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A little history, When I got this 69 Road Runner it had a hurt 528 Hemi in it with the an F1 Procharger, and using an antique water meth system. It had a horrible tune on it, too much timing and way to lean. No wonder the Hemi was damaged. Three cylinders scored, broken rings, compression under...

I have been doing some research on the use of water meth. Anyone on here familiar with it?

I have been getting this new to me carb dialed in on my 505 stroker. Bought the carb used and rebuilt it. The carb is a Holley based custom built 950 by Pro Systems. It had 76 jets in the primary with 7.5 PV, 90 jets in the secondary with a PV plug. MY AFR's were showing mid 14's at half...

Just curious if carbs other than Holley style will work with boost? Edelbrock or even an old Thermoquad?

After the install of the air fuel ratio gauge I found the carb tune was way off. Too rich at idle, mid 11's, to rich at cruise, low 12's, and stupid lean when given the beans, mid to high 15's. How the carb is built is a puzzle. It does not have a Holley list number. Looks to be a custom built...

Been chasing down many issues on the new to me 69 RR, 528 Hemi with with a Procharger. This problem, the engine lays down after a few seconds of wot, like it drains the bowls and runs completely out of fuel. I experienced that, and do not not push it there again. Lean is bad. I have been...

Where is the best place to get the boost signal for the fuel pressure regulator?

My new to me 69 Roadrunner carb has a problem. The primary needle and seat is not holding back fuel, fuel dribbles out of the boosters at idle. Tried to lower the float and it just gets worse. Carb needs a rebuild, but that is not the problem, what could be a problem is the carb that's on the...

I put a used 670 SA on my 383. The car has a manual trans. Carb is rebuilt, clean inside and out, cleaned out all the passages. Carb is back to stock, jetted Pri 65, Sec 68, 31 squirter, Orange pump cam in #1 hole. Squared up the transition slots on both the primary and secondary sides. Set...

Is it really worth the cost and effort to swap out an Edelbrock RPM intake for a single plane intake like a Street Dominator with throttle body EFI? I currently have a 1" spacer under the TB on the Eddey RPM intake and it works very well. Hood wont close now. Running without the hood is super...

I put my 600CFM Holley, #80457-3, on the 383. The 383 is mildly built with a modest cam, long tube headers, Eddy Performer 383 intake, 1" open spacer. I was expecting it to be noticeably lacking in power compared to the Quick Fuel 750 I normally run on the 383. To my surprise it ran ran...

Is it a better intake than the factory 1972 cast iron spread bore intake thats on the engine now? Engine has iron heads, mild Erson cam, long tube headers, and 750 Pro Form DP.

My first experience with a TQ was on a 75 motor home engine I bought for rebuild last year. I rebuilt the TQ and put it on the 318 in a 49 Plymouth I was playing with last year. The Plymouth had a Holley 600 on it. The little Plymouth ran so well with that TQ I never put the Holley back on...

I bought a used Proform 750 double pumper with electric choke on CL. The seller said they could not get it to work right on a 350 chev, thought it might be too big, put a smaller carb on the 350 and it worked well. I took the carb apart, cleaned it up, flushed out the ports and passages, had to...

This was an impulse buy on my part one night. I have it on the car, and went for a drive. It does seem to improve off idle performance, and throttle response is a bit crisper than before. https://www.thompsonperformance.com/

The 78 440 motor home engine I picked up has a Thermoquad on it. I ran the engine before tear down and everything worked. So I decide to try the TQ on my 49 Plymouth with a 318. It has an EDDY intake that will accept a spread bore carb. It started and idled well actually, then the accelerator...

My car is a 4000# 72 Charger with a mild built 360, about 250 HP, 330 FT#, at the wheels. I have been fiddling with two different carbs, both Holleys, one a 670 Street Avenger, the other a 750 with vacuum secondaries. The engine likes to idle pretty rich in the mid to upper 12 AFR range. Both...

I am seriously considering switching to EFI. The prices have come way down. Choices are more than ever, and the newer all in one throttle body systems make install much easier. For $1250 I can get a Holley Sniper system with an inline fuel pump and all the hardware. Other brands like FiTech are...

Helping a friend with the install and start up of his 496 Stoker with Holley Terminator FI. This has been a several month long project that we have been working on. Yesterday was finally time to get it started. Which did not go well. The engine is fresh build that was on the dyno at the engine...