sssr20det510 Posted July 27, 2012 Author Report Share Posted July 27, 2012 Yes this is not a DD engine it will run between 4500-7500 rpm's Still trying to figure out what cam to go with, it will be running a 38-38 webber a87 Closed chamber head with bigger z valves and ported to 1.5 intake ports. We might shave it down and shim the cam towers to make the combustion cc's smaller. I have decided to just leave the short block alone till the end of the season(unless it blows or starts smoking) then bore it to 89mm. Quote Link to comment
DISLEXICDIME Posted July 27, 2012 Report Share Posted July 27, 2012 I thought you couldnt run a 38/38 Quote Link to comment
sssr20det510 Posted July 27, 2012 Author Report Share Posted July 27, 2012 You can run any 2 barrel carb must have stock intake and no dual carbs Quote Link to comment
GreaseMonky Posted July 27, 2012 Report Share Posted July 27, 2012 We can run any two barrel as long as its on a stock intake and the adapter plate is no more then 1" Quote Link to comment
ggzilla Posted July 27, 2012 Report Share Posted July 27, 2012 Driven's answer is very good, except this part: taking a bone stock L20b in a '79 620 and simply increasing bore size will yield almost no measurable performance gain.Sure it will. Going 3 mm overbore will make a lot more power. You might be thinking of a typical clean-up overbore -- going 0.5 over will yield almost no measurable performance gain. Overbore adds up much faster than stroking the crank or increasing compression. For racing, do everything. For the street, do your best bangs for bucks. Quote Link to comment
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.