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a big thing to check is the lower a-arm mounting brackets. they have not so good welds holding them on. lets just say most of the frame guys were monday morning and friday afternoon production dudes. the brackets are strong, they just just break the welds and come off the frame, easily re-welded...

have you looked at the Dynomax Ultra-turbo flow muffs?? they flow better than Flowmaster, better sound (no popping), and are stainless. they look great and sound killer. i ran then on my car before i switched to sidepipes for the new motor. either way, you can order from Summit or Jegs and have...

take a real close look at your lower a-arm mounting bracket. they are notorious for breaking welds. both of mine were broken and the only thing holding the passenger side on was the tension from the washers. after removing the retaining bolts, it fell off the car. you may have snapped one of the...

i have been running 255/60-R15's on mine since i bought it in '98. they rubbed a little in the front at full turn, but the rims were not factory offset. with factory offset wheels they did not rub. most wheels are 4 5/8" offset, but the Vettes need 4" offset. you won't even come close in the...

go ahead and swap the rear end to 3.70 and put the 200R4 in later. the 200R4 is a much more friendly tranny than the 700R4. as mentioned install is direct fit, they are stronger, and the gear ratios are more suited to cars. the 700R4 was designed for light trucks. it has a deeper first gear to...

you don't want the lifter to bleed down. did you double check the lifter settings after installing the engine?? if not, it's easy to do. just get an old valve cover and cut the top out of it. then set it on the head, you won't be able to tighten it if it's a top bolt retaining head instead of...

i'm running 3.70:1 with my TH400 and love it! pretty much the same as what you have with a TH350 except for 1st and 2nd gear ratios are a little different.

your compression test is good, if you had a burnt valve the pressure would drop down to around 80 psi or less depending on how bad it was. also lower compression will burn more rich than high compression. there are so many variables to look at, cam timing per cylinder, carb settings, ingition...

after you rebuilt the motor did you put threaded or push in plugs for the oil passages in the rear of the block?? i have seen lots of guys that over cut the threads on the three holes and run the plug in to far and choke off oil supply to the cam.

you need a regular flathead screwdriver for the screws. your are right, counter clockwise is richer. count your turns and run the idle screws in until they LIGHTLY seat. you should be about equal on each side. then turn them out 1 turn. you will want to do the idle tuning with the engine hot, so...

sounds like you need open up your idle mixture screws a little to richen the idle circuit. that will fix your stumble, unless it from a bad accellerator pump. you can test the pump, remove the air cleaner and open the upper flapper by hand. with the engine off, look into the carb and manually...

i have them as part of my VB&P performance plus kit. they work very well. they lower the rear clearence a little but it is nothing to worry about unless you drive down dirt roads with lots of pot holes. the smart struts allow the strut and half-shaft to travel in parallel resulting in the tire...

how much money do you have to invest in speed?? how original do you want to keep the car?? most mods are reversible with no perminate damage as long as you keep the original parts. it can be made to turn low 10 second 1/4 mile runs if you have the cash.

if you cut new threads, snake a mini magnet around the bottom of the pan to clean out all the filings.

sounds like detonation to me. try higher grade gas and/or 2* less timing.

is it a lag or intermittent stumble off idle?? if it is a dead lag when you hit the throttle hard, it is lean on the idle circuit. to correct, you need to turn out the idle air screws a 1/4 turn at a time until it's gone. if it stumbles and coughs and sputters from idle to 1/2 throttle, you need...

i am running 600 HP to my stock IRS. no problems after four years on the street. i have the VB&P kit on mine, and it works very well. the problem mentioned, from your source, it the camber change thru the suspension travel. this is from uneven camber rod and halfshaft angles. the original design...

Jeff, sounds like your in-tank filter might be plugged or collapsed. another problem is your current fuel pump might be worn out. i've seen electric pumps chew up plastic impellers and loose the ability to pull fuel. mechanical is better for pulling, and electric is better for pushing fuel...

i am running a 600 hp 406 in my '77. i also use the stock fuel line into a high pressure high capacity mechanical pump. that runs into a by-pass type pressure regulator that dumps extra presure to the factory bypass/return line to the tank. by circulating the fuel, it keeps it cool so i dn't...

thanks for the kudos Alan. just doing my best to help fellow Vetters get the most from their cars. your system is great and i really enjoy my car with it. i've been considdering setting up a shop in Alaska and was curious if you guys offer parts outlet/dealships for your products and if you...