When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Hi Scott,
I am excited for the 427 and counting down the days until I get to drop it into my Corvette. I am hoping to surprise a few people with it. i do have questions:
what should I set my rev limiter at?
how much timing should I allow?
We recommend setting total timing to 34* at 3500 rpm. Initial at idle timing should fall between 13-16* around 900 rpm.
We always recommend setting the rev limiter at the rpm of peak horsepower, which is 6000 rpm on this 427.
You asked what his 383 made. I stated what a 383 could make.
The addition of it being an auto vs a manual will have more drivetrain loss.
So what are you getting at?
You made 33 more rwhp and 49 more rwtq on an engine 38 cubes bigger through a manual which is good for 1-2% less power loss.
Sounds good! Numbers don't always tell the story but power under the curve does. A table top torque curve does wonders. Your 383 wouldn't have held a candle to the 421. Now it makes 475rwhp with a set of AFR 220's.
Sorry man can't compare the two motors! It made power from idle to 6500 rpm. I've have driven my share of 383's and they don't compare bro'
Sounds good! Numbers don't always tell the story but power under the curve does. A table top torque curve does wonders. Your 383 wouldn't have held a candle to the 421. Now it makes 475rwhp with a set of AFR 220's.
Sorry man can't compare the two motors! It made power from idle to 6500 rpm. I've have driven my share of 383's and they don't compare bro'
Like I said you asked about 383 numbers. I gave my mild build 383 numbers. Hell I only spun that combo to 5200rpm due to a sketchy tune.
Just think if I really wound it out.
My 400 will out perform most builds here. Cubes arent everything now a days.
A 427 is capable of some great power but at a compromise in the NA form.
Like I said you asked about 383 numbers. I gave my mild build 383 numbers. Hell I only spun that combo to 5200rpm due to a sketchy tune.
Just think if I really wound it out.
My 400 will out perform most builds here. Cubes arent everything now a days.
A 427 is capable of some great power but at a compromise in the NA form.