got it broke
in, the biggest problem I had with a 750 speed demon carb. that I went
with!! it ran very rich from the beginning. The mixture screws would
work the opposite way they should work!! As I turned them in the higher
the idle and vacuum would go!!! I called demon carb many times, after a
lot of work I finally put new jets in 2 numbers smaller all four of them and new
power valve!! mixture screws still work the same but now plugs are
tan or brown, they were very black!! I have what looks like a stock
radiator I had problems w/ it over heating this summer. I put in a 160
degree thermostat when I first started it, it stuck this summer I got up to 230
degrees w/ alm. heads (not good) I took it out and through it a
way!!! I took a old one and took the guts and spring out, so it is a
restrictor now. worked good the rest of summer until I went to car show in
Frankenmuth Michigan about 85 degrees and stop and go traffic it went back to
210 - 230 degrees!! I have to buy a alm. radiator this this winter, so now
as you can see the 400 SB is noted for over heating!! The good part is the
trick flow kit I bought is dyned for 465 horsepower, the car does run good
after I got carb. right and that's w/ a 3:08 non posi. if you have more
questions e-mail off list at [EMAIL PROTECTED]
hope this helps!! P.S. I finally got about 400 miles on
engine, its put away!!!!
Doug
66 Chevelle 406
SB
From: Larry Shouse [mailto:[EMAIL PROTECTED] Sent: Tuesday, November 01, 2005 8:44 AM To: The Chevelle Mailing List Subject: [Chevelle-list] 400 SB (changed from synthetic oil) Doug,
One of the engines my son is considering is
a 400 SB. Although I told him his 68 SS396 may be worth more with a 396 in it,
he says he's heard some good things about the 400 SB. In terms of performance
and reliability, can you share with us your experiences? Others on the list too
please.
Larry
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