Got in contact with the shop the built the LT1 in the vette. She said she remember them putting in a mild cam and 40 over pistons. Any idea how much extra power this would result in? I believe a stock LT1 has 300 hp and 340 lbs trq. Maybe they will remember it more when I bring it to them.
.040" is nothing compared the the total bore of the cylinders - so I would say that you'll make the same, or maybe less. Specs on the cam?
2013 Cadillac ATS....¶▅c●▄███████||▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅||█~ ::~ :~ :►
2008 Chevy Malibu LT....▄██ ▲ █ █ ██▅▄▃▂
1986 Monte Carlo SS. ...███▲▲ █ █ ███████
1999 F250 SuperDuty...███████████████████►
1971 Monte Carlo SC ...◥☼▲⊙▲⊙▲⊙▲⊙▲⊙▲⊙▲⊙☼◤
karioth Wrote:Got in contact with the shop the built the LT1 in the vette. She said she remember them putting in a mild cam and 40 over pistons. Any idea how much extra power this would result in? I believe a stock LT1 has 300 hp and 340 lbs trq. Maybe they will remember it more when I bring it to them.
Your vette has an LT1 swap?
1987 Oldsmobile Cutlass 442
A lot of vettes had LT1's in them. I dont know what year his is, but the early 70's vettes had them.
2013 Cadillac ATS....¶▅c●▄███████||▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅||█~ ::~ :~ :►
2008 Chevy Malibu LT....▄██ ▲ █ █ ██▅▄▃▂
1986 Monte Carlo SS. ...███▲▲ █ █ ███████
1999 F250 SuperDuty...███████████████████►
1971 Monte Carlo SC ...◥☼▲⊙▲⊙▲⊙▲⊙▲⊙▲⊙▲⊙☼◤
Sorry, I hear "LT1" and I immediately think of the Gen II block that powered F&Y bodies, not the 71/72 LT-1 in a 'vette.
GM needs to not re-use engine codes. Wouldn't we all be confused if Honda released a "new" B series?
1987 Oldsmobile Cutlass 442
I was not aware there was more than one LT1. It is NOT the stock vette motor for a 77 (owner blew stock motor). It's a 5.7L LT1 (C4 motor i believe) with a 4 bolt main. I think the stock motor was the L48. Even with the carb running shitty it feels way stronger than 180hp.
karioth Wrote:I was not aware there was more than one LT1. It is NOT the stock vette motor for a 77 (owner blew stock motor). It's a 5.7L LT1 (C4 motor i believe) with a 4 bolt main. I think the stock motor was the L48. Even with the carb running shitty it feels way stronger than 180hp.
I WIN!
Why's it have a carb? If I were gonna swap...SPFI.
1987 Oldsmobile Cutlass 442
Is it a vortec style head? If you dont know, see if the intake bolts are angled, if they are, it is. ALso there will be a little saw-tooth type thing stamped on the end of the heads. I dont know crap about that carb except its a holley, so it sucks on gas hardcore, and it's probably a little small. I'd guess 225HP at the wheels if the cam is halfway decent, and the heads are vortec style - with decent size headers.
2013 Cadillac ATS....¶▅c●▄███████||▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅||█~ ::~ :~ :►
2008 Chevy Malibu LT....▄██ ▲ █ █ ██▅▄▃▂
1986 Monte Carlo SS. ...███▲▲ █ █ ███████
1999 F250 SuperDuty...███████████████████►
1971 Monte Carlo SC ...◥☼▲⊙▲⊙▲⊙▲⊙▲⊙▲⊙▲⊙☼◤
supposidely, when the car was running right, it was peeling tires in 3rd gear 8D ... and thats on a 4 speed.
rear differential ratio?
2013 Cadillac ATS....¶▅c●▄███████||▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅||█~ ::~ :~ :►
2008 Chevy Malibu LT....▄██ ▲ █ █ ██▅▄▃▂
1986 Monte Carlo SS. ...███▲▲ █ █ ███████
1999 F250 SuperDuty...███████████████████►
1971 Monte Carlo SC ...◥☼▲⊙▲⊙▲⊙▲⊙▲⊙▲⊙▲⊙☼◤
not sure, but pretty wide, a stock 77 tops out at 155 mph I think.
. Although on a V-8 ... if you ever wanted to replace the injectors, ouch that hurts! I still remember replacing the injectors on my 280Z ... $300 for six ! Oh btw here is the list of upgrades that I am aware of: